A new type of offshore trawler for use in Yamaguchi Prefecture (1st report)—The development concept and longitudinal motion in regular waves

Abstract

Two newly designed trawlers (Yamaguchi Maru No. 1 and Yamaguchi Maru No. 2) of 60 GT were completed in February of 2001 for use in the restricted trawl fishing area between Japan and Korea. In this trawl fishery, trawling is done with two boats working in tandem. The trawlers are presently doing various tests in the offshore fishery. We herein introduce the development concept of the new type trawlers built as models for the improvement of the offshore fishery in Yamaguchi Prefecture, compute the longitudinal motion (heave and pitch) of the trawlers in regular waves, and discuss these characteristics.