A Study on the stability of a crab trap fishing boat with water tank experiment

Abstract

According to the recent statistics of marine casualties in Korea, fishing boats are more likely to be ended inthe casualties, and small fishing boats especially cause much more accidents in sinking and capsizing thanany other big vessels. These casualties were mainly produced from the ignorance on the lack of own shipstability. From this view, this study aims to analyze the characteristics of stability on the crab trap fishingboat receiving transverse wave by means of carrying out the water tank test. The rolling angle of the modelship was affected largely with the displacement and the wave period of it, and the trends were shown that themagnitude of the angle was proportional to the displacement, but inversely to the wave period. And the waveheight had effect on the rolling angle just in the specific range of the wave period. The force of steady winddidn t have influence on the rolling variation significantly.Keywords: Marine casualty, Crab trap fishing boat, Stability, Stability criteria, Rolling motion