Study of Purse Seine Fishing Ship Trimaran Seakeeping with Axe-Bow and Without Axe-Bow Model Using Computational Fluids Dynamics

Abstract

Maluku waters are dominated by extreme weather conditions with wave heights of 1-5 meters. Purse seine fishing
vessel is one type of fishing vessel that has very poor transverse stability. One way to improve the stability of the
ship is to change the shape of the monohull ship to a ship with a trimaran hull type. This research was focused on
examining the movement characteristics of purse seine fishing vessels with trimaran hull type with Axe-Bow
modification on the bow and without Axe-bow, through computational fluid dynamics. The use of Axe-bow on
trimaran is able to significantly reduce RMS Pitch, which is an average of 13.35% smaller when compared to Trimaran
without Axe-bow. On the RMS Heave Trimaran Axe-bow can reduce an average of 5.27% if the Trimaran is without
Axe-bow. Furthermore, the Trimaran Axe-bow is also able to reduce the RMS Roll by an average of 3.98% compared
to the Trimaran without Axe-bow. The results of this study can provide an initial description of the advantages of
using the Axe-Bow on the Purse seine fishing trimaran ship.