Safety Evaluation of Berthing into Harbours under Strong Currents from Viewpoint of Ship Motions

Abstract

The influence of ship operation due to tidal currents has not studied in detail. The first step of this study reveals that present port planning is quite insufficient for ships to berth in strong tidal currents. The field observation of sea water and tidal current around T Port makes obvious that grasp of water environment is inevitable, especially in places with complicated density flow. Furthermore, numerical simulations of berthing ship motions are fully improved to evaluate the safety of berthing in strong tidal currents and winds. Simulated results can almost reproduce observed ship motions. It also makes the definition of berthing criterion possible numerically. Finally, new evaluation method of port planning is proposed from viewpoint of berthing ship motions in strong tidal currents