Hydrodynamics Comparison of V-Shaped and U-Shaped Hulls Of 5 GT Fishing Vessels Based on the Characteristics Of Southern Java Waters

Abstract

The fishery sectors in Indonesia have enormous potential including capture fishery potential of US$ 15.1 billion/year, marine aquaculture potential of US$ 46.7 billion/year, and aquaculture potential of US$ 10 billion/year. With abundant marine natural resources, the development program of Indonesia should notice the increasing number and quality of fishing vessels. A good fishing vessel design has to consider the aspects of efficiency, feasibility standards, and fishermen's safety. To achieve feasibility and safety standards, the design process has to concern the characteristics of the waters where the fishing vessel operates. The Southern Java waters are waters that have high waves with Hs ranging between 1.5 to 2 m. Therefore, a hydrodynamic comparison of the hull between the V-shaped and U-shaped was carried out, including the evaluation of resistance prediction, stability, and seakeeping to obtain the best vessel design criteria. The investigation was carried out using the numerical method with the Computational Fluid Dynamics (CFD) approach. The results showed that the V-shaped is better than the U-shaped because it produces lower resistance while the stability and seakeeping performance are better.