50 foot yacht fuel consumption

How Much Fuel Does a 50 Ft Boat Use? Uncovering the Truth

Owning a boat can be a dream come true for many, offering the opportunity to explore the open seas, enjoy water sports, or simply escape the hustle and bustle of everyday life. One essential detail when operating a boat, however, is knowing how much fuel it consumes. For those considering a 50-foot boat, understanding its fuel usage is crucial for proper planning and cost management. This comprehensive blog post will delve deep into the topic, discussing a variety of aspects relevant to fuel consumption in 50-foot boats, the factors affecting it, and methods to optimize it. Strap on your life vests, and let’s dive in!

Table of Contents

Fuel Consumption Basics

Before we dive into the details of a 50-foot boat’s fuel consumption, it’s essential to understand some basics about boat fuel consumption in general. Fuel consumption is typically measured in gallons per hour (GPH) or liters per hour (LPH), depending on the region.

Types of Boat Engines

Choice of boat engine is an important factor when considering fuel consumption. There are two main types of boat engines – inboard and outboard. Inboard engines are situated within the hull, while outboard engines are mounted outside the hull at the stern of the boat. Commonly, large boats, like a 50-foot boat, utilize inboard engines. It’s also worth noting that engines can either run on diesel or gasoline, with each having its own fuel consumption characteristics.

Average Fuel Consumption for a 50-Foot Boat

A boat’s fuel consumption depends on various factors, including engine type, speed, vessel size, and design. As a result, it’s difficult to generalize fuel consumption for all 50-foot boats. However, to provide an estimated range, we can assume the following average fuel consumption rates for 50-foot boats under varying conditions:

• 3-5 GPH at idle speed
• 10-25 GPH at cruising speed (typically around 20-30 knots)
• 20-60 GPH at high speeds (over 30 knots)

These are general estimates, and it’s crucial to consult your boat’s engine specifications and manuals for accurate information on your specific model.

Factors Affecting Fuel Consumption

Understanding the factors that affect a 50-foot boat’s fuel consumption can help boat owners manage their costs and make informed decisions on optimizing fuel usage.

One of the most significant factors in fuel consumption is the speed at which a boat is operating. As the boat’s speed increases, so does its fuel consumption. This is because as a boat accelerates, it creates larger waves, which leads to increased water resistance and requires more engine power to overcome.

2. Weight and Load

The boat’s weight and load also have a significant impact on fuel consumption. A heavily loaded boat requires more energy to push through the water, which means the engine has to work harder and consume more fuel. Always ensure that your vessel is loaded according to the manufacturer’s recommendations, and regularly check for water in the bilges or other unnecessary weight.

3. Engine Efficiency

The overall efficiency of the boat’s engine plays a crucial role in determining fuel consumption. Diesel engines usually provide better fuel efficiency than gasoline engines, and modern, advanced engines use fuel more efficiently than older models. Proper maintenance is vital to ensure optimal engine efficiency.

4. Hull Design and Condition

A boat’s hull design and condition can also influence fuel consumption rates. A clean, well-designed hull reduces water resistance and allows the boat to cut through the water more efficiently. Ensure that your boat’s hull is in good condition and free from fouling to improve its fuel efficiency.

Fuel Consumption Optimization Tips

Given the high costs associated with fuel, optimizing your 50-foot boat’s fuel consumption is essential. Here are some practical tips to help you conserve fuel and reduce your boating expenses:

1. Maintain Optimal Speed

Find the “sweet spot” between speed and fuel consumption by experimenting with different speeds to identify the optimal cruising speed in terms of fuel efficiency. Generally, non-planing hulls are most fuel-efficient at displacement speed, while planing hulls have a sweet spot between 25-35% below their maximum speed.

2. Regular Engine Maintenance

Ensure that your boat’s engine is regularly serviced and maintained in accordance with the manufacturer’s specifications. Changing oil and filters, inspecting spark plugs, and checking fuel lines can improve engine efficiency and decrease fuel consumption.

3. Keep the Hull Clean

A clean hull enhances the boat’s hydrodynamics and minimizes resistance, leading to better fuel efficiency. Regularly scrub the hull to remove algae or other growth to maintain your boat’s performance.

4. Trim the Boat

Proper boat trim balances the weight distribution and the angle of the hull to the water, reducing water resistance and improving fuel efficiency. Adjust your boat’s trim tabs or distribute weight evenly to achieve the optimal trim for your specific boat.

5. Use a GPS or Chartplotter

Using a GPS or chartplotter can help you plan your route, taking into account variables such as tides, currents, and predicted weather conditions. By optimizing your route, you can conserve fuel by avoiding areas with strong currents or adverse conditions.

Frequently Asked Questions

How much gas does a 40-foot boat use.

The amount of gas a 40-foot boat uses depends on various factors like engine size, boat design, and load. On average, a 40-foot boat with a single engine may burn between 20 and 50 gallons per hour at cruising speeds.

How many miles per gallon does a boat use?

The miles per gallon (MPG) of a boat varies depending on its size, engine, and other factors. Small boats may have an MPG of about 3-4, while larger boats can range from 1 to 2 MPG. Factors such as boat weight, engine efficiency, and wind conditions can significantly impact fuel consumption.

How do I calculate how much fuel I need for a boat trip?

To calculate the fuel needed for a boat trip, you’ll need to know your boat’s fuel consumption rate (gallons per hour or miles per gallon) and the total distance of the trip. Divide the total trip distance by your boat’s MPG to get the total fuel needed in gallons. Always carry extra fuel to account for unexpected conditions or delays.

How much fuel does a Marine use per hour?

‘Marine’ could refer to a type of inboard boat engine or a military marine. Assuming you’re asking about a marine engine, fuel consumption depends on factors such as engine size, boat design, and load. A small inboard marine engine can use between 3-6 gallons per hour, while a more powerful engine might use 10-20 gallons per hour at cruising speeds.

How much fuel does a 50 ft boat use on average?

The fuel consumption of a 50-foot boat depends on the engine size, boat design, and load. On average, a 50-foot boat may burn between 30 and 70 gallons per hour while cruising at a moderate speed. Faster speeds will use more fuel.

What is the most fuel-efficient type of boat?

The most fuel-efficient boats are usually lightweight and have a hull design optimized for minimal water resistance. Sailboats, catamarans, solar-powered boats, and smaller motorboats with fuel-efficient outboard engines tend to be more fuel-efficient compared to larger powerboats or yachts.

How can I improve my boat’s fuel efficiency?

To improve your boat’s fuel efficiency, you can: 1. Regularly maintain and service your engine. 2. Keep your boat’s hull clean to reduce drag. 3. Distribute weight evenly in the boat. 4. Use the right propeller for your boat and engine combination. 5. Avoid overloading your boat. 6. Trim your boat properly. 7. Plan your route to avoid unnecessary detours.

How do wind and sea conditions affect fuel consumption?

Wind and sea conditions can significantly impact your boat’s fuel consumption. Strong headwinds and rough sea conditions increase the resistance your boat encounters, causing the engine to work harder and consume more fuel. Conversely, tailwinds or calm waters can reduce fuel consumption by lowering resistance.

Do different types of fuel (diesel or gasoline) affect fuel consumption in boats?

Yes, the type of fuel used can affect fuel consumption in boats. Diesel engines tend to be more fuel-efficient than gasoline engines, especially at lower RPMs, but may have higher initial costs. Diesel also has a higher energy density than gasoline, which contributes to the improved fuel efficiency along with other factors like turbocharging and better engine thermal efficiency.

How do I estimate my boat’s fuel consumption when buying a used boat?

When purchasing a used boat, you can estimate fuel consumption by considering factors such as boat size, engine type and size, and typical cruising speed. To get a more accurate estimate, research similar boats with the same engine and check their fuel consumption ratings. Also, ask the seller about their experience with the boat’s fuel consumption. Keep in mind, however, that actual fuel consumption may vary depending on how well the boat and engine have been maintained.

• Recent Posts

• Addressing Common Stik Boat Problems: Expert Solutions and Tips - June 15, 2023
• Sea Hunt Boat Problems: Common Issues & Solutions Explored - June 15, 2023
• Rinker Boat Problems: Top Issues & Solutions for Owners - June 15, 2023

Related Posts:

Related Posts

How Long Before Outboard Spits Water

How Long Does it Take to Travel 50 Miles by Boat: A Comprehensive Guide

Does Boat Dry Weight Include Motor? Uncovering the Facts

How Much Fuel Does a Yacht Use? An In-Depth Analysis

When it comes to luxury and adventure on the high seas, yachts are the epitome of both. Whether you’re a yacht owner or dreaming of chartering one for your next vacation, understanding the fuel consumption of these majestic vessels is crucial. Fuel usage not only impacts the cost of your journey but also has environmental implications. In this article, we dive into the factors affecting yacht fuel consumption and provide insights to help you estimate how much fuel a yacht uses.

Understanding Yacht Fuel Consumption

Fuel consumption in yachts is influenced by several factors, including the yacht’s size, engine type, cruising speed, and conditions at sea. Here, we break down these elements to give you a clearer picture.

Yacht Size and Engine Type

Yachts come in various sizes, from smaller 40-foot models to massive 100-foot plus luxury liners. Generally, the larger the yacht, the more fuel it consumes. Engine type also plays a significant role. Traditional diesel engines are common, but newer models may feature more efficient or hybrid engines that can impact fuel usage.

Cruising Speed

Speed is a significant factor in fuel consumption. Higher speeds increase resistance in the water, requiring more power and, consequently, more fuel. Cruising at a yacht’s optimal speed, often referred to as the “hull speed,” can help maximize fuel efficiency.

Conditions at Sea

Sea conditions can also affect fuel consumption. Smooth, calm waters allow for more efficient travel, while rough seas can increase fuel use due to the additional power needed to maintain speed and stability.

Estimating Yacht Fuel Consumption

While it’s challenging to provide a one-size-fits-all answer due to the variables involved, we can offer some general guidelines. On average, a yacht might use between 20 to 100 gallons of fuel per hour. Smaller yachts, such as those around 40 feet, tend to be on the lower end of the scale, consuming about 20 to 40 gallons per hour. Larger vessels, which are over 100 feet, can consume significantly more, sometimes exceeding 100 gallons per hour, especially at higher speeds.

Example Calculations

Let’s look at an example. For a 70-foot yacht cruising at a moderate speed of 20 knots, fuel consumption could be around 50 gallons per hour. If you’re planning a 100-mile journey, at 20 knots, it would take you approximately 5 hours. This means the total fuel consumption for the trip could be around 250 gallons.

Tips for Reducing Fuel Consumption

• Cruise at Efficient Speeds: Find and maintain your yacht’s hull speed for optimal fuel efficiency.
• Regular Maintenance: Keep the engine and hull in top condition to reduce drag and ensure the engine runs efficiently.
• Plan Your Route: Opt for the most direct route and consider current sea conditions to minimize unnecessary fuel use.
• Lighten Your Load: Only carry what you need for your journey, as extra weight can increase fuel consumption.

Understanding and managing fuel consumption is crucial for any yacht owner or enthusiast. By considering the factors outlined above and implementing fuel-saving strategies, you can enjoy the luxury of yachting more sustainably and cost-effectively. Whether planning a short excursion or a long voyage, a careful consideration of fuel use will enhance your experience on the water.

Remember, every yacht is unique, and so is its fuel consumption. For specific figures, consult your yacht’s manual or speak with a marine professional who can provide insights tailored to your vessel. Enjoy your time at sea, and sail smartly!

Listing your boat with Yachtlify provides several unique benefits, including:

• List once, post on multiple platforms (Yachtlify.com, Facebook Marketplace, Instagram, and others).
• Schedule showings and sea trials with our calendar and reminders.
• View listing engagement analytics across platforms.
• eSign, state forms, and Coast Guard forms to manage closing documentation in once place.

The Real Cost of Buying & Owning a 50-Foot Yacht

A 50-foot yacht can be difficult to maneuver, especially in tight spaces and harsh weather, so you need to invest in proper training for yourself and your crew. You may also need to apply for special permits and licenses to operate in certain areas. These factors can add up quickly to the overall costs, so if you are determined to own a 50-foot yacht, here's the real cost of buying and owning one.

The total estimated upfront costs of buying a 50-foot yacht range from $458,000 to $692,000 and include the initial purchase price and other fees. There are also hidden costs that total $70,000–$300,000+ per year. For ongoing costs, the total estimated annual costs are $35,000–$85,000 per year.

Although costly, with proper budgeting, maintenance, and strategic planning, you can manage the costs of owning a yacht and still enjoy the lifestyle that comes with it. Let's look at some practical tips to help you manage the costs of owning a 50-foot yacht.

• A high-end luxury yacht may cost significantly more than a basic production yacht with standard features and finishes.
• A new yacht with low engine hours and minimal wear and tear may command a higher price than an older yacht.
• Hiring a surveyor can help you save money in the long run by identifying any potential problems before you purchase the yacht.
• Fuel costs can add up quickly, since a 50-foot yacht with twin diesel engines uses almost 20–30 gallons of fuel per hour.
• Winter storage can protect your yacht from the elements, and it can also add up to the overall cost of owning a yacht.

On this page:

Cost of buying & owning a 50-foot yacht, upfront costs of buying a 50-foot yacht, hidden costs of owning a 50-foot yacht, ongoing costs of owning a 50-foot yacht, tips for managing the costs of owning a 50-foot yacht.

When buying a 50-foot yacht, there are several costs to consider, such as upfront costs, hidden costs, and ongoing costs per year. Here's a rundown on the all-in cost:

In this section, we will break down these costs into sub-sections to give you a better idea of what you can expect.

The purchase price of a 50-foot yacht varies depending on the model

Different models of yachts may have different features, amenities, and capabilities, which can affect their value and appeal to buyers . A high-end luxury yacht with state-of-the-art technology, custom finishes, and top-of-the-line appliances may cost significantly more than a basic production yacht with standard features and finishes.

Similarly, a newer yacht with low engine hours and minimal wear and tear may command a higher price than an older yacht with more use and maintenance requirements. Yachts located in popular boating destinations or areas with high demand may be priced higher than those in less desirable locations.

Here are some examples of different yacht models, their amenities, and estimated prices:

Sales tax and registration fees

When you purchase a yacht, you will need to pay sales tax and registration fees. In some states, you may be able to avoid paying sales tax if you purchase the yacht in a different state and keep it there.

In Florida, the sales tax rate is 6% , but there is a cap of $18,000 on the amount of tax you will pay. So if you purchase a yacht for $500,000, you will only pay $18,000 in sales tax.

