Ship Collision Avoidance Decision Making In Close-Quarters Situation

After analysed the views of close - quarters situation at home and abroad, In the paper, the concepts, the domains and the models of close -quarters situation, is studied. Based on the analysis of the character of ship collision avoidance, a method for making decision in close ?quarters situation is presented. The paper adpoting the questionaire and geometry for collision avoidance compared with collision avoidance decision making in close - quarters situation. we get more complete conclusions that will be in the service of productive practice.