Roll Stabilization for Small Fishing Vessels Using Paravanes and Anti-Roll Tanks

Abstract

Excessive roll is a constant source of discomfort and danger for small fishing vessels. The paper describes two methods of reducing roll: paravane stabilizers and passive stabilization tanks. In particular an analysis is presented of the possible hazards of paravane use in severe seas, based on the capsize of a small fishing vessel after the loss of one paravane. Anti-roll tanks, as an alternative to paravanes for some small vessels, have been proposed and successfully tested on three boats. The design and testing at model and full scale of such a system is described. Full scale tests were carried out on three sister vessels, two with tank systems and the third with paravanes.