On the other hand, registration fees are the fees you need to pay to register your yacht with the state where you plan to operate it. The fees are typically used to fund marine programs, such as boating safety education, law enforcement, and conservation efforts.

Some states charge a flat fee, while others charge based on the length of the yacht. In some cases, the registration fees may also be based on the age or value of the yacht. These fees are typically renewed annually, and failure to renew your registration can result in penalties or fines.

Registration fees in Florida for a yacht over 110 feet in length can be as high as $4,000 per year. However, for a yacht under 16 feet in length, the registration fee is only $5 per year.

Survey and inspection costs

A survey and inspection is essentially a thorough examination of the yacht by a professional surveyor. The surveyor will inspect the vessel from top to bottom, looking for any issues or potential problems that could affect the yacht's seaworthiness or value. This includes checking the hull, deck, rigging, electrical systems, plumbing, and more.

For smaller yachts, the cost may be a few hundred dollars, while larger and more complex yachts could cost several thousand dollars.

By identifying any potential problems before you purchase the yacht, you can negotiate with the seller or even decide not to purchase the yacht altogether. In the long run, this can save you money and help ensure that you're making a sound investment.

Insurance and financing costs

Insurance rates can vary widely, but you can expect to pay a premium for coverage. The higher the value of the yacht, the higher the insurance premium will be.

As for financing, the interest rates for yacht loans are typically higher than those for home or car loans. This is because yachts are considered luxury items and are often seen as a higher-risk investment. The interest rate you'll be offered will depend on your credit score, income, and the amount of the loan you're seeking.

Aside from the upfront costs, there are also hidden costs beyond the initial purchase price. Here are some hidden costs you should be aware of:

Environmental and regulatory compliance

Owning a yacht also comes with environmental and regulatory compliance costs. You may need to pay for permits to dock your yacht in certain areas, or you may need to invest in equipment to comply with environmental regulations. These costs can add up quickly and may not be immediately apparent when you're considering purchasing a yacht.

Crew and staffing costs

If you plan to use your yacht frequently, you'll likely need to hire a crew to help you maintain and operate it. Crew and staffing costs can include salaries, benefits, and insurance, and can be a significant expense over time. Additionally, you may need to pay for crew training and certification , which can add to the overall cost of owning a yacht.

If you're looking for paid courses for your crew, here are 9 best sailing courses you might want to check out.

Costs of upgrades and customizations

While a 50-foot yacht may come equipped with many standard features, you may want to add additional amenities or customize the interior to your liking. These upgrades can be expensive and may not be covered by your initial purchase price.

Upgrades and customizations can range from relatively minor changes such as adding a new sound system or upgrading the navigation equipment, to more extensive modifications such as adding a new deck or completely redesigning the interior of the yacht. The cost of these upgrades will be based on the extent of the modifications and the materials and labor involved.

In this section, we will discuss the ongoing costs of owning a 50-foot yacht.

Maintenance and repair costs

Regular maintenance helps keep your yacht in good condition and prevents costly repairs. Some common maintenance and repair costs include:

• Engine maintenance
• Hull cleaning and painting
• Electrical and plumbing repairs
• Sail and rigging repairs: ( Here's an article on the cost of replacing a standing rigging )
• Interior and exterior cleaning

Docking and storage fees

Some common docking and storage fees include:

• Monthly slip rental fees: These fees cover the cost of renting a slip at a marina or dock for your yacht to be moored. Slip rental fees can range from a few hundred to several thousand dollars per month.
• Winter storage fees: During the off-season, many yacht owners choose to store their vessels on land to protect them from the elements. The cost of winter storage can range from a few hundred to several thousand dollars per season.
• Launch and haul-out fees: These fees cover the cost of launching your yacht into the water and hauling it out for maintenance or storage, and vary based on the location and the size of your yacht.
• Electricity and water fees: Many marinas charge additional fees for the use of electricity and water while your yacht is in the slip.

Fuel and operating costs

A 50-foot yacht typically has twin engines, which can be either gasoline or diesel. Diesel engines are generally more fuel-efficient and have a longer lifespan than gasoline engines, but they are also more expensive to purchase and maintain.

On average, a 50-foot yacht with twin diesel engines will use about 20-30 gallons of fuel per hour, while a gasoline-powered yacht will use about 40-50 gallons per hour.

Routine maintenance such as oil changes, filter replacements, and hull cleaning is part of the overall operating costs and will cost several thousand dollars per year. More significant repairs or upgrades, such as engine overhauls or electronics replacements, can cost tens of thousands of dollars.

Costs for insurance and maintenance reserves

Insurance can protect you from liability and damage to your yacht, while maintenance reserves can help cover unexpected repairs. Some common insurance and maintenance reserve costs include:

• Liability insurance
• Hull and machinery insurance
• Personal property insurance
• Emergency repairs and reserves

Here are some tips to help you manage the costs of owning a 50-foot yacht:

Create a budget and stick to it

Your budget should include all of the costs associated with owning and maintaining your yacht, including mooring fees, insurance, fuel, maintenance, and repairs. Try to plan for unexpected costs, such as emergency repairs or unexpected upgrades.

You should also plan ahead for seasonal expenses, such as winterizing your yacht when the boating season is over . By creating a budget and planning ahead, you can avoid surprises and ensure that you have the funds necessary to keep your yacht in top condition.

Do the basic maintenance and repairs by yourself

While there are some tasks that require a professional, such as engine repairs or electrical work, there are many things you can do yourself with a little knowledge and the right tools.

By doing your own maintenance and repairs, you can save money on labor costs and ensure that your yacht is always in top condition. You can also take pride in knowing that you are taking care of your investment and keeping it in great shape.

Consider sharing and chartering options

If you don't use your yacht all the time, you may want to consider sharing or chartering options as a way to offset the costs of ownership. Sharing your yacht with friends or family members can help split the costs of maintenance and repairs while chartering your yacht to others can help generate income.

There are many websites and companies that specialize in yacht sharing and chartering where you can find an option that works best for you. Just be sure to carefully vet anyone who will be using your yacht to ensure that they are responsible and will take good care of your investment.

Learn some selling and trading strategies

If you find that the costs of owning a 50-foot yacht are too high or you are ready to move on to something else, you may want to consider selling or trading your yacht. There are many strategies you can use to get the best price for your yacht, including working with a broker, advertising online, or attending boat shows.

If you are interested in trading your yacht for something else, perhaps carefully consider your options and work with a reputable dealer. By using these strategies, you can ensure that you get the best value for your investment and can move on to your next adventure with confidence.

Leave a comment

You may also like, cost of buying & owning a small yacht (detailed breakdown).

While some people may prioritize a slower, more eco-friendly, and more hands-on experience that they get from a sailing yacht, others may prefer a faster, more …

The Average Cost of Owning a Boat in Florida (4 Examples)

Average Cost of Buying & Owning a Catamaran (With 4 Examples)

2023 Cost Of Mediterranean Yacht (As Seen On Below Deck)

Average Cost of Buying & Owning a Yacht in Dubai (2023)

Boat Fuel Consumption List

The fuel consumption of any yacht, can vary widely based on several factors including the yacht's size, engine type, cruising speed, and conditions under which it is operated.

The figures above are average calculated.

Boat Fuel Cost Calculator

Data Policies

Social media, yachts zenith nautic s.l.

VAT Number: B56880875

Welcome to the West Nautical Fuel Calculator

HOW TO USE:

To plot points on the map, click with your mouse - this will automatically update the distance table. Then enter the speed, fuel consumption, and fuel cost to determine the total cost of the trip.

Example 1: A fast 30m yacht cruising at 20 knots ( Lady Amanda ) will consume roughly 400-500 l/hour (more depending on engine type).

Exampe 2: A typical displacement yacht may cruise at 12 knots and consume 300 l/hour

Example 3: Some yachts can cruise at 10 knots ( Firefly ) and consume 100 l/hour

Example 4: A sailing catamaran can cruise at 8 knots and consume around 35 l/hour

Fuel prices can fluctuate, but typically fuel is between €0.8 - €2.2 per litre.

Get in touch with one of our client managers for a more accurate fuel distance calculation.

• 0 Fuel Consumed (L)
• 0 Total Cost

• Search forums
• Motor Boat Forum

Average fuel burn rate on different size boats..

• Thread starter wipe_out
• Start date 5 Jun 2013

Active member

As you do I am looking at bigger boats.. Obviously one of the major factors is how much fuel it will burn but this also seems to be the hardest information to find.. Even finding "average" numbers for say 35ft, 40ft, 45ft, 50ft..... boats is proving problematic.. I know there are the calculated consumption methods of xx litres per HP but then you need to know how many HP are being used to maintain say 20kn.. So lets say you were looking at flybridge cruisers and wanted to get some idea of how much fuel they would burn at 20kn how would you go about finding the information so you could make a comparison and evaluation?  

epervier said: This reminds me of the old RollsRoyce reply, if sir has to ask how much, sir can't afford it Click to expand...

Didn't jfm say in his new Match build thread that he was hoping his new Sq 78 had better fuel consumption than the old one and would burn less than 20 gallons a minute at 20 knots? Or did I just make that up?  

Divemaster1

Well-known member.

I think more importantly you need to look at your planned use area etc., and determine how long the "average" journey will be. Then asess how long you will spend at 20 knot during these journeys.... Speed = £££ and size combined with speed = £££££££ Very few leisure boats will spend much above 2 hrs (on average) in the 20 knot area, but I know that from often running a heavy 45 foot boat for 4 hrs plus in this range, you will not get much spare for 90 - 110 litres per hour.... However, our average hourly consumption is significantly less than that as our average speed, to and from marina, in amongst other boats etc., means our speed and thus engine load drops big way. So advise would be to look at how you would use the boat, area to cruise in and assess if you really need those 20 knot as cruise when you have a bigger boat to enjoy the journey in...  

superheat6k

Ths is a thoroughly debated coconut with a similar answer to the length of a piece of string ! In very rough terms, and I now expect to be shot thoroughly, for budgeting and planing at 20 knots ... 30' 2-2.5 mpg 35' 1.5 - 2 mpg 40' 1 - 1.5 mpg Most owners will likely and optimistically suggest their boat is far better than this, whilst wincing as they fill the thing up. This is Loa excluding swim platforms, which most boats now count in the declared length, which is akin to including the flap in the end of a durex as a valid part of your manhood dimensions, but then I guess for many of us our boats are just penis extensions, that's what SWMBO thinks anyway. Drive type and qty of shafts, engine size and type and driving style, not to mention persons aboard and tank levels, inventory / unnecessary rubbish levels will all have an affect. Then there's sea state, wind direction, tidal flows. If you think about it too hard you will conclude in short order that the non obsessed would never own a boat, especially a planing power boat, but that's where common sense and boat ownership part company !  

I think that the weight of the boat gives a good clue, my boats so far using weights from the boat lift gave the results below, on calm seas. Gets rough you use more sealine 410, length 42 feet, weight @ 10 tonnes with 71Bs did @ 1.1mpg @ 20kns ish targa 43 length 45 feet, weight @ 9 tonnes with 63Ps did @ 1.2mpg @ 20kns sealine t50 length 50 feet, weight 18 tonnes with D9s does 0.65mpg at 22kns so a crude rule of thumb is to compare weight and length to give an indication of what a future purchase might do to the wallet.  

another method i have used is to take the estimates from MBYs tests and make them 10% worse. On the boats I have owned that Mr Marsh has tested this seems to work quite well too. I guess test boats are effectively stripped bare and light on fuel to keep the weight down and the mpg up.  

essex boat yards have a sealine t46 for sale at a very good price -loads of room and not bad mpg  

There is, of course, an element of choice in cruising speed. We were on the NYA cruise in company last week (an excellent week but that is another story) and did several sections of the sea passages at 7-8 knots. Our boat is very comfortable and whilst fuel consumption was a significant consideration when we bought her we concluded that our sea trips wouldn't always require 18-20 know cruising but it is good to have the choice (so displacement boats were not a consideration).  

That's where I am as well.. Full displacement gives you no choice of speed where planing hull maybe a little less efficient at displacement speed it had the option of going faster.. I know I will run at different speeds depending on many factors like who is on board, the weather and what I feel like but just chose 20kn as the reference for side by side comparison.. Out of interest do bigger boats come onto a plane a lower speed or are they all about the same?  

bigger boats plane properly at slightly higher speeds - but not much more. re- planing boat at displacement speeds, I think the economy is very similar to displacement boats at these speeds as planing boats weigh quite a bit less. another thing to think about is that the longer the waterline length of a boat the faster its displacement mode speed is.  

Members online

• usernamesteve
• CrossedThreads
• reallycoliholic
• wingcommander
• Richborough
• Sticky Fingers
• Buck Turgidson
• RogerFoxTerrier
• TK Blue MAX
• double_ender
• Wandering Star
• jasperthedog
• WildGoldfish
• Seashoreman

Share this page

Log in or Sign up

You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser .

Fuel Consumption of Larger Yachts

Discussion in ' Boat Design ' started by Slimjim , Sep 14, 2012 .

Slimjim New Member

Hi to all and thanks from a lurker. I'm thinking of getting a larger motoryacht to live aboard,as the values of the 10-15 year old yachts have really dropped with the meltdown and what not. I have ocean front property,so docking is no problem. I have looked and emailed brokers,but can't find any info on consumption at lower speeds-it's not so much the amount as we will use it rarely- just need to know what kind of range I may expect for a 75-85' yacht like a Sunseeker. Any hints will help and thanks again. Jim  

WestVanHan Not a Senior Member

Hi slim and welcome to the board. I've had those thoughts lately too..the prices have dropped,and any on the market have been so for years..so the owners need to get realistic. I have a small oceanfront cabin up the coast-but docking in front of it is not a good thing and as you know docking anywhere near Vancouver for something that big is very hard and $$$$$. Otherwise I'd be so tempted. Anyways,I was on a charter Sunseeker 84 Manhattan. Almost all of them came with the 1400hp Cat 3412-which is not a too desirable state of affairs. If they've been used to any of the hp potential they tend to have problem$$. Or when..and I mean "when" not "if" one of them drops a valve,a liner fails,a skirt breaks,or the aftercooler leaks and breaks your pistons-pull it out and throw in a reman Cummins QSB11 as the main driver. Anyways I remember at 10 knots/1000 rpm both engines/ it was 90 litres an hour. I don't see why not at 7-8 knots, you'd be down to 50-60 litres an hour. You'd want to open them up a couple minutes every hour. At 22 knots it's 400+ litres an hour. Look into Fairline,Princess/Viking-the Italian boats seem to be more expensive.  

