Translation guide
The English word 'warship' refers to a ship built for combat. In Japanese, the most common and general term is 軍艦 (gunkan). However, modern usage often prefers specific types like 戦艦 (senkan, battleship) or 護衛艦 (goeikan, escort ship), depending on context. This guide covers general and specific terms, as well as historical and modern nuances.
Referring to any ship used for naval warfare, without specifying type.
The standard word for 'warship'. It covers all military vessels. Commonly used in historical contexts and general references.
その港には多くの軍艦が停泊していた。
Many warships were anchored in that port.
A more formal or technical term for naval vessels, often used in official contexts.
海上自衛隊の艦艇が訓練を行っている。
The Maritime Self-Defense Force's vessels are conducting training.
Literally 'combat ship', used in some technical or historical descriptions, but less common than 軍艦.
この戦闘艦は最新のレーダーを搭載している。
This combat ship is equipped with the latest radar.
Specifically referring to a battleship, a large armored warship with big guns, especially from the World War era.
The direct equivalent of 'battleship'. Often used for historical ships like the Yamato.
戦艦大和は世界最大の戦艦だった。
The battleship Yamato was the world's largest battleship.
Referring to a modern warship used by the Japan Maritime Self-Defense Force, often translated as 'destroyer' or 'escort ship'.
The official term for JMSDF destroyers and escort vessels. Despite the name, they function as multi-purpose warships.
護衛艦「いずも」は事実上の空母である。
The escort ship Izumo is effectively an aircraft carrier.
The traditional term for 'destroyer'. Still used for foreign navies or historical contexts, but JMSDF uses 護衛艦.
A warship that serves as a seagoing airbase, carrying and launching aircraft.
The full term for 'aircraft carrier'. Often abbreviated to 空母 (くうぼ) in conversation.
航空母艦は艦隊の中心的存在だ。
The aircraft carrier is the centerpiece of the fleet.
Common abbreviation for 航空母艦. Used in news and casual talk.
A warship that operates underwater.
The standard word for 'submarine'. While technically a warship, it's usually specified separately.
潜水艦が敵艦を追跡している。
The submarine is tracking the enemy ship.
Referring to warships from the age of sail or earlier Japanese naval history.
Used for pre-modern military ships, such as those in the Sengoku period.
戦国時代の軍船が復元された。
A warship from the Warring States period was reconstructed.
Similar to 軍船, often used in historical texts.
古文書には戦船の記述がある。
Ancient documents contain descriptions of warships.
軍艦 is the common, everyday word for warship. 艦艇 is more formal and often used in official documents or news reports. In casual conversation, 軍艦 is preferred.
The Japan Maritime Self-Defense Force uses 護衛艦 (escort ship) for vessels that are functionally destroyers or even aircraft carriers. Calling them 戦艦 (battleship) or 駆逐艦 (destroyer) may be technically incorrect in official contexts.
アメリカ海軍の駆逐艦が寄港した。
A U.S. Navy destroyer made a port call.
The latest aircraft carrier was commissioned.