A Model Test for Docking Operations of a Transportation Vessel during Float-over Installation

摘要

This study investigates the performance of docking operation in floatoverinstallation. A series of model tests were performed at the OceanEngineering Basin of the Korea Research Institute of Ships and OceanEngineering (KRISO). The condition that one-fourth of thetransportation vessel carrying the topside enters the jacket slot wastested. During the test, the vessel motion, line tensions, and fenderforces were measured under various irregular wave headings i.e. headsea and beam sea. The relation between the vessel surge motion andline tension was investigated under head sea waves. Wave periodeffects were also studied in the condition of peak period 5s to 8s. Tovalidate the experimental data, numerical simulations were performed.Numerical additional damping was found the main factor for surgemotion in head sea condition. The relation between the sway and yawmotion of the vessel and tension of lines was discussed in beam seawaves. Fender effects were also studied in these conditions. Responsecharacteristics about fender forces and the vessel motion relatively wellimplemented in the numerical simulations.