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BBSCFaithfull View Drop Down
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    Posted: 14 Feb 06 at 11:04am
Hi guys, following the bout of light winds we have had at my club. We have had to sail in displacement mode for a fair while. I was just wondering if it was possible to sit too far forward in the boat or if it doesnt matter. A fellow sailor said that we were too far forward ( Transom clean out of water!) and that doing so when a gust hit we were driving the boat towards the fish and not forwards is this true?
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 11:27am
It depends on the boat. Although you can sit too far forward on almost any boat - see what happens when two people sit on the bow of a 29er for instance:-). I'm not sure about the driving towards the fish theory though.

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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 11:30am

Originally posted by BBSCFaithfull

Hi guys, following the bout of light winds we have had at my club. We have had to sail in displacement mode for a fair while. I was just wondering if it was possible to sit too far forward in the boat or if it doesnt matter. A fellow sailor said that we were too far forward ( Transom clean out of water!) and that doing so when a gust hit we were driving the boat towards the fish and not forwards is this true?

What class?

In a 2 person skiff one in front of the mast and the other by the shrod is probably about right.

In a shngle hander usually as far forward as you can get and still be able to steer properly and see the sail.

Rick

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Jon Emmett View Drop Down
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Post Options Post Options   Quote Jon Emmett Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 11:38am
Assuming you are talking about a 4 tonner you probably cannot get too far forward if it is drifting condition: put the crew in the play pen and helm as far forward as the tiller extension allows...
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Post Options Post Options   Quote BBSCFaithfull Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 11:39am
Cheers Guys, it's a 4k. We will bear that in mind
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Post Options Post Options   Quote Bumble Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 11:54am

For displacement sailing a vessels speed potential is normally calculated (roughly) as a waterline length to sail area ratio. Ive forgotten the name of the ratio but it has been in use for a long time and while doesn't take in all the factors is the best rough performance guide there is.

Too far forward and you loose waterline length which in the light stuff will equal speed. Further, I think the transom dragging factor is often overstated - although L4000 does have a big transom...... 'does my transom look big in this?......yes!'

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Post Options Post Options   Quote Bumble Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 12:43pm
For the scorpion the best thing is as a helm to sit where ever you feel most comfortable. Then get the crew to dislocate some joints and roll themselves into the smallest most uncomfortable ball possible. They then must sit to leeward in the little cold, dirty, smelly puddle of water up against the bulk head. If they are going to complain then you need to preempt this with a comment about how good the trim looks.
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Matt Jackson View Drop Down
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Post Options Post Options   Quote Matt Jackson Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 1:10pm

I thought wetted surface area was more important than waterline length if it's a drifter. Doesn't waterline length only matter in disturbed water?

In the Contender we tend to sit on the 30cm triangle of deck behind the mast and between the lowers, (on the cleats... ouch) and hug the mast/lowers (whilst desparately trying to stop the amount of rake you're carrying from centrering the boom), and holding it against the shroud (without putting any weight on the boom which colapses the leach) with one arm and holding your other at full stretch so you can still hold the extension.

Yep, a Contender in light wind really is a joy to sail.

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Post Options Post Options   Quote Sumo Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 1:22pm
The key is to get the transom out of the water enough to have smooth flow, but more importantly keep rudder movements to a minimum and keep still so that you keep the air moving over the sails. It is quite suprising how much speed you can pick up by concentrating in the light stuff.
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Post Options Post Options   Quote redback Quote  Post ReplyReply Direct Link To This Post Posted: 14 Feb 06 at 2:01pm

4ks go best with the crew in the front and if you are heavy its the only way to get the transom out of the water.  Crew up front has the additional advantage of giving some weather helm which is a must in the light stuff.  Don't worry about not having all the waterline length, by the time you are going fast enough for that to be a factor the crew will be standing on the rack.  Watch out for power boat wake though.

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