Translation guide
A mechanical device with helical blades that rotates to propel a vehicle through water or air. In Japanese, the most common term is スクリュー, a loanword from English, but native terms like 推進器 and technical terms like 螺旋槳 also exist.
The most common, everyday word for a screw propeller, used in contexts like boats, ships, and submarines.
The standard loanword for 'screw propeller'. Widely understood and used in both casual and technical contexts.
船のスクリューが壊れた。
The ship's screw propeller broke.
スクリューの回転数を上げてください。
Please increase the screw propeller's rotation speed.
A native Japanese term meaning 'propulsion device'. More formal and often used in technical or engineering contexts.
この潜水艦は新型の推進器を搭載している。
This submarine is equipped with a new type of propulsion device.
A loanword from 'propeller'. While it can refer to screw propellers, it is more commonly used for aircraft propellers. In marine contexts, スクリュー is preferred.
May cause confusion with aircraft propellers. Use スクリュー for clarity in marine contexts.
プロペラの羽根が折れた。
The propeller blade broke.
Precise technical term used in engineering, naval architecture, or physics.
A technical term literally meaning 'spiral oar'. Used in specialized engineering contexts, but rare in everyday language.
螺旋槳の設計には流体力学の知識が必要だ。
Designing a screw propeller requires knowledge of fluid dynamics.
A direct loanword compound 'screw propeller'. Used in some technical documents but less common than スクリュー alone.
スクリュープロペラの効率を計算する。
Calculate the efficiency of the screw propeller.