Hi Grob
Wasn,t the volume calc and getting enough displacement in your 4 hull design the biggest problem ? -estimating a 4 ft hull dbl ended does not provide much ,-each hull need to support a crew if they stepped aboard at one end .
Carl,
No it wasn't much of a problem, having four hulls just means you have to make them relatively short and fat, just like Bill was implying.
As for it taking the weight of someone standing on one end, four hulls are an advantage as all the bouyancy is in the corners. In fact comparing it with the A class 18ft cat it can carry about 10% more longitudanal/pitching moment, even though its only a 16 ft boat.
Also four short fat hulls give less wetted surface area than two long thin ones.
All the best
Gareth
www.fourhulls.com 
