also: ひきふね
noun
tugboat; tug; towboat
A boat used for towing or pushing other vessels. The reading えいせん is most common for this sense.
港で曳船が大きな貨物船を引っ張っている。
A tugboat is pulling a large cargo ship in the harbor.
noun, noun or participle which takes 'suru'
The act of towing a boat. Can be used as a noun or with する to mean 'to tow a boat'. The reading ひきふね is more common for this sense.
故障した船の曳船を手配した。
We arranged for the towing of the broken-down boat.
小型船がヨットを曳船している。
A small boat is towing the yacht.