A Study on the Motion of a Single Point Moored Ship in Irregular Waves

Lee, Seung-Keon; Jo, Hyo-Jae; Kang, Dong-Hoon

Journal of Navigation and Port Research 2003;27(1):55-61.
Published online March 31, 2003.

불규칙파중 1점계류 선박의 거동해석에 관한 연구

이승건, 조효제, 강동훈

A Study on the Motion of a Single Point Moored Ship in Irregular Waves

Seung-Keon Lee, Hyo-Jae Jo, Dong-Hoon Kang

Abstract

The maneuvering equations of motion are derived to express the motion of a ship. The wave forces in the time domain analysis are generated from the frequency transfer function calculated by 3-D source distribution method. The linear wave forces whose periods are equal to those of incident waves and the nonlinear wave forces that make long period drift forces are computed for the simulation. The consideration of irregular waves and nonlinear wave force effects on the slew motion are carried on the analyzing the motion of ship in the regular and irregular waves.

Key Words: slew motion;single point moored;irregular wave;3-D source distribution method;long period drift force