I was toying with the idea of using an elongated and narrowed planing hull form that could be built with sheets of marine ply and combining SG techniques with Cold Mold systems.

Catamaran hull form design. A fine entry will minimise slamming in short steep waves and throw less spray. When planing a monohull will exceed its hull speed. Here we use the height from buoyancy to metacenter commonly named BM.

Design Specifics the SPEED. A fat hull will have high form drag. I found that this interference caused significant drag at certain speeds - in fact up to 20 when compared to hulls at an infinite spacing.

When you manipulate the hull form youre adjusting the lines in three planes waterplanes plan view buttocks side view including the keel rocker and the section shapes. This is a measure of the fullness of the ends of the hull. The catamaran is a ship design with an interesting history.

A design procedure is developed on the concept of an effective hull form. A hull too skinny will have higher drag from skin friction. Planing hulls designed for speed but power requirements are too high.

Here we use the height from buoyancy to metacenter commonly named B M. Create two new asymmetrical catamaran hull forms using the S-NPL series round bilge catamaran hull forms. I can see how a deliberate ignorance of the first principles of marine design will get you noticed but I always presumed that tarring and feathering would follow.

The design is the latest from the BMTs team of expert naval architects and engineers who have been at the forefront of innovative hull design for 34 years. When I was a design student I took the opportunity to do some tank testing on catamaran models and I investigated the drag from the wave interference between the hulls. Develop catamaran hull form using the existing S-NPL series round bilge model 4b.