Investigation of the Effects of Ships' Speed and Directional Stability on Vessel Control in Restricted Waterways. Volume II

摘要

Volume II of this report describes Task 4 of a U.S. Coast Guard sponsored investigation of the effects of ship's speed in restricted waterways performed at the Computer Aided Operations Facility (CAORF). Task 4 was designed to determine how a vessel's risk of collision with another ship varied as a function of ship's speed and according to the initial separation of collision in terms of critical ranges between ships, the types of rudder deflection a pilot must be concerned with and the duration of time that the possibility of collision exists. Task 4 graphically shows a set of turn circles for rudder deflections from 5 degrees to 35 degrees for both directionally stable and unstable vessels at 4, 7, and 10 knots.