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  • By Peter D’anjou
  • Updated: July 1, 2002

js9000 sailboat

List the characteristics you want in a sportboat–in addition to speed–and that’s what Swarbrick Yachts promises with the JS 9000: lifting keel for trailering, easy to singlehand or race with a crew of three or four, self-tacking non-overlapping jib, asymmetric chute tacked to the bow, no backstay, and good stability. Add to that the pedigree of designer John Swarbrick, the brains behind the 12-Meters Kookaburra I and II and Chris Dickson’s Whitbread 60 Tokio, and it’s easy to get excited about a $26,500 speedster that comes fully rigged with Spectra running rigging, die-form standing rigging, aluminum mast and boom, and Dacron mainsail and jib.

The boat is built to European CE standards with gelcoat over vacuum-infused vinylester resin and glass skins surrounding a Herex H80 (PVC foam) core for both the hull and deck. The keel is a galvanized-steel strut with lead bulb all encapsulated in fiberglass. The boat doesn’t have a PHRF rating yet, but its IRC rating (1.050) puts it right behind Mumm 30s and J/92s.

Consistent with the builders intention of creating a worldwide one-design class; 16 boats are already on order in Europe and the North American distributor, Sam Birger, hopes to be able to bring four into Newport, R.I., this summer. The boat’s price, subject to exchange rate, excludes spinnaker and trailer.

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Long and Slim, what about this one?

Discussion in ' Boat Design ' started by D'ARTOIS , Oct 25, 2005 .

D'ARTOIS

D'ARTOIS Senior Member

Any comment? This is a JS 9000 The beam is only 1.72 (from: clubracer.be)  

Attached Files:

Sailing Anarchy is singing her praise, the new invention of Australian Naval Architect John Swarbrick. An ultralight, 1500 lbs hull with 1000 lbs in the (very) deep keel. Price? Under 30K!!!!!! (pictures and photo from SA)  

JS9000_2.jpg

Js9000_3.jpg, js9000_4.jpg.

cyclops

cyclops Senior Member

That IS a "Gentleman's Sailboat". Finally, the sail people are getting it right. It looks proportioned for a human being. And I love 2 seat "Gentleman's Race Boats". I would try her in a heartbeat.  

Doug Lord

Doug Lord Guest

Js 9000 Great boat! But I wonder what a boat like her would do with 40% less ballast and a canting keel- or some other form of movable ballast? Would she still be a Gentlemans Sailboat" ? Huh?  

sharpii2

sharpii2 Senior Member

D'ARTOIS said: Any comment? This is a JS 9000 The beam is only 1.72 (from: clubracer.be) Click to expand...
Fact is Bob, that you are completely right - however, this is a fun boat. Nothing serious, no straing attached, a daysailor, ans any water that is deeper than the 7 or 8 feet, can host this boat.There are more people offering funsailors for a much higher price. If you ask me, "shall we go to England?" - I would say "why not?" ( a 110 NM from Dutch shore to e.g. Southwold). So, I am not that pessimistic. We know three of a kind ( I don't play poker, sometimes maybe) of sailors. 1) the funsailors (society sailors) - they don't take anything serious; they complain about the quick abrasion of their Dubarry's; 2) the racers - total different environment - rules, ratings, protests, gossip; 3) the serious yachtsmen - for them, sailing is more than a lifestyle rather than a hobby. I know already quite a few in this forum who are the real addicts, who are - or could be - the generation populating our future waterworld. Bob, I f I have a chance, and I would like to thank you for the kind words you have said in another thread/post, again, if I have a chance you will be very welcome on my boat and I am pretty sure that you will finally belong to the last category as so many of the Forum - whether or not registered. The JS9000 might be just a station in between the serious beginner, later on becoming a serious engaged admirer of yachting. The bad things of the sea, you will forget reasonably quickly, but remember that beautiful morning when you rounded Cabo São Vicente, sailing along the green and glass-clear sea along the Algarve. Sailing Bob, is living in another world, another planet.  
3 posts and it modified so much, no one would reconize it ever again.  
That's not too bad, it happens all the time....  
" I love this boat. Do the following 20 changes to it. "  

Skippy

Skippy Senior Member

Reminds me of Francis Chichester's Gypsy Moth IV: narrow beam, plum bow/sharp forefoot. Developed a terrible lee helm when heeled.  
It is a well established fact that Sir Francis did not have a good word for the Illingworth/Camper & Nicholson exercise. However, he made it, received his knighthood and what can you say more? The JS 9000, as one claims, sails very neutral on the helm - of course this is 2nd or 3rd hand testimony, I have it from the corresponding sites, ok, you have to find out the truth hen you can sail her yourself. For the moment, as I see it, it's a fun boat - unless somebody makes something more out of this design.  
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I have to agree with Sharpii on the keel being a hassel for trailer types. A break 18 " down should be doable once the loading at that point is known from the designer. Otherwise, the one time emperical overdesign is in order. A " lap " cutting, or a tongue and groove of robust dimensions. About 12" long and filling any center hollows with heavy cloth and Epoxy. Thru bolted with 3 - 3/4" bolts should preserve all the handling and safety originaly designed in. That would allow removal or a jump over the side with a lifting rope. The keel could then be lowered on the trailer to prevent chafing the hull finish. Self locking nuts and spares are obvious. Obviously, 1 thru bolt at the top would ALWAYS be left in , tight or loose.  

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Made in Australia and using high tech construction, about 3/4 of the weight is in the 1500 pound bulb in the bottom of the keel.


JS 9000 sailboat

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  • Sailboat Guide

ISO Admiralty 30 or JS 9000

  • Description

Seller's Description

ISO either model, retractable keel, Boat must be in Canada or US.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

  • SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

  • D: Displacement of the boat in pounds
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Self tacking furling jib. Asymmetric spinnaker flown from the fixed bowsprit. Spinnaker Area: 612 sq.ft./53 m2

This listing is presented by SailingAnarchy.com . Visit their website for more information or to contact the seller.

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    Beam:  6'    Draft:  7'

js9000 sailboat

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