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Icebergs ahead

发布时间:2019-03-08 02:12:02来源:未知点击:

By Barry Fox An oil tanker that turns into an icebreaker is being patented by the Norwegian State Oil Company (WO 98/46477). The tanker has the usual long barge-like body—but instead of being driven by an engine and propeller, it is pushed along by a tugboat that snuggles into its stern. If there is ice ahead that might damage the hull, the tug unhitches from the stern,