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.
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。
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I suppose the most frightening moment (thus far) in An-Tiki's voyage was the realisation, after being disconnected from our towingvessel, that we were on our own.
This paper presents a calculating method based on the hull-engine-prop relations, apply capability curve of prop to determine the maximum speed of towingvessel.