Hi Grob,

IGES seems to be the most universal format for surface data. Multisurf, Rhino ICEM and many CAD systems support IGES.(you are using Pro-E?)

Modeling is a nice way to get hydrostatics on a hull.

Without CAD maybe... for catamarans maybe bonjean curves or longitudinal metacenter vs displacement would be useful.

Cool project as long as nobody gets mad.

Talk to you later
-colin