TANSL Senior Member

Search with Google catalogs of engine manufacturer. They indicate consumption, generally, in grams / hp-hour. (about 200 gr/hp-h) They do not say that consumption occurs under ideal navigation conditions, with the engine at 80%, but is data that can be used with caution. See attached example.  

Attached Files:

Yamaha FL250AETU.doc

Trying to be helpful tansl, but without knowing how much hp it takes to move the yacht at a speed-charts and specs are useless.  

WestVanHan said: ↑ Trying to be helpful tansl, but without knowing how much hp it takes to move the yacht at a speed-charts and specs are useless. Click to expand...

Tad Boat Designer

Princess V72 C32 Cats 1000 RPM = 11.3 knots and 40gph = range of 295 miles Sunseeker 70 1550 HP MANs 1000 RPM =10 knots and 23gph = 500 miles range 1250 RPM = 11 knots and 42.5gph = 300 miles range 1500 RPM = 18.3 knots and 51gph = 399 miles range (best mpg) Those are US gallons  

Squidly-Diddly Senior Member

not to thread jack, but how about two engines on one shaft, so..... you aren't lugging a big diesel at lower speed, but still got full power with both engines running. Ideally, I'd have 6 and 12 cyl engines, so I'd have 3 possible power levels....6, 12 or 18 cyls.  

mydauphin Senior Member

If you have to ask... You cant afford it. Owning a big yacht is not about fuel, everything else is expensive too. Keep it below 50' and you will save tons of money.  

mydauphin said: ↑ If you have to ask... You cant afford it. Owning a big yacht is not about fuel, everything else is expensive too. Keep it below 50' and you will save tons of money. Click to expand...

TANSL said: ↑ Well, you tell me how you will meet the consumption?. Or do you think that yachts consume according to their length? B.R. Click to expand...

OK WestVanHan, sorry if I said something wrong but I do not understand why we can not use information that the engine manufacturer provides. Cautiously or wrongly, is often the best information we can provide. On the other hand, you're right, not only are the main engines that consume fuel, we must take into account all other consumers of fuel in the boat. So I think that neither yours nor my data can answer this question. Finding a yacht consumption, and therefore its autonomy, is quite complicated. But. if the manufacturer gives us a data, why not use it? It's not that I try to help but not answering the question. It is, in my opinion, that if we do not use data as I propose is very difficult to estimate the consumption / autonomy of a ship, with rigor.  

TANSL said: ↑ So I think that neither yours nor my data can answer this question. Click to expand...

Jim; forgot to mention there's been a Sunseeker 94 docked here in Vancouver for 12-13 years.I know it had very very rarely been away from the dock up to 2009. I walked and biked past it almost every day. And the last 4 years AFAIK it' hasn't been away much either,I'd guess for haulouts or runs. It was on the market continuously until a couple years ago-but I'd guess they still think it's worth the $4M they were asking for it in 2001. Oh and the tankage on the 84 was 7500 or so..so at 10 knts you should go ~850 miles to empty-more than enough to circumnav. the Island and spend a year parked in the Broken Group if you wanted.  

FAST FRED Senior Member

"not to thread jack, but how about two engines on one shaft, so..... you aren't lugging a big diesel at lower speed, but still got full power with both engines running." Ideally, I'd have 6 and 12 cyl engines, so I'd have 3 possible power levels....6, 12 or 18 cyls. " The past 40 years or so the US Navy has been installing two engines tied to a gear box and single shaft on landing craft. My preference would be for a smallish diesel to operate efficiently at 80% power 90% rated RPM for long range cruising, and a stock motor for the times to make a big wake and de-fuel the boat rapidly. 3-71 and 6-71 or 80Hp Deere tractor with Intl DT 466 ,,more Modern , might use less fuel Engine can be disconnected under way , but requires shut down to engage to reengage either engine. No big deal.  

• Advertisement:

FAST FRED said: ↑ "not to thread jack, but how about two engines on one shaft, so..... you aren't lugging a big diesel at lower speed, but still got full power with both engines running." Ideally, I'd have 6 and 12 cyl engines, so I'd have 3 possible power levels....6, 12 or 18 cyls. " The past 40 years or so the US Navy has been installing two engines tied to a gear box and single shaft on landing craft. My preference would be for a smallish diesel to operate efficiently at 80% power 90% rated RPM for long range cruising, and a stock motor for the times to make a big wake and de-fuel the boat rapidly. 3-71 and 6-71 or 80Hp Deere tractor with Intl DT 466 ,,more Modern , might use less fuel Engine can be disconnected under way , but requires shut down to engage to reengage either engine. No big deal. Click to expand...

Fuel consumption opinions

Fuel tank location

1977 Starcraft American 16 fuel tank

Fuel efficiency index

rearranging fuel tanks reduce stern weight

Help Needed with stringer mods to fit Underfloor fuel tank

Reality Check Please- Fuel Tank

Digital fuel metering

Convert No-EPA fuel tank to EPA

Fuel vent posizion and ce/iso rules.

• No, create an account now.
• Yes, my password is:
• Forgot your password?

• Charter & Brokerage
• Yacht Design & New Builds
• Tenders & Toys
• Superyacht Events Calendar
• Career & Training
• Departments
• Superyacht Crew Finances
• Sustainability
• Shipyards and Marinas
• Health & Wellbeing
• Polar Region
• Our Services
• Meet the Team

Yachts And Fuel – How Much Do They Really Consume?

Fuel is one of many annual running costs of a yacht. Not only does the yacht need fuel for cruising; the generators require it to keep the vessel running while at anchor and underway. As well as this, many of the water sports toys require it too.

Some yachts cross the Atlantic Ocean twice a year between the Mediterranean and Caribbean while others embark on world cruises. That equates to a lot of fuel.

So How Much Do They Really Consume?

According to the Yachting Pages, the longest Superyacht in the world, 180m M/Y Azzam, holds 1,000,000 litres of fuel. To put it into perspective, that is the equivalent of filling a regular hatchback car 23,800 times. Or, six Boeing 747 commercial airliners.

West Nautical’s Vessel Manager, Tony Hildrew, a former Yacht Chief Engineer said:

“Fuel is the single biggest expense when it comes to yacht operations, it is estimated that the global spend on fuel is around $150bn annually however this shouldn’t put you off, there are a number of ways to ensure your fuel consumption doesn’t get out of hand. Implementing a Ships Energy Efficiency Management Plan or SEEMP for short is a great way to keep fuel costs down without compromising on your cruising experience.”

Each yacht will consume fuel differently for a number of reasons. It could be the size and make of the engines. Or, how often the yacht is using generators. As well as the number of tenders and water sports toys on board that require fuel. For example, if the yacht is out at anchor and running on generators 90% of the time, the fuel consumption will be much higher than a yacht that is in a marina at night and connected to shore power and water.

Another factor that will affect fuel consumption is the yacht’s itinerary. This is because the sea conditions will impact how much fuel the engines consume.

How Is Consumption Measured?

You will be able to input the start and ending points of your cruise on the map. This will automatically update the distance table. The next step is to enter the speed, fuel consumption and cost of fuel per litre to determine the cost of the trip.

Here is an example: A fast 30m yacht cruising at 20 knots will consume roughly 400 – 500 litres depending on the engine type. This would equate to the total consumption of 2500 litres for a distance of 100 nautical miles.

Another example is, a 70m yacht looking to travel 100 nautical miles with the engines burning 1000 litres per hour would add up to a total consumption of 8335L for that passage. Depending on where the yacht bunkered, the estimated cost with the price per litre being on the low end at €0.90 per litre would cost a total of €7501.50. An example of a 100 nautical mile passage would take you from Saint Tropez to The North Coast of Corsica.

How Much Does It Cost?

Fuel prices fluctuate depending on which country you bunker in and some places you bunker offer tax free fuel such a Gibraltar and Montenegro. Fuel prices can vary but typically costs between €0.80 and €1.30 per litre.

Yacht charter, sales and management company West Nautical added:

“Fuel costs should be at the top of any yacht owner and captain’s minds for two reasons: to minimise costs as well as reduce the environmental impact of burning unnecessary fuel. The superyacht charter market, more than most other markets, relies on pristine waters for their guests to enjoy their holiday. If the oceans in popular charter destinations are not maintained, it will decrease the demand for yacht charter and therefore the revenue for owners.” “If you are looking for expertise in operational management and engineering in order to plan a SEEMP, West Nautical would be delighted to assist.”

About West Nautical

West Nautical sell, charter and manage superyachts from their head office in Newcastle upon Tyne. The business currently employs a team of 21 staff throughout their offices based in the UK, Russia, France and Cyprus.

  Since their inception over 25 years ago, West Nautical have become recognised as one of the most respected, trusted, knowledgeable and accountable professional services firms in yachting – largely due to their relentless determination to act in our clients’ best interests. Their approach and attitude is transparent, refreshing and focused on providing value-added services delivered simply, elegantly and affordably. 

Visit West Nautical’s website here: https://westnautical.com

For Media enquiries please contact  sarah.mackenzie@westnautical.com

To keep up to date with the latest Superyacht Content News, click here .

Sign up to our Newsletter below:

Newsletter Signup

• Your Name First Last
• Your Email *

West Nautical

Related articles, lithium-ion battery safety on superyachts & the urgent need for industry awareness, know your ship how helideck pop-up foam firefighting systems work, scorpion tenders from twisted marine. setting world class standards, navigating busy season: crew wellness tips with superyacht fitness & emma from seas the mind.

Superyacht Content

Social media influencer and digital brand expert.

Superyacht Content brings you the latest in social news for the superyacht industry.

Keep up to date with us across our social channels, and don’t forget to hit that share button!

• Superyacht News
• Superyacht Jobs
• Superyacht Marketing

Join our Newsletter

Copyright © 2023 Superyacht Content | Website Design by Zonkey

Privacy | Credits | Get in Touch

Do you operate a yacht? Our app is perfect for you

Yacht fuel cost calculator - how to estimate the costs.

Yacht captains have many responsibilities when it comes to the management of their vessel. One of them is keeping track of expenses, which is why it is important to familiarize yourself with the vessel’s operational costs. Keeping a luxury superyacht afloat isn’t cheap, and many claim that the average annual cost ranks up to 10% of the vessel’s price.

From these expenses, a significant portion goes to fuel. Filling up the tank of your boat is quite pricey, which is why a growing number of boat owners want to know exactly how much they are looking to spend for their upcoming voyage. This is also important for people who want to charter a boat for their holiday.

If you’re wondering how to best estimate the costs involved, you’re in the right place. This article will help you calculate your vessel’s yacht fuel cost while giving an overview of all the criteria used as variables. To make the process even easier, we link to a yacht fuel cost calculator to help you get an indication of the expenses you’ll need to cover. Let’s delve in!

Yacht fuel cost calculator

How to estimate yacht fuel costs, how much fuel does a yacht use.

• Price of boat fuel per gallon?

Yacht fuel formula

The easiest way to calculate your fuel costs is by using a yacht fuel cost calculator. There is a great calculator available here in case you want to save time and get an approximate estimation.

As you can see, the yacht fuel cost calculator has many variables which you need to be aware of before you set out to calculate the approximate price. This is what we will be dealing with in the next few chapters.

To help you get a better understanding of the calculation process we will do things manually while giving you the exact formulas used to calculate your vessel’s fuel needs. Therefore, make sure you keep on reading.

There are several things you need to keep in mind when you first set out to estimate the total fuel cost for your next voyage. These are summarised in the following points:

• Distance of journey - The total amount of nautical miles (or km)
• Cruising speed - The (average) speed of your vessel (in knots or km/hr)
• Fuel consumption - Understanding how many gallons (or liters) of fuel are consumed per hour
• Yacht fuel price - Understanding the average market price per gallon of fuel

The first two points depend solely on your needs and personal preference, which means that they are more flexible on a subjective basis. The latter two points may require a bit of research, especially if you’re not familiar with the engine of the vessel.

In the following sections, we will delve deeper into each of the points mentioned above, and offer the required formulas to help you calculate yacht fuel cost.

Calculating distance and speed

To understand the exact distance you are looking to cover in your next voyage, you can simply use Google Maps to plan your route. The following video explains the process in detail.

As soon as your route is planned out, you can measure the distance as well, selecting the preferred method of calculation. In our case, it is best to measure in nautical miles (1nm=1,85km), as this metric is more commonly used among sea men. The yacht fuel cost calculator above has an embedded map that helps you pinpoint the journey you want to make.

Next comes the cruising speed. The number is mostly calculated in knots (nautical miles/hr). The speed with which the vessel will cruise depends on the captain onboard, but is often influenced by the owner and guests onboard. You can make a rough estimation of this number based on previous trips.

Next, we need to calculate the amount of fuel that you will likely need. To do this we need to understand the engine type, its horsepower, and several other factors.

Let’s take a marine diesel engine for example. These engines are very common on motor yachts and consume approximately 0.4 pounds of fuel per hour for each unit of horsepower. You can find fuel consumption info for your specific engine by looking it up on the web or by calling the service number.

Once you know the fuel burn rate, it’s best to add a relative error margin of 10% based on minor factors. These include weather conditions, vessel size, and drag, all of which can increase the fuel burn.

How much fuel does a yacht use per hour?

Now that you know all the variables you can go ahead and calculate the amount of fuel that your yacht will need.

• Start by calculating the fuel burn per hour based on the horsepower of the engine.
• Add a multiplier based on the cruising speed of your vessel.

A vessel with a diesel engine of 300 horsepower will most likely burn 16-17 gallons per hour, which you can then use as a guideline when calculating the travel time based on the nautical miles you are looking to cover.

Superyachts are consuming much more fuel. An average 70-meter luxury yacht will burn around 130 gallons per hour with the engines running, while the amount increases significantly when the ship is moving. On average, you are looking at ±€2000 per hour (±1000 gallons) to achieve a speed of 20 knots. Of course, the higher the cruising speed, the more fuel you will be burning per hour, which in turn makes each hour at sea more expensive.

How much does boat fuel cost per gallon?

The exact price you are looking to pay per gallon depends on the marina you find yourself in. By looking at several price points of marinas, we get the following:

• Average diesel prices range from $3.2-$3.9 per gallon
• Average petrol prices range from $7.2-$7.8 per gallon

Note that discounts usually apply whenever you choose to purchase large quantities of fuel.

Why is boat fuel so expensive?

Marine fuel pricing is heavily inflated due to low supply and high demand. In short, the limited number of fuel stations at marinas have to service all the yachts that dock, which leads to a no-choice monopoly.

That said, yacht owners are usually not that concerned about the small price spike that marinas charge as an extra. If anything, they are happy to pay due to the convenience of the service.

