Towing boat. 拖船

French towing boat "Abeille Languedoc" is silhouetted in the open sea near Boulogne-sur-Mer as high winds battered northern France, Nov. 4, 2013.
November 5, 2013  http://www.voanews.com/media/photogallery/1784208.html

A towing vessel patrolled the sea near Boulogne-sur-Mer, France, as high winds battered northern France Monday.Pascal Rossignol/Reuters
Photos of the Week: Nov. 3-Nov. 8 - WSJ.com  http://online.wsj.com/news/articles/SB10001424052702303309504579186153661946822#4

【towing_boat】_有道词典
拖船
http://dict.youdao.com/search?le=eng&q=towing%20boat&keyfrom=dict.index

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