I think with less than 100% volume, you would drive the hull under
and eventually flip. See
http://www.youtube.com/watch?v=QP-67_sPgGc
http://www.youtube.com/watch?v=NPEcZR_PvWo
I believe Sodebo and Idec (sisterships) are approximately 200%
volume on the outrigger. They show that even with such a high
volume and surface piercing hulls, they can still get driven under
the waves. Idec recently flipped on a transatlantic record
attempt.
Cheers, Paul
On 20/09/2011 5:19 a.m., bjarthur123 wrote:
rob-
what is your design criterion for volume of the lw hull? i assume it is substantially more than 100% displacement of the whole boat.
i ask because i wonder whether it might be beneficial to have it <=100%, so that one could never fly the ww hull. impossible to flip sideways then, and a good indicator of when you're pushing it too hard.
weta floats work like this. <100% and wave piercing. surprising how difficult it is to flip them, though it does happen.
ben
--- In harryproa@yahoogroups.com.au, Rob Denney <harryproa@...> wrote:
> BD's lee hull is huge compared to any trimaran lee hull, and plenty big
> enough for the immersions it sees.