Experimental study on the manoeuverability of KVLCC 2 in shallow waters

Abstract

Manoeuvring of ships in shallow water region is known as hard and risky, so phenomena in the shallow water region should be carefully studied for the safe voyages of ships. Ship manoeuvring in shallow and confined waters has become an issue again to people those have been interested in safe manoeuvring. Reflecting this interest, KRISO (Korea Re-search Institute of Ships and Ocean Engineering) had conducted a project entitled “Enhancement of simulation tech-nique for navigation of a ship in confined waterway [PES171E]”. As a part of the project, experimental studies on the manoeuvring characteristics of KVLCC 2 were conducted. Both Free Running Model Tests (FRMTs) and Horizontal Planar Motion Mechanism (HPMM)tests were conducted on false bottom of KRISO’s towing tank. Based on the hy-drodynamic coefficients estimated from HPMM test results, numerical simulations of turning and zigzag manoeuvres were conducted. The simulation results were compared with the results of FRMTs, especially focusing on the change in manoeuvrability due to change of water depth.