One day on the boat, underway and submerged, the starboard turbine generator lost steam. The engineering officer of the watch said on the 2MC, "Engine room upper level, shut down and secure the starboard turbine generator." The upper level watchstander, one of the most experienced guys we had, acknowledged the order and proceeded to trip the port turbine generator. Loss of all AC power. Not a good thing. The engineering watch supervisor ran back and said, "Jeezze George, Port Left, Starboard right!" The response was, "It guess that depends on which way you are facing, Chief."
We put laminated green 'Starboard' and red 'Port', laminated engraved plastic labels on the controls. When we got back to the tender, during an inspection, the Commodore ordered them taken off. "Not on ships' plans!"
Ted, KX4OM