Helm

舵

duò

(tiller (or, in a large ship, the wheel) which is used to control the rudder of a marine vessel; entire steering apparatus of a vessel)

舵手

duòshǒu

(member of a vessel’s crew in charge of steering the vessel — see also helmsman, helmswoman)

舵輪 /舵轮

duòlún

(tiller (or, in a large ship, the wheel) which is used to control the rudder of a marine vessel; entire steering apparatus of a vessel)