There was a time when helm and rudder orders had opposite effects.
Just a piece of useless naval trivia but into the 1920's, in the Royal Navy a port (left) helm order resulted in the ship turning to starboard (right). The reason was in a sailing ship, the rudder is moved by the tiller (in larger ships attached by assorted tackles and pulleys to the wheel) and rotates around the rudder post. Therefore moving the tiller to the right causes the ship to steer to the left.
The RN lived with this anachronism well into the machine age and long after virtually all other navies adapted common sense "Starboard helm means Right Turn" orders.
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