I see early tris Piver etc seem to have essentially triangular sections and often no or very small keels centreboards - presumably the sharp hull form provides sufficient sideways resistence in this case.

Trimaran hull shape. Amas are the outer hulls of a trimaran sometimes referred to as outriggers or the smaller hull of a proa. The first vessel was launched in June 2018 by owner Andrew Fennell. Typically a trimaran hull is the principal displacement supporter as well as the main accommodation area.

In this study only the main hull of the trimaran is modified using self-blending method. Trimarans have two sweet spots. It notes that the trimaran hull shape offers greater potential and flexibility for the ships layout while making the voyage more comfortable and pleasant for passengers.

EXLH model 1-F10361VD Engine Type. If we widen the hull at the bottom the sides can become more vertical and this more box-like section can further lower the wave-making compared to the Vee-section we started out with as it. 30 ft 0 in Minimum Draft.

LEEN hulls A specially developed design for high-performance vessels. Is it possible to achieve an ideal shape using plywood. The more you make the section shape into a deep V or a broad U with tight corners as opposed to a semicircle the more wetted area you have.

The effectiveness of this hull shape is ideal for cruising cats as well as racing boats and we have been using it on a wide range of designs including the new Raku series of cats. You will often hear trimaran designers talk about wetted surface and hull shape in relation to their sailboats. As for original hull the outlines of cross sections 08 are composed of two straight lines and the width of the knuckle line is the same.

A trimaran is a multihull vessel designed to reduce wave-making resistances at high speeds. Also just ran across this site that has some similar very detailed explorations of multihull design concerns and solutions and general trendsmostly racing catamaran oriented but theres some really meaty stuff about hull shapes that applies to tris too So lets look at modern bow shapes. 6 ft 2 in Dry Weight.