Pipchenko A. Ship control optimization in heavy weather conditions

Thesis is devoted to the topical problem of efficiency improvement of ship routing in adverse weather conditions. To reach the prescribed goal the appropriate set of problems was defined. Series of improvements were made to ship seaworthiness computation methods. On the basis of fuzzy logic theory complex two-level multi-criteria ship state assessment system, was developed. For the formation of prescribed system the risk assessment concept was applied. That gave the possibility to obtain the integral ship state assessment in form of generic risk level from heterogeneous data. Conducted research had allowed to produce a complex method for searching the optimal route and control regimes in heavy weather conditions. For the approval of correctness and efficiency of results proposed in this work, corresponding algorithms and programs were developed. Check computations on the developed programs and models of voyage planning and on-scene control in heavy weather allowed to confirm the reliability and efficiency of obtained results.