拖船自身有动力装置、用于拖带其他船只或浮体的船，在中国习称拖轮。拖船短而宽，船体结构较强，吃水大，有良好的操纵性和动稳性。船上主要是动力装置，上层建筑集中设在船的前部，尾部甲板上较空旷以便拖带操作。拖船装有专门的拖曳设备，尾部船底装有导管以提高拖力。

Tugboat has its own power unit and is used to tow other vessels or floating bodies, which is commonly called tugboat in China. Tugboat is short and wide, with strong hull structure, large draft, good maneuverability and dynamic stability. On board is mainly the power plant, the superstructure is concentrated in the front part of the ship, and the stern deck is more open for towing operation. The tug is equipped with special towing equipment, and the stern bottom is equipped with conduit to improve the towing force.