Ruder meaning in English — helm, oar, rudder

English meaning

helm noun The wheel or tiller used to steer a ship; more broadly, the position of control or leadership.
oar noun A long pole with a flat blade used to row or steer a boat.
rudder noun A flat, hinged piece at the back of a boat or aircraft used to steer it.

Ruder is used for these senses in English:

helm (nautical) The tiller (or, in a large ship, the wheel) which is used to control the rudder of a marine vessel; also, the entire steering apparatus of a vessel.
oar A type of lever used to propel a boat, having a flat blade at one end and a handle at the other, and pivoted in a rowlock atop the gunwale, whereby a rower seated in the boat and pulling the handle can pass the blade through the water by repeated strokes against the water's resistance, thus moving the boat.
rudder (nautical) An underwater vane used to steer a vessel. The rudder is controlled by means of a wheel, tiller or other apparatus (modern vessels can be controlled even with a joystick or an autopilot).
rudder (aeronautics) A control surface on the vertical stabilizer of a fixed-wing aircraft or an autogyro. On some craft, the entire vertical stabilizer comprises the rudder. The rudder is controlled by foot-operated control pedals.
webfoot (plural "webfoots") A web-footed animal.

noun The wheel or tiller used to steer a ship; more broadly, the position of control or leadership.
verb To steer a vessel, or to lead or direct a project or organization.

Steuer Steuerruder Steuerung Ruderausschlag Steuerfrau Steuermann Riemen