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Gennaker size

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Lieutenant Commander
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Joined: 10 September 2009
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    Posted: 23 May 2014 at 20:56
What size gennaker on a hanse 350.
Hanse 350#358 Stingray
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Brufan View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brufan Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2014 at 19:39
It depends of what you call Gennaker.
As far as I know about it varies between 58 m2 for a super flat Code 0  (a bit more with a sturdy bowsprit) to approx 82-84 m2 for Assymetrical Spi.

Bruno

hanse 355 - 57

S/Y Spicy Ginger

White hull, 2 cabins, Volvo D1-30, Selden rig, removable mainsheet track system (modifications done now), Simrad-Jefa autopilot.
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Martin&Rene View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Martin&Rene Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2014 at 22:16
This was the advice I got from Steve Goacher of Goacher Sails at Windermere when I purchased my spinnaker in 2010.  As per his advice, we went for about 70sqm and are very pleased with it.
 

Martin,

A full size kite for a 341 is approx 78 sq m.

An asy of this size would be a good downwind sail up to about a force four for a crew of 2 but above F2 reaching ability of any kite is limited purely on righting moment.

As an example if you were to go 20% smaller than this ,you would have a sail size which might be a good reacher in 20knts

The terms Asymettric, genneker,cruising chute all describe the same generic sail.Like a conventional kite ,greater luff projection gives better deep running and narrower shoulders give greater close windedness.

So if you make it too small it will be hard work to go deep in any conditions and being a displacement boat the gains will be made in sailing a shorter course.

.

Although its cheaper to make sails with cross cut centre sections ,in the long run the gains made in luff stability are well worth the cost of an all radial sail.Once the sails start to stretch luff control is lost.

I would suggest you could go up to the 78sq m or maybe drop down by 10%dependant on intended usage.

Cloth weight -,for use up to top of a F4 1oz would be fine and more useful than going to say a 1.5 oz for use in the light.

Basing a price on 78sq m and 1oz Bainbridge Airex 900( just over an ounce) all radial, all seams glued and sewn, all radial patches,luff line 1340.00 ex vat price pro rata on area

Snuffer would be 180 ex vat

 

Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout & shallow keel, normally based in Scotland
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