Translation guide
A rudder is a flat piece of wood or metal at the back of a boat or airplane that is used for steering. In Japanese, the word depends on the type of vehicle and context.
The steering device at the stern of a boat or ship.
The movable control surface on the vertical stabilizer of an aircraft.
Something that guides or controls direction, like a leader or principle.
Used metaphorically for guidance or control, as in 'take the helm' of an organization.
舵 (かじ) is the traditional Japanese word and is used broadly for boat rudders, helms, and figurative steering. ラダー is a loanword used mainly in technical or modern contexts for both ships and aircraft. In everyday conversation about boats, 舵 is more common.
The rudder broke and the ship became uncontrollable.
Loanword from English, used in technical or modern contexts, especially for ship rudders.
この船は最新式のラダーを装備している。
This ship is equipped with the latest rudder.
Specifically the rudder of an airplane, controlling yaw.
パイロットは方向舵を使って機首の向きを変えた。
The pilot used the rudder to change the aircraft's heading.
Also used for airplane rudders, especially in aviation jargon.
ラダーペダルを踏んで方向舵を操作する。
Step on the rudder pedals to control the rudder.
彼が会社の舵取りを任された。
He was entrusted with steering the company.