The wetted surface ratio is relatively high compared with planing monohulls of the same displacement.

Catamaran hull resistance. This catamaran is the working boat whose speed is about 8 knots. The model was towed with Froude numbers ranging from 035 to 065. Newer Lagoon catamarans use polyester and vinylester resins also infused with balsa cores above the waterline and solid below.

Zips 1995 proposed using a multiple-regression analysis of test data intended to predict the resistance of hard chine catamarans with hull parameters in the scope of the 1989 VWS Hard Chine Catamaran Hull Series. 134 1992 pp. Transactions of the Royal Institution of Naval Architects Vol.

34 Molland AF. The resistance of a catamaran is mainly affected by the wetted surface ratio the slenderness ratio and the hull spacing sL. The below-water-level hull form influences the fluid flow characteristics around the ship which either increases or decreases the total resistance.

Prismatic coefficient C p. Primary hull construction is resin-infused vinylester with a balsa cored hull and deck. This study focuses on developing a new hull form by using the Lackenby Method to modify an existing hull form in such a way that.

Resistance data readers are referred to the above report. In my opinion with low speed hull is not the most important. But there still lies a conspiracy about the resistance.

C p D A m L WL. C p is typically between 055 and 064. A catamaran hull has less volume than an equal size monohull.