How much fuel does a yacht hold?

Once again, the answer to this question depends on the size of the vessel. Smaller yachts can hold around 1300 gallons of fuel, while the bigger vessels can store up to 100,000 gallons. The ship’s engineers should be able to provide this number for the vessel you command.

Now that we have a better understanding of all the variables that determine the cost of fuel, we can go ahead and take you through the calculation process step by step.

First, know the total duration of your cruise. To obtain this information, divide the number of nautical miles by the cruising speed of your vessel (knots). For example, if you want to make a journey that totals 150 nautical miles while traveling at 20 knots, the yacht fuel formula looks as follows:

Total duration = 150 nm / 20kn

Total duration = 7,5 hrs

Note that the amount of fuel consumption may end up higher than expected if:

• Sea and weather conditions are not favourable
• You plan to make short stops along the way while the engine keeps running

Next, what you want to do multiply the number of hours by the number of gallons that your engine burns on an hourly basis while moving at the speed you previously indicated. If we take, as an example, the superyacht mentioned in the previous examples, we would make the calculation as follows:

7,5 hrs x 1000 gph = 7500 gallons

Now assume that you will also make two stops along the way, an hour and a half each, in order to let the guests enjoy their time; maybe ride a jet ski.

You then multiply the added number of hours with the consumption rate of a running engine. In this case:

3 hrs x 130 gph = 390 gallons

All that is left to do now is add up the total amount of fuel needed and multiply the number with the price per gallon.

(7500+390) x $3,5 = $27615

In this example, the final cost of your will set you back a little bit more than 27 thousand dollars. Just to be safe, calculate the additional 10% (margin of error) to be prepared against unexpected mistakes. This added amount is not necessarily an ad-on when you consider chartering. Private yacht owners, however, should add the amount to their final cost.

And that's it! You should now have a better idea on the steps you need to follow to calculate the fuel costs for your yacht. While there is quite a bit of information you should keep in mind, it is best to plan out everything with detail to avoid unforeseen costs. If you enjoyed this article, check out our blog post on yacht electrical systems as well.

How Much Fuel Does a Boat Use Per Hour? A Comprehensive Guide

Boating enthusiasts and boat owners alike often wonder how much fuel their boat uses per hour.

The answer to the question of how much fuel does a boat use is not straightforward, as fuel consumption can vary depending on several factors. Boat size, weight, engine type, and speed are just a few examples of the variables that can affect fuel usage.

Understanding how much fuel a boat uses per hour is crucial for boaters who want to plan their trips and budget accordingly. Furthermore, knowing how to calculate fuel consumption can help boaters make informed decisions when shopping for a new boat or engine.

In this article, we will explore the factors that influence fuel consumption in boats and provide tips on how to estimate fuel usage. By the end of this article, readers will have a better understanding of how much fuel their boat uses per hour and how to optimize their fuel consumption.

Understanding Fuel Consumption in Boats

Boat fuel consumption can vary significantly depending on various factors. Understanding these factors is crucial to estimate how much fuel a boat will consume in a given period. This section will discuss some of the critical factors that affect fuel consumption and how to calculate it.

Factors Affecting Fuel Consumption

• Boat Type and Size: The type and size of the boat have a significant impact on fuel consumption. Smaller boats tend to consume less fuel than larger boats. For example, a 20-foot boat will consume less fuel than a 40-foot boat with the same engine.
• Engine Type and Size: The type and size of the engine also play a crucial role in fuel consumption. A larger engine will consume more fuel than a smaller engine, even if both are of the same type. Gasoline engines tend to consume more fuel than diesel engines.
• Weight: The weight of the boat and its load can affect fuel consumption. A heavier boat will require more fuel to move than a lighter boat.
• Speed: The speed at which the boat is traveling can significantly impact fuel consumption. Boats that travel at higher speeds tend to consume more fuel than boats that travel at lower speeds.
• Weather and Water Conditions: Weather and water conditions can affect fuel consumption. Boats traveling against the tide or in rough water will consume more fuel than boats traveling with the tide or in calm water.

Calculating How Much Fuel Does a Boat Use Per Hour

To calculate fuel consumption, you need to know the fuel burn rate of the engine. The fuel burn rate is the amount of fuel the engine consumes per hour. You can calculate the fuel burn rate by dividing the engine’s horsepower by the fuel consumption rate.

For example, if an engine has a horsepower of 100 and consumes 10 gallons of fuel per hour, the fuel burn rate would be 10/100, which is 0.1 gallons per horsepower per hour.

Once you know the fuel burn rate, you can estimate how much fuel the boat will consume in a given period. For example, if the boat travels at a speed of 20 knots and has a fuel burn rate of 0.1 gallons per horsepower per hour, and the engine has 200 horsepower, the boat will consume 20 gallons of fuel per hour.

In conclusion, understanding fuel consumption in boats requires knowledge of several critical factors, including boat type and size, engine type and size, weight, speed, and weather and water conditions. Calculating fuel consumption involves determining the fuel burn rate of the engine and estimating how much fuel the boat will consume in a given period.

Types of Boats and Their Fuel Consumption

When it comes to fuel consumption, different types of boats have different requirements. Factors such as the boat’s size, weight, and speed all play a role in determining how much fuel it will consume per hour. Here are some common types of boats and their typical fuel consumption rates.

Fishing Boats

Fishing boats are typically smaller and slower than other types of boats, which means they use less fuel. On average, a fishing boat will use between 3 and 8 gallons of fuel per hour at cruising speed.

Pontoon Boats

Pontoon boats are popular for leisurely cruising and entertaining. They are larger than fishing boats and have a flat bottom, which makes them more stable. However, this also means they use more fuel. A pontoon boat will typically use between 5 and 15 gallons of fuel per hour at cruising speed.

Bass boats are designed for fishing and are typically smaller and faster than other types of boats. They are also more fuel-efficient, using between 3 and 6 gallons of fuel per hour at cruising speed.

Center Console Boats

Center console boats are versatile and can be used for fishing, cruising, and water sports. They are larger than bass boats and typically use between 10 and 20 gallons of fuel per hour at cruising speed.

Cabin Cruiser Boats

Cabin cruiser boats are designed for overnight trips and have a cabin with sleeping quarters and a bathroom. They are larger and heavier than other types of boats, which means they use more fuel. A cabin cruiser boat will typically use between 20 and 30 gallons of fuel per hour at cruising speed.

Bowrider Boats

Bowrider boats are popular for water sports and leisurely cruising. They are typically smaller than cabin cruiser boats but larger than fishing boats. A bowrider boat will typically use between 5 and 15 gallons of fuel per hour at cruising speed.

Overall, the fuel consumption of a boat depends on various factors such as boat size, weight, and speed. Understanding the fuel consumption of different types of boats can help you make an informed decision when choosing a boat that meets your needs while minimizing your fuel costs.

Engine Size and Power

Understanding horsepower.

When it comes to boat engines, horsepower is a crucial factor in determining how much fuel a boat will consume per hour. Horsepower is a measure of the engine’s power output, and it directly affects the speed and performance of the boat. The more horsepower an engine has, the faster the boat will go, but it will also consume more fuel.

How Engine Size Affects Fuel Consumption

Another important factor that affects fuel consumption is the engine size. The size of the engine is measured in horsepower, and it can range from small outboard motors with 9.9 hp to large inboard engines with over 300 hp. In general, larger engines consume more fuel than smaller engines, but they also provide more power and speed.

The type of engine is also important when it comes to fuel consumption. Two-stroke engines are known to be less fuel efficient than four-stroke engines, but they are also lighter and provide more power. Four-stroke engines, on the other hand, are more fuel efficient and produce less emissions , but they are heavier and provide less power.

The weight of the boat and the drag created by the hull also play a role in fuel consumption. Heavier boats require more power to move through the water, which means they will consume more fuel. Boats with a sleek, streamlined hull design will create less drag and require less power to move through the water, resulting in lower fuel consumption.

Here is a table that shows the average fuel consumption for different engine sizes:

It’s important to note that these numbers are just averages, and actual fuel consumption will depend on a variety of factors, including boat weight , hull design, and weather conditions.

Cruising Speed and Fuel Efficiency

Understanding cruising speed.

Cruising speed is the speed at which a boat travels comfortably and efficiently. It is important to understand that cruising speeds vary depending on the type of boat, weather conditions, water conditions, and the number of passengers on board. In general, most boats have a cruising speed of around 20-30 knots.

When a boat is traveling at its cruising speed, it is operating at its most efficient fuel consumption rate. Going faster than the cruising speed can result in a significant increase in fuel consumption. On the other hand, going slower than the cruising speed can also result in increased fuel consumption as the boat struggles to maintain speed.

How to Optimize Fuel Efficiency

To optimize fuel efficiency, it is important to find the ideal cruising speed for your boat. This can be done by conducting a fuel consumption test. Take a piece of paper and make a table, or use a spreadsheet, listing out the rpm, speed in mph, and amount of fuel burned per hour, or gph. Divide the speed by the gph, and you’ll get mpg.

To further optimize fuel efficiency, consider the following tips:

• Reduce weight on board: The more weight on board, the more fuel the boat will consume. Remove any unnecessary items to reduce weight.
• Maintain the boat: A well-maintained boat will operate more efficiently and consume less fuel.
• Adjust trim: Adjusting the trim of the boat can help reduce drag and increase fuel efficiency.
• Monitor weather and water conditions: Rough weather and choppy waters can cause the boat to consume more fuel. Avoid these conditions when possible.

In conclusion, understanding cruising speed and optimizing fuel efficiency can help reduce fuel consumption and save money. Conducting a fuel consumption test and following these tips can help you find the ideal cruising speed for your boat and reduce fuel consumption.

Fuel Costs and Maintenance

Boat ownership comes with a set of responsibilities that extend beyond simply enjoying the water. One of the most significant factors to consider is the cost of fuel and maintenance.

Calculating Fuel Costs

Fuel costs are a significant expense for boat owners, and calculating them can be challenging. The amount of fuel a boat uses per hour depends on several factors, including the size and weight of the vessel, the type of engine, and the speed at which it is traveling.

Boat owners can use a fuel consumption calculator to estimate how much fuel their vessel will consume based on these factors. It is important to remember that fuel prices can vary depending on the marina and the type of fuel used.

Fuel-Efficient Boats

Fuel-efficient boats are becoming increasingly popular among boat owners due to the cost savings they offer. These boats are designed with fuel efficiency in mind and typically have smaller engines that consume less fuel.

Boat owners can also take steps to make their vessels more fuel-efficient, such as reducing their speed, maintaining their engines, and properly inflating their tires.

Maintenance Tips

Proper maintenance is crucial for keeping a boat in good working condition and minimizing fuel costs. Boat owners should regularly inspect their vessels for any signs of wear and tear and address any issues promptly.

Regular engine maintenance, such as oil changes and filter replacements, can also help improve fuel efficiency and reduce the risk of breakdowns. Boat owners should also ensure that their boats are properly cleaned and stored to prevent damage from the elements.

In conclusion, fuel costs and maintenance are significant expenses for boat owners to consider. By calculating fuel costs, investing in fuel-efficient boats, and practicing proper maintenance, boat owners can minimize their expenses and enjoy their vessels for years to come.

Frequently Asked Questions

What is the average fuel consumption for a boat per hour.

The average fuel consumption for a boat per hour varies depending on several factors such as the size and type of the boat, the engine’s horsepower, and the speed at which the boat is traveling. As a general rule of thumb, a small boat with a 25-horsepower engine can consume around 2-3 gallons of fuel per hour, while a larger boat with a 200-horsepower engine can consume around 20-30 gallons of fuel per hour.

How do I calculate fuel usage for a boat trip?

To calculate fuel usage for a boat trip, you need to know the boat’s fuel consumption rate, the distance to be covered, and the speed at which you will be traveling. You can use an online fuel consumption calculator or a fuel flow meter to determine the boat’s fuel consumption rate. Once you have this information, you can estimate how much fuel you will need for your trip.

What is the fuel efficiency of a 26-foot boat?

The fuel efficiency of a 26-foot boat depends on several factors such as the boat’s weight, the engine’s horsepower, and the speed at which the boat is traveling. On average, a 26-foot boat with a 250-horsepower engine can consume around 20-25 gallons of fuel per hour at cruising speed.

How much fuel does a 50-foot boat use per hour?

The amount of fuel a 50-foot boat uses per hour depends on several factors such as the boat’s weight, the engine’s horsepower, and the speed at which the boat is traveling. On average, a 50-foot boat with a 500-horsepower engine can consume around 50-60 gallons of fuel per hour at cruising speed.

How much diesel fuel is consumed per horsepower?

On average, a diesel engine consumes around 0.4 pounds of fuel per hour for each unit of horsepower it produces. For example, a 200-horsepower diesel engine would consume around 80 pounds of fuel per hour.

How far can a boat travel on a full tank of gas?

The distance a boat can travel on a full tank of gas depends on several factors such as the boat’s fuel consumption rate, the size of the fuel tank, and the speed at which the boat is traveling. On average, a boat can travel around 100-200 miles on a full tank of gas. However, this can vary significantly depending on the boat’s size, weight, and engine horsepower.

• Recent Posts

• Responsibilities of a Fourth Engineer on Cargo Ships – September 10, 2024
• The Role of Cargo Ships in Global Trade – August 22, 2024
• Report: Yang Ming’s YM Mobility Explosion at Ningbo-Zhoushan Port – August 9, 2024

About the author

I worked as an officer in the deck department on various types of vessels, including oil and chemical tankers, LPG carriers, and even reefer and TSHD in the early years. Currently employed as Marine Surveyor carrying cargo, draft, bunker, and warranty survey.

Latest posts

Is Maritime Security Necessary on Modern Ships?

It’s vital for ships to stay vigilant. Isolation from land means having no backup or protection for miles, making them vulnerable to attacks and other threats. Equip modern ships using modern maritime security methods.

Responsibilities of a Fourth Engineer on Cargo Ships

A Fourth Engineer on cargo ships oversees engine room operations, machinery maintenance, and ensures compliance with regulations like MARPOL.

The Quality Control Process in Marine Manufacturing

Companies in the marine manufacturing space must have tight and effective quality control processes. What steps should an effective quality control process include?

