摘要：The paper introduces a visualization method that enables the navigator to estimate an encounter situation and choose collision avoidance manoeuvre,if necessary.It is based on the Collision Threat Parameters Area method and offers new features: fuzzy sectors of forbidden speed and course values,the possibility to use any given ship domain and a new formula of collision risk assessment.All these elements result in a method,which enables the navigator to differentiate between varying levels of risk and to point out the direct threats.The method is fast enough to be applied in the real-time decision support system.
