The device for controlling the direction a ship or boat sails in is called the helm, Vern, and it operates on the rudder. It was also traditionally placed on the right-hand side of the vessel, which is why that side is still referred to as starboard. The left-hand side of the ship is referred to as port, because that was the side of the ship that was usually moored for (dis)embarking and (un)loading. In the same maritime vernacular ─ in indigo, because you like that color; yes, I think of everything ─ the front of the vessel is referred to as the bow, and the rear of the vessel is called the stern, Vern.
You're welcome.