• 2024 BOAT BUYERS GUIDE
• Email Newsletters
• Boat of the Year
• 2024 Freshwater Boat and Gear Buyers Guide
• 2024 Boat Buyers Guide
• 2024 Water Sports Boat Buyers Guide
• 2024 Pontoon Boat Buyers Guide
• Cruising Boats
• Pontoon Boats
• Fishing Boats
• Personal Watercraft
• Water Sports
• Boat Walkthroughs
• What To Look For
• Watersports Favorites Spring 2022
• Boating Lab
• Boating Safety
• Ultimate Boating Giveaway

Calculating Boat Fuel Consumption

• By Brett Becker
• Updated: September 30, 2019

Calculating a boats fuel consumption proves important to boaters for number of reasons. With knowledge of a boat’s fuel economy-how much fuel the boat burns per mile or nautical mile of travel-boaters can estimate the range they can safely expect to run.

Some boaters go as far as to develop a boat fuel consumption chart for their boat. You can use any Boating boat test as a model for this. Of course, you can also install a fuel consumption monitor if your boat’s engine does not provide a fuel consumption readout.

Additionally, knowing your boat’s fuel consumption provides a good idea of how much it will cost you to operate the boat. When shopping for a new boat or marine engine, fuel consumption provides a major basis of comparison.

Estimating Your Boat’s Fuel Burn

It’s a different story with a boat. Since sea conditions vary more widely than road conditions, the time it takes to cover a distance varies more, so fuel consumption is measured in gallons per hour. Also, while many engines have fuel flow readouts , the ability to estimate fuel burn while shopping for a boat or engine is important. You measure fuel efficiency in pounds of fuel used per horsepower developed per hour. The pros call it “brake-specific fuel consumption.” This makes it important to know that gasoline weighs about 6.1 pounds per gallon and diesel fuel 7.2 pounds per gallon.

On average, an in-tune four-stroke gasoline engine will burn about 0.50 pounds of fuel per hour for each unit of horsepower. Likewise, a well-maintained diesel engine burns about 0.4 pounds of fuel per hour for each unit of horsepower it produces. These figures don’t take drag of the boat, sea conditions, or efficiency losses through transmissions and bearings into account. But they provide an excellent relative difference between engines when shopping.

Confused yet? Look at the mathematical examples below, and a boat’s fuel economy should become clear.

Boat Fuel Consumption Formulas and Calculator

Below is the Formula to Estimate Maximum Engine Fuel Consumption.

GPH = (specific fuel consumption x HP)/Fuel Specific Weight

Constants | Gas | Diesel SFC: .50 lb. per HP | .40 lb. per HP FSW: 6.1 lb. per gal. | 7.2 lb per gal.

300-hp Diesel Engine Example GPH = (0.4 x 300)/ 7.2 = 120/7.2 = 16.6 GPH

300-hp Gasoline Engine Example GPH = (0.50 x 300)/ 6.1 = 150/6.1 = 24.5 GPH

Keep in mind that these formulas apply when the engine is making peak horsepower, which usually is near wide-open throttle. Fuel consumption will be decreased at cruising speeds. Also remember that engines with electronically-managed fuel injection and direct injection will yield higher fuel efficiency .

To apply these formulas to your boat, just plug in its horsepower rating and multiply it by the specific fuel consumption average, then divide the product by the fuel specific weight.

Another way is to take the total engine horsepower and divide it by 10 for gas engines or .06 for diesel engines. As you can see, this formula is simpler to calculate and easier to remember. You don’t even need a pencil and paper. It’s just not as accurate as the formulas above. The result represents the approximate gallons per hour the engine will burn at wide-open throttle. For example, a 150-horse engine will use about 15 gallons per hour. Though these figures represent averages and can vary from 10 to 20 percent, they’ll put you in the ballpark so you can plan a long-distance cruise without fear of running out of gas . You can also keep track of your boat’s fuel consumption by installing a fuel monitor.

• More: Engines , fuel consumption , How-To

More How To

On Board With: Monique Richter

Grady-White Pulls off Its Largest Raft-up Ever in Vieques, Puerto Rico

Installing Retractable Transom Straps

How to Choose a Trailer Winch

Boat Test: 2024 Hurricane SunDeck 2600 OB

Boat Test: 2024 Brabus Shadow 1200 ­Sun-Top

Inflatable Water Mats for Boaters

Boat Test: 2024 Monterey Elite 30

• Digital Edition
• Customer Service
• Privacy Policy
• Terms of Use
• Cruising World
• Sailing World
• Salt Water Sportsman
• Sport Fishing
• Wakeboarding

Many products featured on this site were editorially chosen. Boating may receive financial compensation for products purchased through this site.

Copyright © 2024 Boating Firecrown . All rights reserved. Reproduction in whole or in part without permission is prohibited.

About The Fuel Consumption Calculator

Let’s face it. Boating is fun, but filling up at the marina (or even from your own fuel cans) can get expensive quick. Especially with the high cost of fuel these days.

It would be nice to know if there was a simple way to reduce your fuel consumption without cutting back on your boating enjoyment.  Fortunately, there is and that is exactly why I created the free boat fuel consumption calculator.

With it, you can calculate your engine fuel consumption and the cost of fuel for a single trip and for the entire season. You can even do “what if” comparisons to see how a change in operating speed could save you money at the pump.  Having an understanding of your boat’s basic fuel consumption curve will help you find that operating speed “sweet spot” where you’re still having fun and getting where you need to go, but with a little extra cash in your pocket.

Get the Fuel Calculator

Fill out the form below to get immediate access to the Fuel Consumption Calculator.

By clicking the Submit button below, you will get immediate access to the Fuel Consumption Calculator and agree to receive the monthly BoaterInput newsletters. We promise, no spam or junk mail, just valuable boating information and you can unsubscribe anytime.

Why Did I Build This Tool?

To be honest, I built this tool because no one else has built one.   And, because I think knowing your fuel consumption is helpful in several situations:

• When your buddies are offering to “help” with gas and want to know how much to chip in.   Now you can easily let them know what the actual tab is (which is likely more than they were anticipating)
• You are interested in reducing the cost of using your boat.   This tool will help you figure out how small changes in your operating speed can add up to substantial savings.
• You are wondering how big of a boat to buy .  A 21′ bass boat with a 250 HP engine would be cool but my smaller boat with a 150 is much more economical.  In fact, the fuel consumption calculator estimates that I save over $800 a year by going with 100 fewer ponies.  That equates to several more rod/reel combos and far fewer trips lugging gas down to the dock.
• You want to better understand the ongoing costs of boat ownership.   Are you someone who likes to follow a household budget?  Or are you contemplating buying your first boat and are wondering if you can afford the ongoing expense?  This tool will help you plan your budget to minimize surprises.

So, if any of these reasons interest you, click on button to request access to the fuel consumption calculator.  Best of all, it is completely free!

How Did I Design The Tool?

In order to estimate fuel consumption, I needed three inputs and a little algebra.

The first input was fuel consumption per horsepower .  As it turns out, gas engines consume approximately 0.5 lbs of fuel per horsepower per hour at wide open throttle (WOT).  Diesel engines consume slightly less (0.4 lbs).  This assumes a properly running, well-tuned engine.  Of course, unlike meat and produce, you don’t buy gas by the pound but by the gallon.  So, to convert fuel consumption into gallons, you simply divide by the fuel weight of 6.1 lbs per gallon for gasoline and 7.2 lbs for diesel.   But this still doesn’t get us where we need to be.  That is because, unless you are a boat racer, most do not run their engine at WOT 100% of the time.  Therefore, we need to account for reduced fuel consumption at lower RPM ranges.

This takes us to our second input – the relative rate of fuel consumption across the RPM band .  For this, I examined the fuel consumption curves for a variety of engine brands – including Mercury, Yamaha, Honda and Suzuki Outboards.  I even looked at data for MerCruiser and Volvo sterndrive (also known as I/O) engines.   For each engine type, I compared the fuel consumption curves for multiple engine sizes ranging from 25 HP to 425 HP for Outboards and 3.0L to 8.2 L for Sterndrives.

The third, and final, input needed is user-supplied data on how long, how often and at what speed you typically operate your engine(s) .  For this last item, I break things down into four categories for simplicity: Idle speed (between 500 and 1,000 RPMs) that is often used when docking or going through no-wake zones, Half Throttle (around 3,000 RPMs) which is often enough to hold a boat on plane, Three-Quarters throttle (~4,500 RPMs) and then WOT (~6,000 RPMs) .

In examining all of this data, I discovered two key things: 1) though the total fuel consumption varies by engine size, the relative rate of consumption is fairly constant.  In other words, whether you are looking at a 25 HP or 250 HP, the proportion of fuel consumed at various RPM ranges in comparison to WOT does not vary much.  And 2), the rate of fuel consumption is not linear across the RPM band.  For example, at half throttle (roughly 3,000 RPMs), you are only consuming about 30% of the fuel that you would at WOT (approximately 6,000 RPMs).  At three-quarters throttle, the rate is about 60%.  This is significant because it tells you that the last quarter of the throttle is far less efficient and key to saving you money on fuel.

Try my free tool and find out for yourself how small changes in your boat usage can really add up to big savings.

How to Use the Fuel Consumption Calculator

Using the tool is very simple.

The first thing you need to do is choose whether you want to estimate “Fuel Consumption only” based on your current usage OR “Also do What If Comparisons” to see how changes in your operating speed impacts your fuel economy.

Next, enter your engine parameters (size, number of engines, gas vs. diesel) and usage frequency (number of trips per year and average engine running time per trip) along with your average price for fuel.

Finally, specify the approximate percent of time you use your engine per outing at Idle speed, Half throttle, Three-Quarters Throttle and WOT.  If you chose to do “What Ifs”, you will need to specify the percent of time based on your current usage and an alternative usage scenario.

The calculator will then estimate the Gallons consumed per Outing , the Fuel Cost Per Outing , and the Total Fuel Cost Per Year .  If you ran a “What If” scenario, you will also see the potential savings .

Give the tool a try and let me know what you think.

Be a Beta Tester…And Give Me Your Feedback!

This is a brand-new tool and unlike anything else available online.

It is still in beta-testing mode and so I would love it if you tried it and gave me your feedback.  Are the results consistent with your experience?  Is it easy to use? Is there anything else you would like to see?  If you are willing to share your experience, I’ll continue to “tweak” the tool to make it even better.

My goal is to help boaters save money and increase their boating enjoyment.  After all, if you are spending less on gas, that leaves more for tackle, gear and accessories, right?

Click on the button to access my free tool and let me know what you think.

what our members are saying about their boats

“This boat gives you a fast, dry, and smooth ride.”  (Overall Rating: 10)

“Wide beam and large cockpit.  Love the open feel.” (Overall Rating: 9)

“The Formula brand is a well-built boat that uses high end components and has things such as fume detection for the bilge and other items like that are not seen on other brands. The seats are very comfortable and both interior and exterior are holding up extremely well. The boat handles great and has a very solid ride.” (Overall Rating: 10)

“Not many people are very familiar with Bryant but they build a quality boat that is a bit more affordable than some of the other premium names. I have had this boat 5 years now and it looks great and rides well.” (Overall Rating: 9)

“It’s the best all-weather boat I’ve owned for lakes. Handles just about anything that’s marginal to get back to the ramp safely. And plenty of storage room, actually it could be too much room at times.” (Overall Rating: 10)

“When I bought it , it was probably the best deal one could find for a fiberglass bass boat with absolutely no wood in it. The boat and Yamaha 70 have performed flawlessly for 12 years.” (Overall Rating: 10)

“This model falls into the category that most salt water fishermen refer to as “Bay Boat”. It has a center console which provides tremendous stability and a deeper hull than a “flats” boat for smoother ride on choppy water. The boat is made for fishing and has very few comfort features for cruising. It is not my favorite hull because it draws a little more water than some of the other shallow water bay boats such as Pathfinder.” (Overall Rating: 9)

“Great boat, solid ride… great bay boat for fishing. Fast with Yamaha 300!!” (Overall Rating: 10)

“Excellent high-end Pontoon Boat with a 400hp R Mercury outboard Racing motor. Too nice to be a Pontoon Boat. Rear twin electric recliners.” (Overall Rating: 9)

“We had a lot of fun using this boat the past summer. it can accommodate nine persons, has comfortable seating for all passengers, is easy to board for both passengers and water skiers, handles well in rough water, is easy to launch and dock, looks great on the water and drew lots of compliments from all who saw it on the water.” (Overall Rating: 10)

“Great boat and a great price point. Carolina flare and deadrise makes for an exceptionally dry boat which I would expect from any Carolina boat builder that builds primarily for the Atlantic. This is not a shallow draft boat for its size, however….I would say it drafts in 12″ +.” (Overall Rating: 8)

Join Our Community

Sign up for our newsletter and get access to the most recent content, as well as opportunities to participate in community surveys.

Help us grow our knowledge base

If you are looking to purchase a boat, be sure to check out the boating reviews left by other boat owners.

If you already own a boat, be sure to share your experiences by submitting a review so others will benefit from it.

BoaterInput.com

Email: [email protected]

Follow us on:

Terms Of Use | Privacy Policy | Copyright Left Brain Marketing, 2023

Helpful? Subscribe to the Free BoaterInput Monthly Newsletter

• Receive the latest reviews and insights
• Participate in studies to earn gift cards
• Only 1X per month
• Your email is NEVER shared with anyone

Your source for the latest news on yachts, boats and more. Read through our articles to find out how to compare boats and find the right fit for you!

Measuring your Yacht Fuel Consumption per Hour

Oct 10, 2019

less than a min

How to measure your yacht fuel consumption per hour

Yachts are quite similar to other vehicles in the sense that they work through fuel. Similarly to any other vehicle, it is important to calculate the yacht fuel consumption per hour before you plan a trip or before you purchase a vessel. Fuel consumption is also a good comparison base between boats. Whether before going on a trip, or buying a yacht, you need to have all the facts straight and know how much money you are going to invest not only at once upon purchase but also periodically.

There are different factors in the fuel consumption of a yacht. For example, if you use a generator or if you stay at anchor instead of docking, the fuel consumption will be increased . The itinerary will change fuel consumption as well. Sea is different than roads and the conditions in a sea change more dramatically than on land, which also impacts fuel consumption.

Fuel consumption for boats is measured in gallons per hour . The efficiency of boat fuel is measured in pounds of fuel that are used in an hour per horsepower. In order to be able to read the calculation right, any boat owner should know that gasoline is almost 6.1 pounds per gallon while diesel is 7.2 pounds per gallon .

Usually, if you consider that all sea conditions are pristine, the fuel consumption of a normal diesel engine is 0.4 pounds per hour for each unit of horsepower.

How to calculate yacht fuel consumption

Calculating it by hand is complicated, which is why many people choose to use online calculators . The way it works is it allows you to put down certain parameters that calculate the fuel consumption. These parameters include route , units of measurement and engine power .

