MOTION OF HEAVY-TONNAGE VESSELS IN THE ICE DRIFT CONDITIONS

The authors present the results of theoretical studies of the heavy-tonnage vessels motion under ice drift conditions. The research is performed in the Ice Research Laboratory of Krylov State Research Centre. The shifting of ice forces acting on the hull during the asymmetrical motion in ice conditions is demonstrated. Recommendations are given on compensating the ice forces by the propulsion and steering complex controlling. The results make it possible to evaluate the possibility of such vessels motion with a drift angle in order to maintain the chosen course. Also, the obtained data can be used to develop requirements in the field of ice performance for designed icebreakers and heavy-tonnage ice-going vessels.

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