Analysis of limiting operational condition of pipeline laying ship under the influence of wave in port

Based on the underwater pipeline laying project in port, this article analyzed the movement characteristics of pipeline laying ship and limiting operational condition under the influence of wave in port by using numerical simulation method. The results show that the amplitude of the movement response of the pipeline laying ship increases with the increase of wave height. Under the actions of waves in different wave directions, the movement response of the pipeline laying ship varies greatly. The heave and roll are the most significant in the wave condition with a direction of 90°, and the pitch is the most significant when the wave direction is 180°. The limiting operational conditions of the pipeline laying ship vary on the impacts of waves in different directions. The limiting operational wave height is the smallest when the wave direction is 90° while the limiting operational wave height is the largest when the wave direction is 0°.