Articles of The Transactions of KSRC

Method for estimation of ship curvilinear trajectory in continuous ice cover

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Year	2017
Issue	379
Volume	1
Pages	50-55
Caption	Method for estimation of ship curvilinear trajectory in continuous ice cover
Authors	Kostylev А.I., Sazonov K.Е.
Keywords	mathematical model, ice resistance, ship turning maneuver, “snake” maneuver, ice management
Summary	Object and purpose of research. Investigation of ship parameters during curvilinear motion in ice conditions. Subject matter and methods. The study looks at the data obtained both in model and full-scale tests including the first-hand authors’ experience from the Vladivostok icebreaker trials. Main results. A method for estimation of unsteady ship motion parameters in ice conditions is proposed. Examples given in the paper confirm robustness of the proposed method. It is found that a ship turning in relatively thin ice has a noticeable period of unsteady motion. Conclusion. The proposed method enables calculations of various scenarios of ship operation under ice management around offshore platforms. These estimates are intended to help in drafting efficient ice management plans, select proper ships for this purpose as well as to examine feasibility of certain ice management operations in early ship design phases. The method provides an opportunity to generate corrections for model test data obtained in ice basins on ship manoeuvrability in relatively thin ice.
Rubrics	Naval architecture