Abstract
The mechanisms of coordination of anti-collision measures of ships are systematized and analyzed. The main of these mechanisms is COLREG, which regulates the actions of two vessels. It is shown that non-regulated coordination used in addition to COLREG is based on the standardized qualification of ship operators and includes knowledge of good seamanship recommendations. In the analysis of mechanisms of binary coordination, the classification of situations of ships' approach is clarified, and principles of a choice of actions general for ships of the same and different navigation statuses in free and constrained waters at normal visibility are highlighted. Ways of reception of numerical values of restrictions on parameters of passing targets in different sailing conditions are offered. It is noted that in order to solve the problem of automation of collision prevention processes, radar-AIS technologies should be supplemented with video camera technologies in the visible and infrared range combined with computer vision. The role of communication in vessel actions coordination has been analyzed. Proposals for its improvement given the achievements in the field of scientific and technological progress are elaborated. It is recommended to use AIS alerts of planned evasive trajectory to decrease uncertainty in the collision prevention process. To reduce the volume of these notifications, it is proposed to replace the segments of changes in motion parameters with time-equivalent segments of rectilinear uniform motion sections. It gets rid of transmitting data characterizing the manoeuvrability of a ship and planned modes of course or/and speed change, and practically does not worsen the assessment of the safety of the measures selected to avoid a collision. The received information allows the ship to present the trajectory of the giving way vessel on the screen in graphical form, both in true and relative motion. Using this capability allows the first ship to quickly assess the safety of the second vessel's planned operations. Keywords: collision avoidance, coordination mechanisms, anti-collision plans, mapping of evasive trajectories.
Published Version
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