conning officer
The 'helmsman' steers a submarine.
helmsman
According to Pirate's Hold, the Helmsman steers the ship.
Helmsman
"Helmsman".
Navigator. The person who actually steers the ship is sometimes called the helmsman.
a helm or a helms man is a person who steers the boot or submarine
In ships or ferries, the person who steers is called a helmsman. In relatively small boats, the person that steers the boat is called a skipper.
The proper submarine/naval term is the Helmsman, who controls the rudder and dive planes.
Rowing. The cox also is responsible for steering a sailing ship. A Helmsman.
It could be anyone. But mainly the helmsman, but it could be the Skipper (Captain) if it's a small sport boat like a bow-rider. But normally the owner of the boat or person hired to Captain the boat drives the boat or the helmsman.
The captain or those officers under his orders.