Note:  Do not rely on this information. It is very old.

Helm

Helm, the apparatus by means of which a ship is steered. It includes, in large ships, the rudder, the tiller, and the wheel, and in small craft the two former only. The term helm is applied more particularly to the tiller; "starboard the helm" means "bring the tiller over to the right side of the ship." To "put the helm down" is to push the tiller to the lee side, so as to put the vessel about, or lay her to the windward.