An investigation of the relationship between sea state induced vessel motion and cod-end selection

摘要

The relationship between sea state induced vessel motion and cod-end selection is investigated. The paper is divided into three parts. Part I reports on sea trials to investigate the relationship between vessel motion and cod-end dynamics. By comparing the average period of longitudinal cod-end pulsing to the most important cyclic component of the tension in the trawl warps and the most important cyclic component of the linear accelerations of the fishing vessel, it is established that the pulsing of the cod-end is a response to sea state induced vessel motion.