Portal de Periódicos da CAPES

HULL OPTIMISATION OF FISHING TRAWLERS USING ULSTEIN X-BOW AND BILGE KEEL

2022; IJEAST; Volume: 7; Issue: 2 Linguagem: Inglês

10.33564/ijeast.2022.v07i02.032

2455-2143

Kunjachan T Basil, C P NajdanWaris,

Maritime Transport Emissions and Efficiency

The most recent ships incorporate a number of significant design enhancements to improve the vessel's seaworthiness. Ulstein X-bow, bulbous bow, bilge keel, stern wedge, stern tunnel, spray rails, and others are some examples. Increasing the vessel's speed while lowering energy consumption necessitates lowering the vessel's resistance. Improved propeller efficiency and reduced vibrations can be achieved by optimizing the hull form. Hull shape modifications can potentially increase safety by reducing roll motions. These enhancements have not been adopted or evaluated on fishing vessels, despite the fact that they have been employed on seagoing ships The X-bow was discovered to be a feasible design upgrade, with a stem angle range of 6-8 degrees and the lowest resistance offered by a 10- degree stem angle. Also adding bilge keels to a fishing trawler resulted in a 40 percent increase in roll period and a 15% reduction in roll amplitude