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1 TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

1 2010

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Possible Method of Clearing-up the Close-quarter Situation of Ships by Means of Automatic Identification System

Bukaty V. M., Morozova S. U.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2010

Vol. 4, no. 3

309--313

The tonic discussed is an non-traditional approach to the earliest possible clearing up of the head-on situation, consisting in defining the time of simultaneous approach to same latitudes and longitudes, bearing in mind that the information about the ships' movement was received by means of Automatic Identification System. If the time the ships proceed to these latitudes and longitudes is the same the collision of the ships is unavoidable and by the time identified the head-on situation is immediately indicated. If the time is different the ships will not be able to reach the same point and the collision will be avoided. The attempts have been also made to evaluate the minimal admitted inequality of time when the ships' safe passage without maneuvering is considered possible. This method is rather attractive because it does not require any additional measurements and it is not neces-sary to attract the Officer-in-Charge away from his main responsibility – to control the situation round the ship.