ABSTRACT: Navigation through the TSS represent a certain amount of stress for watch crew. In such areas the traffic is heavier and close quarter situations and collisions are more likely to occur. Despite the COLREG regulations for navigation in TSS there are always situations which are differently interpretated by navigators and due to dense traffic avoiding collision can be challenging. As the COLREG rules state the collision can be most efficiently avoided by altering ship course, however sometimes that can be difficult in TSS during heavy traffic. This paper analyses the collisions and close quarter situations in TSS which could be avoided by reducing ship speed and reproduce similar situations in navigation simulator. Such reproduction on navigation simulator is used to analyses behaviors of navigator in collision situations and what prevents them to use speed reduction in collision avoidance. The results of the research may be used to familiarize the navigators that in certain situations reducing ship speed could be most efficient action to avoid collision.

KEYWORDS: Safety at Sea, Automatic Identification System (AIS), Maritime Education and Training (MET), Environment Protection, Collision Avoidance, Situational Awareness at Sea, Simulator, International Regulations for Preventing Collisions at Sea

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