HPMM 시험에 의한 대형 쌍축 컨테이너선의 조종성능 추정

Abstract

Recently, the attention to very large container ships has been increased due to their increasing demand. To satisfy the IMO maneuvering standards adopted in 2002, it is necessary to investigate the maneuvering performance of these new large container ships. In this paper, the maneuvering characteristics of a large container ship with twin-skegs were investigated through HPMM(Horizontal Planar Motion Mechanism) test and computer simulation. The mathematical model for maneuvering motion with 4DOF(four degree of freedom) of twin-propellers and twin-rudders system was established to include effects of roll motion on the maneuvering motion. And to obtain roll-coupling hydrodynamic coefficients of a container ship, 4DOF HPMM system of KRISO which has a roll moment measurement system and a roll motion mechanism was used. With 4DOF HPMM system, HPMM tests were carried out for 12,000TEU class container ships with twin-skegs and single skeg at full load condition. Using the hydrodynamic coefficients obtained, simulations were made to predict the maneuvering motion. The maneuvering characteristics of a large container ship with twin-skegs are discussed based on the experimental and simulation study of a 12,000TEU class container ship, and the simulation results are compared with those of single skeg container ship.