Icebergs ahead

日期:2019-02-27 04:05:12 作者:甘呱缩 阅读:

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,