Translation guide
A patrol boat is a small naval vessel used for coastal defense, law enforcement, or surveillance. In Japanese, the most common equivalent is 巡視船 (junshisen), used by the Japan Coast Guard. Other terms exist for military or police contexts.
A vessel used by the Japan Coast Guard for patrol, rescue, and law enforcement at sea.
Standard term for a Japan Coast Guard patrol vessel. Used in official and news contexts.
巡視船が不審船を追跡した。
The patrol boat pursued the suspicious vessel.
Refers to a smaller patrol boat, often used for harbor or coastal patrol.
巡視艇が港内をパトロールしている。
The patrol boat is patrolling inside the harbor.
A small naval vessel used by the military for patrol, often armed.
Military term for a patrol boat, used by the Japan Maritime Self-Defense Force.
哨戒艇が領海を警戒している。
The patrol boat is guarding the territorial waters.
General term for a security or patrol boat, can be used for both military and police.
A boat used by police for river, lake, or coastal patrol.
Specifically a police patrol boat.
警察艇が水上バイクを取り締まった。
The police boat cracked down on jet skis.
A small boat used for patrol, not necessarily official.
Loanword from English, used for small patrol boats in various contexts.
湖でパトロールボートが監視している。
A patrol boat is monitoring the lake.
巡視船 is used for Japan Coast Guard vessels, while 哨戒艇 is a military term for naval patrol boats. Use 巡視船 for civilian law enforcement and 哨戒艇 for armed forces.
巡視船は海上保安庁の船です。
A 巡視船 is a Japan Coast Guard vessel.
哨戒艇は自衛隊の船です。
A 哨戒艇 is a Self-Defense Force vessel.
警備艇が沿岸を巡回している。
The patrol boat is patrolling the coast.