Tsymbal M. Development of the theory and methods for preventing collisions of vessels

Thesis for Doctor's degree dissertation on specialty 05.22.13 - Navigation and traffic control. Odessa National Maritime Academy. - Odessa, 2007. In this dissertation the theoretical generalization and new solution of the optimal maneuvering for collision avoidance were obtained. This optimal maneuvering grounding on flexible strategies. Flexible strategy is the method, which allows forming a strategy of the operating vessel for avoiding collision when navigating in congested waters and the risk of collision exists even with more than one vessel. This strategy does not conflict with ColRegs requirements and take into account multy-variant approach of conduct of targets and possibility of worsening situation in time. The methodological base for the solution of this problem is the theory of the dynamic n-guided systems. This theory is the logical evolution of the differential game theory, which is applied by many authors in the synthesis models for the search of optimum maneuvers for collision avoidance.Conception of flexible strategies for preventing collisions of ships is examined as temporary measure of transitional character, which in further development must result in principle new optimum coordinating system of vessels conduct instead of ColRegs. A methodological base for the solution of the outlined problem remains the theory of the dynamic n-guided systems with the use of principles of external control and the choice of game cooperative principles of situational disturbance compensation.