Mathematical modeling of roll motion of a catamaran in intact and damage conditions in beam waves

摘要

The roll motion in regular beam waves of two catamarans, one with rounded lines and the second with knuckles was studied both starting from upright equilibrium position and in the presence of a list due to asymmetric loading or asymmetric flooding. The simulations obtained with two mathematical models, one based on a monohull “roll” approach and the second based on a twin hull “heave” approach were compared with experimental results relative to several values of hull separation. The results highlight the mechanics of roll motion of multihull ships and the effect of asymmetric flooding.