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Gennaker

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kurio99 View Drop Down
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Post Options Post Options   Quote kurio99 Quote  Post ReplyReply Direct Link To This Post Topic: Gennaker
    Posted: 07 May 12 at 2:58am
Have a new boat that has asymmetrical that is cut more like a gennaker rather than a spinnaker.  Took it out today in a light wind (4 knots).  The flatter cut enabled the boat to achieve its best speeds on a full beam reach.

Here's my question...  Can I tack with a gennaker?  Or is a gybe always faster and more effective? 
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Mister Nick View Drop Down
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Post Options Post Options   Quote Mister Nick Quote  Post ReplyReply Direct Link To This Post Posted: 07 May 12 at 8:57am
I'd gybe it personally. I'd imagine that you'd capsize or have a lot of problems in any sort of reasonable breeze if you tried to head up far enough to tack. A gybe would be much safer and less traumatic. Also, you've got to think about VMG. You shouldn't be going down the run on a beam reach because whilst your speed will be good, your VMG will be absolutely attrocious. Tacking will only make that worse. What kind of boat is it by the way?
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kurio99 View Drop Down
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Post Options Post Options   Quote kurio99 Quote  Post ReplyReply Direct Link To This Post Posted: 07 May 12 at 11:04am
It's a Canadian boat, called a CL Stealth.  Similar to the RS100 in many ways.
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JimC View Drop Down
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 07 May 12 at 11:32am
A gybe is always much faster than a tack (unless you fall in) because the boat remains under power almost right through the process instead of slowing to go head to wind. Just for the fun of being able to say I've done it I have tacked a boat with a *pole kite*, and I don't think it takes much more than ten times as long as a gybe...

If you tack an asymmettric with the kite up then the smallest of snaggles geting the kite round is almost guaranteed to tip you in.

Edited by JimC - 07 May 12 at 11:33am
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r2d2 View Drop Down
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Post Options Post Options   Quote r2d2 Quote  Post ReplyReply Direct Link To This Post Posted: 07 May 12 at 2:06pm
Originally posted by kurio99

It's a Canadian boat, called a CL Stealth.  Similar to the RS100 in many ways.

sounds interestin - got any pictures?
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sargesail View Drop Down
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Post Options Post Options   Quote sargesail Quote  Post ReplyReply Direct Link To This Post Posted: 07 May 12 at 2:57pm
Looks OK:


IF heavy


Specifications:
Length :14'6" 4.41 m
Beam :5'8" 1.72 m
Draft :c/b 3'6 1.05 m
Draft :5" 13 cm
Weight :170 lbs 77 kg
Main Sail:92 sq.ft. 8.55 sq.m
Spinnaker:120 sq.ft. 11.15 sq.m
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kurio99 View Drop Down
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Post Options Post Options   Quote kurio99 Quote  Post ReplyReply Direct Link To This Post Posted: 07 May 12 at 6:48pm
Have to agree on the weight.  A tad overbuilt.  I could ram and sink freighters with this one.  The aluminum fins could decapitate endangered ceteceans without a dent. 
 
That said, I had a fun sail on the weekend.  A piddly 4 knots of wind, but the big genny gave her some legs.  Smooth flow off the back with the transom barely skimming the water surface.  Any other boat, I would have be crocheting and steering with my feet for excitement.
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