在极地冰区中，破冰船利用起尾部的特殊凹槽与被拖船船首相连的拖带方法。
A method of towing vessels through polar ice by means of icebreaking tugs with a special stern notch suited to receive and bow of the vessel to be towed.
论文最后对影响拖带作业安全的因素分别从拖船条件、被拖船条件及通航环境三个方面进行了分析，提出了港内拖带作业标准及港内拖带注意事项。
This article also analyzes factors affecting the safety of towing operations, they are the tug conditions, towed-ship conditions and navigation conditions, proposes towing standards and precautions.
工程师们认为，如果拖船像超级油轮一样大，那么长11公里、宽2公里的冰山就可以被运输出去。
Engineers think that an iceberg up to 11 kilometres long and 2 kilometres wide could be transported if the tug pulling it was as big as a supertanker.
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