Wayne.B ) writes:
On Fri, 08 Oct 2004 07:25:53 GMT, Morgan Ohlson
wrote:

Boats with a Cat rig have a tendencie towards max beam and max draft closer
to the bow.

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Since the center of effort (CE) is further forward on a cat rig, the
center of lateral resistance (CLR) needs to be further forward also in
order to keep the boat balanced.


I think if you'll look at a New England style cat boat you'll see than it
has a very large sail with a long boom so the CE is further aft. The keel
is about where it would be on any other hull. the mast on a laser is
stepped in the usual position. in fact the lack of a jib moves the CE
of the sail plan further aft so the mast can stepped further forward.
on small boats just put the daggerboard under the CE no matter where the
mast is stepped. On a recent design I moved the cat rig mast forward so the
centreboard would not be in the way in the cockpit. With the optional
ketch rig the centreboard was not in the way with the mast in the more
normal position.
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