Lastly , what most people are interested in is actually the cost of fuel consumption per hour. So the last parameter to include is the current price of fuel . Marine websites usually include this price up to date.

Another step that people have taken is develop a boat fuel consumption chart for their own boat and find the average in a month.

Alternatively, there is a formula that calculates the maximum fuel consumption of the engine which is:

GPH = (specific fuel consumption x HP) / The specific weight of fuel

This formula determines the fuel consumption when the engine is at full speed . If the speed is decreased then the fuel consumption is decreased as well. Basically, what you need to do is include the horsepower rate of the boat and you multiply it by the specific fuel consumption average and you divide that product by the weight of the fuel.

If you want to compare your boats GPH with other boats than you can use TheBoatDB database. If you already have a boat you can register for free and compare it with other boats within the database.

These are simple methods to calculate fuel consumption, however for a precise one you would have to know all the specifics of your boat and put the parameters through the calculator.

You might like these too

What is a Chine on a Boat

Oct 01, 2021

Flat Bottom Boat Advantages

Sep 30, 2021

Shoal Keel Sailboats Advantages and Disadvantages

Sep 13, 2021

Shallow Draft Boats Explained

Sep 06, 2021

Best Boat for Open Ocean Sailing

Aug 27, 2021

Best Boat Design for Rough Water

Aug 25, 2021

Visit our Popular Forums

• Monohull Sailboats
• Multihull Sailboats
• Powered Boats
• General Sailing
• Antares Yachts
• Fountaine Pajot
• Lagoon Catamarans

Cruising Business

• Boat Classifieds
• General Classifieds
• Crew Positions
• Commercial Posts
• Vendor Spotlight

Life Aboard a Boat

• Provisioning: Food & Drink
• Families, Kids, & Pets Afloat
• Recreation, Entertainment, & Fun
• Boat Ownership & Making a Living
• Liveaboard's Forum

Seamanship, Navigation & Boat Handling

• Seamanship & Boat Handling
• Training, Licensing, & Certification
• Health, Safety, & Related Gear
• Rules of the Road, Regulations, & Red Tape

Engineering & Systems

• Const. / Maint. / Refit
• Product / Service Reviews
• Electronics: Comms / AV
• Electrical: Batts / Gen / Solar
• Lithium Power Systems
• Engines & Propulsion
• Propellers & Drive Systems
• Plumbing / Fixtures
• Deck Hdw: Rigging / Sails
• Aux. Equipment & Dinghy
• Anchoring & Mooring

Photo Categories

• Member Galleries
• Life Onboard
• Sailing in the Wind
• Power Boats
• Cruising Destinations
• Maint. & Boat Building
• Marine Life
• Scuba Diving & Divers
• General Photos

Recent Photos

Listing Categories

• African Cats
• view more »
• Crew Wanted
• Crew Available
• Enhance Your Account
• Meet the Mods
• Meet the Advisors
• Signup for The Daily Cruiser Email

