Experients of Stopping Maneuver and its Analysis

Abstract

Some experiments of a stopping maneuver are carried out for a ship at seas. The items related to motions of the ship during stopping maneuvers have been measured in order to investigate the influence of initial speeds and initial conditons on head reach, lateral transfer, ship tracks and stopping time. The analysis of ship stopping is performed by using the simplified equation of motion in a straight course and the set of the three equations with respect to forward, sway and yaw motions. Finally the ship trajectories during stopping maneuvers are predicted for several initial speeds and several initial conditions and the predictions are compared with the experimental results. Althought the initial conditons are sensitive for the trajectories of ship during stopping maneuvers, the preditons seem to be fairly good agreement with the experimental results.