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Masthead Bouyancy

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JimC View Drop Down
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    Posted: 02 Feb 07 at 4:34pm
Originally posted by English Dave

thrown 20 yds from the Cherub?

Yep. neither of us had contact with the boat.
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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 07 at 6:47pm

Originally posted by JimC

Originally posted by English Dave

thrown 20 yds from the Cherub?

Yep. neither of us had contact with the boat.

Thrown 20 yards ... come on 3-4 yards perhaps ...

Even on the 18ft'er vids they don't go that far on a major wipe out ...

Rick

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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: 02 Feb 07 at 7:16pm
*I* never said 20 yards. 3 feet is quite enough if the boat is drifting faster than you can swim.
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Post Options Post Options   Quote boatshed Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 07 at 7:34pm

By the time both crew surface, make contact with each other and check where the boat is, it is very possible to end up 20 yards away.  

Maybe mast head floats are ok when used on small inland waters with rescue cover.   But out to sea in a decent breeze, in a boat where you may have to look after your self, then no way.  And a single hander with a mast float in these conditions - mad.

 

Steve
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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 02 Feb 07 at 7:49pm
20 yards seperation sure - but thrown 20 yards ... no way ....
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CurlyBen View Drop Down
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Post Options Post Options   Quote CurlyBen Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 07 at 10:01pm
Originally posted by English Dave

From memory the Stratos has an open transom but also has "flood tanks"which enable the boat to sit lower in the water when on its side. The idea being that it would be easier to climb onto a lower centerboard. As soon as the boat is righted the water drains from these tanks into the cockpit and out the back.


Yep. They make it hard to right and also have stuctural issues according to some people I've spoken with if those tanks are allowed to completley fill - the inner bulkheads can't stand the pressure and so leak. From my experience of Stratos' I don't think it's unlikely. I've also righted a Stratos and had to hang off the trap wire at full stretch for about 5 minutes whilst waiting for the water to drain from the tank. I really don't like the idea of having enclosed water free to move around in a boat. If the buoyancy isn't needed don't enclose the space.
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Post Options Post Options   Quote Matt Jackson Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 07 at 12:58pm
Back on thread... our training Wayfarers have a triangular bouyancy 'pad' of closed cell foam sewn into the head of the sail which measures about 400mm along the luff. Not sure how effective they are though.
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CT249 View Drop Down
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Post Options Post Options   Quote CT249 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 07 at 9:13pm
Originally posted by JimC

Originally posted by English Dave

You have mentioned this before on other threads, Jim and I'm curious to know what boat it was that got away from you.

The worst experience was in a Cherub, but I've noticed that a Canoe will get away too. Bethwaite says that he started making sure his boats inverted by design after two fatalities in Port Philip bay in Aus, I think in Moths. But any boat with sidetanks will blow away reasonably fast : try it in a Force4 in anything you care...


I think I've read through every issue of all the sailing mags in Australia in that period, and yet I have never seen the slightest reference to those fatalities apart from those made by FDB. Frank is a man of honesty and integrity, of course, but until more evidence comes to light it may be asked whether this was a rumour he heard, rather than a fact.
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Post Options Post Options   Quote I luv Wight Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 07 at 9:19pm
Originally posted by Medway Maniac

If boats were just designed with much less buoyancy off the centreline they'd float lower on their sides when capsized with lots of hull immersed, and

a) drift much more slowly,

b) allow you to climb on the c'board more easily, and

c) have less tendency (or need) to invert.
 



The Optimist is designed exactly like this - easy to right, easy to get in, stable when righted (full of water), but of course then you need a big bucket!

Edited by I luv Wight
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MRJP BUZZ 585 View Drop Down
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Post Options Post Options   Quote MRJP BUZZ 585 Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 07 at 9:37pm
Originally posted by I luv Wight

Originally posted by Medway Maniac

If boats were just designed with much less buoyancy off the centreline they'd float lower on their sides when capsized with lots of hull immersed, and

a) drift much more slowly,

b) allow you to climb on the c'board more easily, and

c) have less tendency (or need) to invert.
 



The Optimist is designed exactly like this - easy to right, easy to get in, stable when righted (full of water), but of course then you need a big bucket!


Well theres the answer lets all get oppis

Josh Preater

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