> > Please support our sponsors and let them know you heard about their products on Cruisers Forums. 17-07-2017, 07:23   Boat: "Wanderlust" -- 1999 Jefferson Rivanna 52' and costs and was so stunned by the results that I decided to share. We have a 42' 1986 Chris Craft aft . She weighs in at 36,000 lbs and has been repowered with 330 hp Cummins 6BTA diesels. In May, we took her from near Tampa, FL to the for a two week trip. During that trip, there were stretches near bridges, , and no-wake zones where we were at minimum wake speeds but most of the time we ran her at cruising speed of 2300 , which works out to about 19 mph on plane. The trip was 501.6 miles long. Some of it was Intercoastal waterway and some was open Gulf waters. We used 693 gallons of for a cost of 1925.89. This worked out to 14.6 gallons per hour or about .7 miles per gallon. Overall, we were pretty pleased. Then we got home and started looking at the log book entries. By the time we motored in and out of or , passed through no wake zones, etc, we were averaging about 9.9 mph for the whole trip. Really??? After discussing with a couple of friends, we decided to do a test. We filled her up, did 86 miles in two day trips, and then filled her up again. During the day trips, we ran the engines at "cruising" speed of 2300 for about five minutes to blow out the turbos but otherwise kept the speed at about 1400 rpm, which yielded 10 mph with some trim tabs engaged. When we refilled, we took in 43 gallons. This worked out to 4.9 gallons per hour or 1.58 mpg! The two day cruises were less noisy and almost... serene. We still got to our destinations without a significant delay and still had a great time. So, we took the slower burn rate and recalculated the recent Keys trip. If we had used the same approach as the two test trips, we would have used well under half the fuel and would have saved nearly $1100!!! We were pretty shocked. John 17-07-2017, 07:39   Boat: FP Belize Maestro 43 and OPBs But yes, running at speed (8-9 knots) will only use a fraction of the fuel you use pushing at twice that speed. 17-07-2017, 08:01   Boat: "Wanderlust" -- 1999 Jefferson Rivanna 52' speed (8-9 knots) will only use a fraction of the fuel you use pushing at twice that speed. 17-07-2017, 08:16   speed. ut it does sound you are doing pretty good MPG in the scheme of things. - Elmore Leonard 17-07-2017, 08:25   at 7 knots or 2600-2700rpm our 100hp burns around 3gph. If I take my time and go 5 knots at 1800, it burns about 1gph. I do revv the once an hour five times to plow out the soot. It's a big difference, especially when talking about a long run. 17-07-2017, 08:49   Boat: SAnta Cruz 27 17-07-2017, 09:05   Boat: Custom 41' Steel Pilothouse Cutter speeds of 7-8 knots. The last 1.5-2 knots are fantastically expensive compared to the first five or six. At five knots in flat , I can a 16 ton sailboat (steel hull) with a 60 hp naturally aspirated 2433 cc on about .75 gal/hour. A fraction of your burn, but it's also a sailboat! Most makes have a fuel map where you can find the sweet spot for fuel economy. How that translates to speed is a function of drag, prop and sea state. . Can't sleep? Read for fast relief. Can't read? Avoid , because it's just personal reviews of sea books. 17-07-2017, 09:27   Boat: Lord Nelson 41 costs you fuel. That is just the . As others have mentioned, the drag increases with speed, displacement is preferable to being on a plane... you therefore also pay additionally for speed. If you were motoring at 3-5 knots with one engine, you likely would also save on fuel mileage. Your choice of conditions. 17-07-2017, 09:45   Boat: bare boat charter world wide ..,,, We used 7 to 7.2 gallons of fuel for each of the two weeks. Most of that up the every day ( 1400 rpm). We motored a few times for short passages ( 2300 rpm). Fuel guage was still on Full at the end of both charters. We topped off the fuel before returning the to Conch Charters. All that being said.....we have been doing this sailing for many, many decades, our bodies are getting old , well sort of, and feel we still have a couple of years of sailing left in us...I am 77. However, we are both very fit, and stay that way, but the joints are creaking a bit. They get louder when I am wearing my hearing aids. But, I am also interested in fuel bills ( general ides ) for , oh maybe 35 foot vessels, that are comfortable for us entering geezerdom. Twin screw, and able to 15 knots or so. I really like the sleek looking super fasts, like the sea rays, but those are totally out of our range. For distance covered, a from to ( 26 miles ) would be about one or two miles......a sailing vessel is a case of and quart of . Actually, we save our partying until we are on a , anchored or in a slip. But, that is a pretty good analogy. Keep the fun light illuminated 17-07-2017, 10:36   Boat: Island Packet 38 on our last trip where I ran reduced motorsailing a lot, and the numbers are astonishing to me. 17-07-2017, 10:59   Boat: Beneteau 393 "Sea Life" John 17-07-2017, 11:35   Boat: "Wanderlust" -- 1999 Jefferson Rivanna 52' 17-07-2017, 12:29   Boat: None at this time, still looking for my next great looper type vessels and found myself passed once or twice daily by the " Go Fasters". Usually would end up in same area at late afternoon. They would brag about being there 2-3 hours earlier then me. At some point I would approach them with the subject of fuel usage, and they would be amazed at my much lesser burn rate. I would generally travel at 7-8 knts and they would run between 15-20 knts. My savings was $1000's of dollars difference by running in a sensible manner. it's about the adventure, not the trip! 17-07-2017, 14:27   Boat: Island Packet 35 (daily log), it really helps to keep the temptation to throw the throttles forward the next day. 17-07-2017, 14:41   Boat: Island Packet 38 have tiny rudders compared to say a sailboat , Thread Tools Rate This Thread : Posting Rules post new threads post replies post attachments edit your posts is are code is are are are Similar Threads Thread Thread Starter Forum Replies Last Post sailjumanji Electrical: Batteries, Generators & Solar 21 09-05-2021 14:33 nryder64 Great Lakes 1 17-10-2015 19:09 NotRealAccount1 Dollars & Cents 12 04-07-2014 14:43 Seif Powered Boats 11 18-10-2012 08:35 - - - - - - - Privacy Guaranteed - your email is never shared with anyone, opt out any time. Boat Fuel Consumption: 5 Tips for Measurement, Efficiency, and Savings Table of Contents Last Updated on November 3, 2023 by Boatsetter Team Boat fuel consumption can be a rather significant expense , and it’s one that goes up as gas prices rise. While it’s true that you have to pay to play, there are some measures boaters can take to cut down on this expense as the price of gas goes up. Here are five tips to help save money on marine fuel for your boat: Lighten your load by removing excess gear and weight. When operating, bring the boat on plane, then leave the throttle alone. Understand how to properly trim your boat—if the bow seems high, trim it down. Ensure your boat’s propeller is the right size, material, and model to maximize performance. Keep the bottom of your boat’s hull clean and smooth. Read on for further details and instructions on implementing each of these five tips, and be sure to use a boat fuel consumption chart to understand your engine’s ideal fuel economy. Own a Boat? Learn How to Offset the Cost of Ownership by Listing on Boatsetter 1. Lighten the Load Many boats get loaded down over time without anyone even noticing, and the heavier your boat is, the less efficient it will be. While some gear is absolutely necessary, some other stuff may not be — and when added up it can weigh a ton. Think about removing that extra anchor rode, the big box of fishing weights, dishware that never gets used, and similar items from the boat. Also consider the water and waste tanks, if your boat has them. Can you get by with a half-full water tank? If so, you’ll shed eight pounds per gallon. W When is the last time you pumped out the waste tank? Again, you can remove a lot of weight from the boat by lowering its level. 2. Bring the Boat on Plane, then Leave the Throttle Alone As is true with cars, boats tend to burn less gas at slower speeds. Boats are different, however, in that most get the worst fuel economy just below planning speed and the best economy just above it. There are certainly some exceptions (such as some trawlers and some boats propped to go very fast) but as a general rule, the average outboard powerboat will break onto plane right around 3000 to 3500 RPM. And in most cases, this is where they get the best cruising fuel economy. Note that on newer board your MPG may be displayed on a gauge at the helm . In this case, simply eyeball that gauge and you can see just when the boat’s getting its peak mileage. 3. Tweak the Trim Most boats run best on an even keel at a slight inclination of just two to four degrees. But depending on the boat’s design and the weight distribution of gear and passengers, you may need to adjust engine or drive trim and/or trim tabs to get it running this way. If the bow seems to dig in try trimming the bow up a bit, and if you have to crane your neck to see over the bow, trim the bow down some. 4. Make Sure You Have the Right Propeller Few boaters ever change propellers to see if they can gain a performance edge, but doing so can add several MPH to your cruising speed, which equates to more miles traveled for less gas burned . Finding the ideal prop for your boat may take some experimentation; remember that your goal is to turn wide-open RPM in the middle of the manufacturer’s recommended range, and adding an inch of pitch will decrease rpm by about 200, while dropping by an inch will increase RPM by about the same amount. Also note that switching from an aluminum propeller to a stainless-steel model can gain you one to three MPH, as well. 5. Keep the Bottom of Your Boat Clean Few things sap speed and increase fuel consumption like a dirty bottom. While antifouling paint will keep most of it at bay, its effectiveness can drop with age. Plus, even a freshly-painted boat can develop a layer of scum or slime, and many boats have unpainted underwater surfaces like transducers that growth can adhere to. So, if your boat lives in a wet slip it’s a good idea to pull up to a sandbar or beach once in a while and gently scrub the bottom. If there are any areas where more substantial growth has attached, scrape them clean with a rigid object that won’t damage the surfaces, like a plastic putty knife. Employ all of these tips, and your boat may burn one, five, or even 10 gallons less fuel on your very next trip. Every boat will be different, of course, but no matter how large or small it may be, at today’s gas prices those saved gallons can add up to some serious cash in the bank. Earn an Average of $20,000 or More by Listing Your Boat for Rent on Boatsetter With over three decades of experience in marine journalism, Lenny Rudow has contributed to dozens of boating and fishing publications and websites ranging from BoatU.S. Magazine to BDOutdoors.com. Rudow is currently the Angler in Chief at Rudow’s FishTalk , he is a past president of Boating Writers International (BWI), a graduate of the Westlawn School of Yacht Design, and has won numerous BWI and OWAA writing awards. Browse by experience Explore articles Lake Fork (Dallas, TX) Fishing Guide What is a Tri-Hull Boat? 10 Best Boating Gifts for Her 5 Best Beaches in Melbourne, Florida Sailing Catamaran Fuel Consumption Data From Owners! As an Amazon Associate, we earn from qualifying purchases. We may also earn commissions if you purchase products from other retailers after clicking on a link from our site. As much as I love turning off the engine and only using the sails, sometimes I have found myself in situations where I was forced to rely on engine power. Situations like a brewing storm or the need to head straight into the wind. Understanding catamaran fuel efficiency and how far you can go on a certain amount of fuel is vital to keep you away from bad situations. Catamarans are more (fuel) efficient than a monohull (regular sailboat). During calm conditions, while powering under one engine, fuel consumption is between 0.3 gallons per hour (gph, of diesel) and 1.1 gph according to the data collected. Below I have gathered fuel consumption data from catamaran owners. Model GPH single engine L/h Single Engine Time until Empty (h) Distance until Empty (nm) Catalac 900 0.3 1.2 79 476 Gemini 105MC 0.7 2.8 49 292 Lagoon 380 2008 0.6 2.1 106 458 Fountaine Pajot 38 1.1 4.0 50 250 Lagoon 440 0.5 1.9 263 1106 Lagoon 450 1.1 4.0 250 1751 Table of Contents What Impacts Catamaran Fuel Economy? Worth noticing is that going from one engine to two engines doesnt increase your speed by very much, but it doubles your fuel consumption. Turning on engine number two will give us seven kts and fuel consumption of 4 L per hour. That’s actually a pretty good “return on investment” since the Catalac only gets one kts of extra speed while doubling fuel burn. Slowing down will almost always save fuel ( source ) Below are more of the data I have collected, let’s take a look at what it says. Model Fuel Capacity (Gal) Fuel Capacity (L) Length Engine Manufacturer Engine HP GPH Single Engine L/h Single Engine L/h Dual Engine GPH dual engine (kts) Single Engine speed (kts) Double Engine Speed (kts) Time until Empty (h) Distance until empty (nm) Catalac 900 25.1 95 30ft Nanni 2*14HP 0.3 1.2 2.4 0.6 6 7 79 476 Gemini 105MC 36 136 34ft Westerbeke 27HP 0.7 2.8 - - 6 7 49 292 Lagoon 380 59 223 38ft Yanmar 2*20HP 0.6 2.1 4 1.1 4.3 7 106 458 Fountaine Pajot 38 53 200 38ft Yanmar 2*27HP 1.1 4.0 - - 5 7 50 250 Lagoon 440 132 500 44ft Yanmar 2*55HP 0.5 1.9 - - 4.2 5.5 263 1106 Lagoon 450 264 1000 45ft Volvo Penta 2*55HP 1.1 4.0 6 1.6 7 8 250 1751 The conclusion? Speed comes at a premium. Time until empty This column is based on the lowest possible fuel consumption with one engine. This is the number of hours that you are able to cruise when starting with full fuel tanks. Distance until empty This is how far in Nautical Miles, you are able to sail at cruising speed with one engine. How You Can Improve Sailboat Fuel Efficiency, 10 Tips! 1. drive your boat as you drive your car. Ok, maybe not as how you actually drive it, but the way your teacher told you to drive it, accelerate slowly, keep a steady throttle, and avoid high revs. Every engine has an RPM (revolutions per minute) where the engine works the most efficiently; this is the sweet spot where you want to drive the boat. This is usually around 75-80% of max RPM. This RPM is not the same as the RPM of your boat’s top speed, but something you should consult is the datasheet of your engine, usually, this is somewhere between 2000- 2900 RPM on diesel, and 3000 – 4000 RPM on a gasoline engine. Save fuel on your catamaran by   slowly accelerating and then keeping your boat in the RPM range stated in the datasheet; this will ensure you get the engine’s optimum efficiency. Set the RPM, check if the speed is enough to get you where you want in the time you have, if you are ok with the numbers, then just relax and enjoy fuel economy at work (if there’s ever such a thing on a boat…) 2. Keep the Boat Light Getting a boat to move requires energy, getting a heavier boat to move requires even more energy; keeping your boat light will significantly enhance your fuel economy. Firstly, the boat will ride higher on the water; this means less underwater drag. Drag is something that dramatically impacts speed; this is one reason why Catamarans are faster than conventional sailboats/monohulls. Removing weight can be done by only packing the stuff you need for the planned trip, this means that maybe you dont need full tanks of diesel and water, which can be more than a ton of weight.  3. Use Your Sails When You Can Using your sails when motoring will be more than doing just one of the two separately. See it as adding another engine, even if you were only doing 0.5 kts with the sails, these 0.5 kts will make the engine work less hard and thus decrease the amount of fuel needed to travel at the same speed. Or, you can go faster with the same consumption. 4. Keep Your Hulls and Propeller Clean  Keeping everything below the waterline clean, just as discussed above, the more surface area under the boat, the more drag. If the surface is is also uneven due to barnacles, then this also increases drag. This is important for the boat to move smoothly through the water, but it is also vital for the efficiency of the props.  A prop that is uneven and not in a hydrodynamically good state will be less efficient and will require higher RPMs to move the boat at the same speed as a clean and shiny one. 5. Avoid Going Straight into the Wind Since a catamaran has such a high profile, it will catch wind even though there are no sails up, so if you head straight into the wind and waves, this will definitely slow down the boat’s speed. Try going close to shore, where the winds might change in a favorable condition. 6. Running One or Two Engines? On most catamarans you can run either one or both engines, as stated in the tables above, running two engines is mainly for increasing speed and not fuel efficiency. You might gain a knot or two, but your fuel cost will almost double in most cases.  If you choose to run your cat only on one engine, there are some significant savings to be done; just make sure you dont overstrain the machinery. Stay within reasonable RPM, as stated by the manufacturer, around 2000-3500. And when you need to go quick, start up the other engine and head for that bridge opening in time 🙂 The last tip on running two engines, try to run them for about the same amount of hours, this means they will be serviced and repaired at around the same time and will be in the same good condition. 7. Keep Your Engines in Good Shape Service and maintenance play a part in fuel economy, although not as much as I think many people believe. Some aspects should be kept a careful eye on. Air filters can clog, this means the fuel to air mixture will be wrong, you won’t get the right amount of HP, and you will feel inclined to give it more throttle than needed. Make sure you service or change your air filters regularly , so they are able to give your engines the fresh air they deserve!  The same applies to fuel filters, although these usually can’t be inspected, make sure you change them according to your service manual , and if your dont have a manual, change it once a year. Other stuff, such as timing, fuel pumps that you could check, but I would only mess around with those if you suspect that your fuel consumption is abnormally high. 8. Track Your Fuel Consumption Every engine is a little bit unique if you find a way to measure your fuel consumption and record parameters such as; RPM, amount of diesel consumed, external conditions(waves, winds, currents, etc.), and boat condition (approximate weight). Then you will know your fuel economy with reasonable precision. This makes trip planning more exact, and you dont have to bring extra fuel(increased weight).  One way to measure is to get a fuel measure instrument such as this one ( Amazon link) 9. Using a Foldable prop The foldable prop is just as it sounds; it is a propeller that can maintain two different positions. When the prop is folded, the blades go from looking like a fan to something that makes way more hydrodynamical sense. According to flexofold, the folding prop improves sailing performance by around 15%. Another cool thing is that once folded, the risk of getting stuck in a net or fishing line is also reduced.   And when you turn your engine on and start revving it up, the blades fold out, and off you go!   10. Electric conversion So if you really want to save on diesel costs, then maybe an electric motor is an option. Although running on electricity isn’t free (you will have to charge them somehow), it can be a cheap option in the long run. Electric conversions are getting more and more common and, therefore, also cheaper. The basic idea is that you switch your diesel engine for an electric motor, and instead of diesel fuel tanks, you will have a lithium battery bank. These can be charged through solar, wind, or connected to a power source in the marina. Going electric is different in some ways; let’s take a look. Firstly going electric is a more silent option. You won’t have the diesel engine’s noise, although you will still have the noise from the prop, so just as an electric car is very silent when moving slow, once you get the boat going up to speed, the sound will also significantly increase. Another more positive change is that you no longer will have to smell diesel fumes, refill diesel, or service all those parts.  Here is a video of Sailing Uma running their electric motor. How To Calculate Fuel Consumption There is an easy way to calculate approximately how much an engine is able to burn at full throttle. The calculation is an estimate and is based on full-throttle action, something that hopefully you won’t have to do for much longer than a few minutes at a time. The calculations will give you an idea of how much fuel you will need.  