Abstract
The collision risk to multiple targets and identification of feasible evasive manoeuvres can be assessed simultaneously by judging the tip of own ship's velocity vector in relation to the display of collision danger lines and cone-shaped collision danger regions to acquired targets in true motion representation. This visual technique for collision avoidance assessment is referred to as the Collision Danger Presentation (CDP) technique. Possible benefits of the CDP technique for High Speed Craft (HSC) navigation have been evaluated by a simulator test programme with own ship operating at 45 knots in congested traffic conditions in Osaka Bay under restricted visibility. 4 experienced HSC navigators and 4 maritime university students with license participated in the evaluation. It was shown that judgement of evasive manoeuvres based on the CDP technique is superior to standard ARPA and is thus capable of enhancing navigational safety for HSC operations.
