A design procedure is developed on the concept of an effective hull form.

Catamaran hull form design. The twin-hull design was first observed by Europeans in India in the late 17th century but it was actually invented by South Pacific islanders. The most important catamaran design hull shape factor is the Prismatic Coefficient Cp. We want asymmetric water planes and a reasonably flat rocker to minimise pitching.

The commonly accepted way is to design longitudinal and transversal metacenter heights equal. 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. This project will help the development of using catamaran hull forms in ship industry in our country.

Developed in collaboration with Incat Crowther ST Engineering has utilised the latest generation Wave Piercing Semi-SWATH hull form where the vessel is able to transit at high speed with low hull motions. A hull too skinny will have higher drag from skin friction. A flat run aft in cross section will promote planing or semi planing at speed.

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. The commonly accepted way is to design longitudinal and transversal metacenter heights equal. Create two new asymmetrical catamaran hull forms using the S-NPL series round bilge catamaran hull forms.

The Pentamaran has been designed to reduce drag as much as possible and tests have proven it offers significant improvements compared to conventional hull forms such as mono-hulls catamarans and trimaran. A catamaran designer by virtue of the two hulls is not constrained to produce a hull that stays upright by itself. It consists of two parts the first part is the design of an effective hull form for the demihull of a catamaran the second part is the computation of the demihull geometry from its effective hull.

The basic form is one of a fine entry bow and a flat box like stern section with 850mm maximum demi-hull beam giving a. Design Specifics the SPEED. 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.