Are Catamarans More Efficient than other Sailboats? Due to the low drag (small wetted surface), low weight (no keel), and narrow hulls catamarans are more fuel-efficient than a comparable keelboat/monohull. This makes a catamaran more efficient whether under sail or when motoring. Catamarans will therefore burn less fuel than heavy keelboats. The lower weight is mainly due to not needing a lead keel to balance the forces interacting with the sails. There is no need for a keel since the catamaran is stabilized by having a wide beam(that means the boat has a broad base). When the wind acts on the sail and pushes it to one side, the force is transferred to the leeward hull(the side that is not faced towards the wind). A boat that has less drag, and weighs less, will need less energy to move. This means your boat will go faster at the same wind speed or if you are motoring, the ship will use less fuel. How To Calculate Fuel Costs Before you are able to calculate your fuel costs you need to gather some information. These are; Approximate hours(h) you will run the engine (s) Approximate hours(h) you will run the generator Gallons per hour, gph, Generator Gallons per hour, gph, engine Price of fuel Once you have gathered the information you can continue to the next step. (Engine time in hours * gph Engine) * Price of Fuel = Cost of Engine Fuel (Generator time in hours * gph Generator) * Price of Fuel = Cost of Generator Fuel Cost of Engine Fuel + Cost of Generator Fuel = Total Fuel Cost  This is a basic equation you can use when summing up the total cost of your fuel usage. You have to take into consideration different fuel costs if you’re using a standalone gasoline generator. If you dont have a standalone generator, but you need more electricity I can recommend this one from Honda, it is the same one that I used when I was sailing the Caribbean, it is not the most high-end, but it did what it was supposed to. Link to Amazon (actually they do not seem to have the one I used, but this looks similar) Why Do Catamarans Have Engines? Sailboats have diesel or gasoline engines for a few reasons; to maneuver in and out of a marina, travel when there is no wind, generate electricity, and increase speed when there is little wind. You might think that having an engine on a sailboat is unnecessary, you have the sails, right?  Well, sailing is fantastic, but it is tough to sail in a confined area such as in a marina or through a tight section through a canal. If you want to go upwind, many times on a catamaran, it is much faster and more comfortable to motor straight into the wind instead of tacking (turning from one side to another). Another aspect is when there is wind but only enough for maybe 1-2 knots; then, you can combine motoring with sailing to make the boat faster and more efficient. How Long Can You Run The Engine on full throttle? This is a question I sometimes get; there are different ways to answer this. The longest time you can continuously run your diesel or gasoline engine on full throttle is until it either overheats, runs out of gas, or gets destroyed. That’s the short answer; the long answer is that it depends on the engine’s condition, the load on the engine, and how good is the cooling Let’s start by looking at engine condition. If you want to get the maximum possible horsepower out of your engine for the most extended amount of time you should know that it’s going to take its toll on the engine. This is not something I would recommend if the engine is something that you are dependent upon working,  A well-maintained diesel or gasoline engine can go for days on full throttle as long as the engine load is balanced, hindering it from over-revving and causing it to break. This is under the assumption that there is necessary cooling to the engine, which is not always the case if you are talking about a catamaran or any other engine that is in confined spaces and made for reasonably low RPM. If all of those criteria are met, it will probably run until there’s no more diesel in the tanks. Here are Some of My Favorite Catamaran Cruising Resources Thank you for reading this article. I hope you found it helpful as you hopefully start your sailing adventures. Here are some resources that I use as a sailor that I hope you’ll also find helpful. These are affiliate links, so if you do decide to use any of them, I’ll earn a commission. But in all honesty, these are the exact things that I use and recommend to everyone, even my own family. Sailboats: If you’re looking for the best boat to suit your needs, I would recommend a catamaran. If you’re interested, I can show you the differences between catamarans and other types of sailboats . Books:  For getting started, I really like  Cruising catamarans made easy . It is actually a textbook from the American sailing association; it is used to get a cruising catamaran certification. There are some other great books, and I have compiled a list of books about cruising catamarans that you will find useful. Communication:  Being out on adventures, whether it be sailing or climbing mountains, good communications are essential to being safe. I recommend two things Google fi (incredibly simple cellular data all over the world) and Garmin inreach mini (for text and voice in remote areas without cell coverage) Sailing courses: Online sailing courses are great for beginners starting out their sailing career; it’s an efficient way of learning the basics of navigation, throttle controls, and maritime safety. I suggest starting with two free courses from NauticEd . To see all my most up-to-date recommendations,  check out this resource  that I made for you! Owner of CatamaranFreedom.com. A minimalist that has lived in a caravan in Sweden, 35ft Monohull in the Bahamas, and right now in his self-built Van. He just started the next adventure, to circumnavigate the world on a Catamaran! Leave a Reply Cancel reply Your email address will not be published. Required fields are marked * Save my name and email in this browser for the next time I comment. Recent Posts Must-Have Boat Gear for Catamaran Sailors! Sailing is probably the most gear-intensive activity I've ever done; there are so many decisions to be made about what gear to buy now, for tomorrow, and what to definitely never buy. The gear on... 6 Best Trailerable Trimarans For Bluewater and Coastal Sailing Having a boat costs a lot of money, even when you are not using it, marina fees, etc. And once it is in the water most sailors never go very far from their "home marina" and sailing will be somewhat... Management Team Carpentry & Joinery Custom Furniture Floor Board Gangway / Paserella Custom Made Mug Holders Deck Caulking Replacement Paint Process Awl Grip Paint Aluminium Paint Yacht Paint Bottom Preparation Antifouling Non-Sleep Deck Paint Barrier Coat Steel Paint Grit Blasting Sun Odyssey 45 Jeanneau 42 DS Carbon Manufacturing Balsa Core Repearing GRP Damage Repearing GRP Modification Bow Thruster Installition Carbon Repearing Infusion Productions Post Curing Application Delamination Repairing Osmosis Treatment Interior Illumination Under Water Light Installition DC Charge System Upgrade Navigation Equipment Managment System Application Deck Port Panel Design DC Consumption Account Engine Remote Control Renew Standing Rigs Stepping / Unstepping Mast Rig Repairing Mast Head Report Mast Foot Report Mast Coller Preparation Chain Plate Check and Report Spartite Application Mast Electric Works Furling Installation Hydraulic System Services Easy Tracing System Production Splicing Works New Sail Supply Sail Winterizing Maintenance Cruising Shut Systems Carbon Composite Works Deck Hardware Valeting Works Conservation Works Winterizing Sail Main Engine Battery Charge Life & Raft Fire Extinguisher Dehumidifiers Service Bilge Cleaning Winter Cover Shrink Wrap Out Board Maintenance Portable Hangar 316L Stainless Steel Bow Protection Plate Mechanic Engineering Technical Service Bonning Electronic Control Services Engine Performance Analyze Warranty Subjects Recommending New Engine Installition Spare Parts Periodic Maintenance Caravel Shaft Brearings Fluiten mechanic seals Offshore Service Mobile Service Project Managment Architect & Engineering Development Projects New Boat Equipment Review Used Boat Review Assessing the Damage Personnel Qualification Review Yacht Transfer 2nd hand boat Nimbus 370 Coupe 13 Mt. Sailing Yacht Princess 85 Sunreef Supreme 68 Prenses 35 Mt. Bougainvillaea 62 Sunseeker 76 Princess 64 Bavaria 2010 Criser 55 Sunseeker Manhattan 60 Ferretti Custom Navetta 33 Catamaran Salina 47 Beneteau 57 Hallberg Rassy 37 Fairline Squadron 680 Hallberg Rassy 43 Cardinal 46 Hallberg Rassy 382 Lagoon 450F Outremer 5X Leopard 27 Mt Look after and winterising works Catamaran Manufacturing HR 352 MODEL SY SUN ODYSSEY 47 CARDINAL 46 S/Y BENETEAU 57 65 ft Sailing yacht 24 M Wooden Gulet Sailing Yacht 12 M Wooden Sailing Yacht 17 M Wooden Motor Yacht Beneteau 361 Sun Odyssey 42i Sun Odyseey 47 Halberg Rassy 352 Sunseeker Predator 74 Halberg Rassy 37 Beneteau Oceanis 393 Halberg Rassy 382 Ferretti Navetta 33 Customline Aluminium 60 feet Custom Sail Benetti 115 X yacht 562 Sunseeker 84 Ferretti 225 Riva rivarama Super Oceanis 42CC Grand Banks Classic Sedan Rivama Super Couach Yachts 35 Wooden Gulet Ferretti Custom Line 33 Custom Wooden Sailing yacht Custom GRP Service Boat Sunseeker Manhattan 70 Apremare Maestro 56 Madera Ribs 16 Mt. Hudson Force 50 13 Mt. Custom Sailing Yacht Beneteau 38 X Yacht 562 Eurotrawler 17.5 Nimbus 370 coupe Sunreef 60 Catamaran 30 M Custom Sailing Yacht Grand Banks 32 Sedan 40 M Custom Sailing Yacht Ferretti Custom Line Navetta 33 Princess 23 M 13M Sailing yacht Fairline 57 Finngulf 44 Gelcoat Restore Composite Repair Hoek Design Refit Farr 50 Refit Yacht Refitting Vacuum Infusion Composite Repairing On The Bow Keel Electrical Control Panels Additional DC Alternator Engine Rectification Custom Product Teak Renewing Mast & Boom Paint Hull Application Non-Slip Surface Mast Replacement Mast Reparing Propulsion Repair Custom Productions Adjustable Davits Dinghy Gallery (Türkçe) Nasıl bir tekne alayım? Names of the Wind – Compass Directions in 7 Languages Turkish names of Aegean Islands Mustafa Pasa The “Grand Wind” in the Gökova Körfezi “Yayla Tepmesi” or the Katabatic Winds of Mt. Kiran Piri Reis in “Bahriye (Seamanship)” “The Ceramic Gulf Explained” Ottoman Sailing Ships (A remarkable book) Turkish Water Uluburun II Skylax: A “Rooster” from Gölköy (Türkçe) Sıcak daldırma galvaniz nedir? (Türkçe) Taksan TTU 500 Torna İlerleme Mekanizması (Türkçe) Cıvatalar için önerilen çevirme momentleri Rudder Repair Radar Mast Polyester Repairs (Türkçe) Dümen Skegi Üzerinde Kapsamlı Onarım (Türkçe) Zehirli boya tatbiki ile ilgili bilgiler (Türkçe) Kum Raspası No.01 Keel Repairing Gallery No.02 Repair of Balsa and Core Osmosis Gallery No. 03 Bow thruster Installation Gallery No.04 Teak Deck Renewing and Mast/Boom Repainting Gallery Steel Keel Preparation Seacock Installition FAQ Procedures How To Obtain a Residence Permit Ports of Entry of Turkey “INSTRUCTIONS TO FOREIGN FLAG PRIVATE YACHTS” as printed on the cover page of the Turkish Transit log. Some details to be considered when sending goods to yachtWORKS from abroad Annotations to the Customs General Declaration Exclusion Clause Turkish Coast, Zones with SCUBA Prohibition Turkish Transit log 2023 Relunch Relaunched 2022 Relaunched 2021 Relaunched 2020 Relaunched 2019 Relaunched 2018 Relaunched 2017 Relaunched 2016 Relaunched 2015 Relaunched 2014 Electrical Works Propeller polish Turgutreis / Bodrum Fuel consumption and range values for motoryachts With sample measurements on a grand banks 36 my trawler data source: powerboat & motoryacht magazine. We all know, we all hear, that consumption, range, noise and engine wear are strongly related to the engine revolutions. The data below show that these relations are beyond the imagination of most of us. All what has been done is that a boat was run with varying engine revolutions and consumption, speed and noise were recorded. 1. Speed of the vessel is the variable least depending on engine revs. When the engine revs are 1000-1 speed is 6.3 knots. When the engine is revved up to 2650-1 , the speed has increased to 15.7 knots. 2. Range, way made good per unit fuel and hourly consumption are highly dependent on the engine revs. As an example, while at 1000-1 revs the hourly fuel consumption is 7.6 liters. At 2650-1 revs this has increased to 84.9 liters. Thus, the hourly consumption has increased more than TEN fold. At the same time, range and way made good per unit fuel has decreased FIVE fold. At this example the “good” revs are 1500 – 1750 revs. Specially the green curves show the “hump” at these revs. Above these revs the range drops more significantly. In summary, whoever runs his/her engines calmly, reduces engine wear, saves money and has the comfort of a larger range. Whoever “beats” the engines harm the environment and themselves..       [1]Original tables from PMY magazine   Boat Grand Banks 36 MY Test Conditions Length OA 11.23 m Temperature 21 ºC Beam 3.86 m Humidity %85 Fuel Capacity 1515 l Wind No wind Draft 1.22 m Sea Condition Very Calm Displacement 12.2 ton Fuel ½ capacity Engines Dual 210-hp Cummins 6B15.9M Water Full Transmission Twin Disc MG 5050 2.54:1 Crew 3 Propellers 28”x25” 3-blade bronze Load Light The speed has been measured as average of two direction by radar. Source:  Powerboat & Motoryacht, January 1996, page 92 322 IMAGES 50 Feet Yacht This 50-Foot Yacht Is Built to Tackle Rough Seas—All the Way Down to Its ‘Indestructible’ Wet Bar Used Yachts For Sale From 41 To 50 Feet The Yacht Life is it! This 50-Foot Yacht Is Built Like a Vessel More Than Twice Its Size [VIDEO] Aluminum Boat Trailer Cross Members Work, Ncert Class 10th English First Flight Chapter 2 Graph VIDEO Zen 50: Luxury Electric Yacht With Solar Panels And Wingsail For Boat Life PERSHING 50 2008 FOR SALE Amel 50 Features 14m FOIL ASSISTED Stepped Hull Aluminium Catamaran Architecture & Design Andrei Rochian Mikelson 43 Cruise Speed Fuel Consumption Surfing Under Spinnaker during Sydney to Hobart Yacht Race 2014 COMMENTS Feel The Burn: The Fuel Consumption Equation Let's look at some actual numbers from a full-displacement trawler in the 40- to 50-foot range: 7.5 knots @ 3 GPH = 2.5 nMPG. If we push for a little more speed the fuel burn changes: 9 knots @ 11 GPH = 0.8 nMPG. Notice that by slowing down 1.5 knots, this boat increases its fuel economy almost 300%. Semi-displacement 50' + Decent Fuel Consumption My sailing catamaran can cruise at 6 knots on about 3 liters per hour and 1 engine or 7 knots on 6 liters per hour with both engines running. This boat comes in a power version that has twin 315 hp engines standard and carries 500 gallons of fuel.It of course can go much faster than 6 knots. One option might be to see if a power cat manufacturer would put a sailboat sized engine or maybe just ... How Much Fuel Does a 50 Ft Boat Use? Uncovering the Truth As a result, it's difficult to generalize fuel consumption for all 50-foot boats. However, to provide an estimated range, we can assume the following average fuel consumption rates for 50-foot boats under varying conditions: 3-5 GPH at idle speed. 10-25 GPH at cruising speed (typically around 20-30 knots) 20-60 GPH at high speeds (over 30 ... 50 Fuel consumption, range Hi all, I'm delivering a 2019 Lagoon 50 to Tahiti from Tortola (BVI) and the owner has no information on fuel consumption, range, etc. The boat holds 1020 Litres in 2 tanks. Any help appreciated. May. live data. lagoon 52 fuel consumption: 22 l/h average. but this is a charter boat and VOLVO 2 X 75 HP. How Much Fuel Does a Yacht Use? An In-Depth Analysis Let's look at an example. For a 70-foot yacht cruising at a moderate speed of 20 knots, fuel consumption could be around 50 gallons per hour. If you're planning a 100-mile journey, at 20 knots, it would take you approximately 5 hours. This means the total fuel consumption for the trip could be around 250 gallons. Tips for Reducing Fuel ... The Real Cost of Buying & Owning a 50-Foot Yacht On average, a 50-foot yacht with twin diesel engines will use about 20-30 gallons of fuel per hour, while a gasoline-powered yacht will use about 40-50 gallons per hour. Routine maintenance such as oil changes, filter replacements, and hull cleaning is part of the overall operating costs and will cost several thousand dollars per year. Boat Fuel Calculator and Consumption List Our Commitment. Blog. Yachts Zenith Nautic S.L. VAT Number: B56880875. Address: Avenida Sant Jordi, 48. Ibiza, Spain. Discover accurate boat fuel consumption with our Boat Fuel Calculator and comprehensive list, helping you plan your yacht charter fuel costs effectively. Trawler Fuel Consumption Quote: On a displacement boat of 40 - 50 ft your best fuel economy will most likely be a bit under hull speed, or about 6 - 8 knots. On Lifeline we travel at 7 knots at 1150RPM, which gives us fuel economy of 8 litres (2 US gallons) per hour or about 3 tenths of a gallon to go 1 nautical mile. Fuel Calculator Welcome to the West Nautical Fuel Calculator. HOW TO USE: To plot points on the map, click with your mouse - this will automatically update the distance table. Then enter the speed, fuel consumption, and fuel cost to determine the total cost of the trip. Example 1: A fast 30m yacht cruising at 20 knots (Lady Amanda) will consume roughly 400-500 ... Average fuel burn rate on different size boats.. Gets rough you use more. sealine 410, length 42 feet, weight @ 10 tonnes with 71Bs did @ 1.1mpg @ 20kns ish. targa 43 length 45 feet, weight @ 9 tonnes with 63Ps did @ 1.2mpg @ 20kns. sealine t50 length 50 feet, weight 18 tonnes with D9s does 0.65mpg at 22kns. Fuel Consumption of Larger Yachts Anyways I remember at 10 knots/1000 rpm both engines/ it was 90 litres an hour. I don't see why not at 7-8 knots, you'd be down to 50-60 litres an hour. You'd want to open them up a couple minutes every hour. At 22 knots it's 400+ litres an hour. Yachts And Fuel Fuel prices can vary but typically costs between €0.80 and €1.30 per litre. Yacht charter, sales and management company West Nautical added: "Fuel costs should be at the top of any yacht owner and captain's minds for two reasons: to minimise costs as well as reduce the environmental impact of burning unnecessary fuel. Yacht Fuel Cost Calculator 3 hrs x 130 gph = 390 gallons. All that is left to do now is add up the total amount of fuel needed and multiply the number with the price per gallon. (7500+390) x $3,5 = $27615. In this example, the final cost of your will set you back a little bit more than 27 thousand dollars. How Much Fuel Does A Boat Use Per Hour? Guide + Examples The amount of fuel a 50-foot boat uses per hour depends on several factors such as the boat's weight, the engine's horsepower, and the speed at which the boat is traveling. On average, a 50-foot boat with a 500-horsepower engine can consume around 50-60 gallons of fuel per hour at cruising speed. Boat Fuel Consumption Calculator A boat fuel consumption is a rate at which the engine on a boat consumes fuel, typically measured in gallons per hour. ... In this example, the fuel is gas so these values are .50 and 6.1 respectively. Finally, calculate the fuel consumption at max throttle using the formal above: FC = (SFC * HP) / FSW . FC = (.50 * 400) / 6.1. FC = 32.786 ... Calculating Boat Fuel Consumption GPH = (0.4 x 300)/ 7.2 = 120/7.2 = 16.6 GPH. 300-hp Gasoline Engine Example. GPH = (0.50 x 300)/ 6.1 = 150/6.1 = 24.5 GPH. Keep in mind that these formulas apply when the engine is making peak horsepower, which usually is near wide-open throttle. Fuel consumption will be decreased at cruising speeds. BoaterInput Fuel Consumption Calculator So, to convert fuel consumption into gallons, you simply divide by the fuel weight of 6.1 lbs per gallon for gasoline and 7.2 lbs for diesel. But this still doesn't get us where we need to be. That is because, unless you are a boat racer, most do not run their engine at WOT 100% of the time. Measuring your Yacht Fuel Consumption per Hour The efficiency of boat fuel is measured in pounds of fuel that are used in an hour per horsepower. In order to be able to read the calculation right, any boat owner should know that gasoline is almost 6.1 pounds per gallon while diesel is 7.2 pounds per gallon. Usually, if you consider that all sea conditions are pristine, the fuel consumption ... Fuel consumption Images: 28. Fuel consumption - real world numbers. I did a little number crunching this morning on fuel consumption and costs and was so stunned by the results that I decided to share. We have a 42' 1986 Chris Craft aft cabin. She weighs in at 36,000 lbs and has been repowered with 330 hp Cummins 6BTA diesels. Boat Fuel Consumption Chart: How to Save Money on Boat Gas Bring the Boat on Plane, then Leave the Throttle Alone. 3. Tweak the Trim. 4. Make Sure You Have the Right Propeller. 5. Keep the Bottom of Your Boat Clean. Last Updated on November 3, 2023 by Boatsetter Team. Boat fuel consumption can be a rather significant expense, and it's one that goes up as gas prices rise. Sailing Catamaran Fuel Consumption Data From Owners! Catamarans are more (fuel) efficient than a monohull (regular sailboat). During calm conditions, while powering under one engine, fuel consumption is between 0.3 gallons per hour (gph, of diesel) and 1.1 gph according to the data collected. Below I have gathered fuel consumption data from catamaran owners. Show entries. Model. GPH single engine. Fuel Efficient Yachts: From Solar Power To Modern ... MJM claims their mantra during the yacht building process was "Twice the fun, half the fuel" - and it shows. With a choice of twin or triple Volvo Penta IPS 600's, this boat delivers both superior stability and advanced performance. At slower cruising speeds (8 knots) she burns an unparalleled, class-leading 2.4 gallons per hour. Fuel consumption and range values for motoryachts As an example, while at 1000-1 revs the hourly fuel consumption is 7.6 liters. At 2650-1 revs this has increased to 84.9 liters. Thus, the hourly consumption has increased more than TEN fold. At the same time, range and way made good per unit fuel has decreased FIVE fold. At this example the "good" revs are 1500 - 1750 revs. catamaran gulet powerboat riverboat sailboat trimaran yacht