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.

Catamaran hull form design. Develop catamaran hull form using the existing S-NPL series round bilge model 4b. Displacement hull forms useful for load carrying but slow speed. 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.

You call that a catamaran you fool. A catamaran designer by virtue of the two hulls is not constrained to produce a hull that stays upright by itself. The beam between hull centers is named B CB Figure 4 and remember that the overall length of the hull is L H.

Lengthbeam ratio of the catamaran LBRC is defined as follows. So you need to be aware of how the shapes are changing in the other two planes as you manipulate any one of these three or all three globally as is now possible with computer modelling. Create two new asymmetrical catamaran hull forms using the S-NPL series round bilge catamaran hull forms.

The beam between hull centers is named B CB Figure 2. A hull too skinny will have higher drag from skin friction. Obviously this formula doesnt apply to catamarans.

Even when not planing they will travel much faster than what the hull. A fine entry will minimise slamming in short steep waves and throw less spray. Chine hull form is used intended to design a semi-displacementsemiplaning craft.

But in fact you want a high Cp for high speeds. The commonly accepted way is to design longitudinal and transversal metacenter heights equal. Catamaran sailboats are common but catamaran ferry designs are quickly growing in popularity due to their unique advantages.