Author(s): A. . V. Yerusalimsky; L. G. Tsoy
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Abstract: Operational experience of icebreakers and icebreaking cargo ships shows the change of their passability in ice during the lifetime. The older the ships the worse are their ice qualities. The main reason of the reduction of the passability in ice of ships in the course of operation is the increase of the friction component in the total balance of the ice resistance owing to the increase of roughness of the hull outer plating in consequence of the corrosive and erosive wear. Thus the existed earlier point of view according to which the icebreakers maintain their plating smooth as a result of being polished in the course of operation in ice is not confirmed. The results of the performed investigation have proved the expediency to use stainless steels for the ice strake of icebreakers. Outer plating of the icebreaking cargo ships which operate in ice for a lesser time than the icebreakers must be protected by wear-resistant coatings.
Year: 1984