Optimization Of The 30 Gross Tonnage Fiberglass Fishing Boat Hull To Obtain Optimal Main Motor Power

Abstract

The design and production of 30 gross tonnages (GT) fiberglass fishing boats do not yet have technical and economic accuracy. The purpose of this study is to design a 30 GT fiberglass fishing boat hull model to find the minimum speed of the ship, the optimum power of the main motor of the ship and the appropriate gross tonnage of the ship. The method used in this planning is optimization of preliminary design and optimization of design approach to obtain optimal ship size and main motor power. Based on the results of ship planning, the product design is obtained in the form of drawings of lines plan and general arrangement with the main size of the ship (Loa) 20.50 meters, ship width (B) = 4.27 meters, deck height = 18.75 meters and draft = 1.20 meters. Optimum main motor power (BHP) = 150 Hp, with service speed (Vs) = 10.5 knots. The conclusion meets the appropriate gross tonnage of 30 GT based on the general arrangement planning which has good ship stability with a rolling period of 80.58 seconds.