Why do ships and aircraft use red and green lights for port and starboard? Were these colors an arbitrary choice? - Quora
Why Ships Use Port and Starboard Instead of Left and Right? | Why Ships Use Port and Starboard Instead of Left and Right? | By The Maritime Post | Ever wondered why
![Why do ships use 'port' and 'starboard' and not 'left' or 'right' - International Register of Shipping (INTLREG) Why do ships use 'port' and 'starboard' and not 'left' or 'right' - International Register of Shipping (INTLREG)](https://intlreg.org/wp-content/uploads/2019/10/048-port-starboard-left-right.jpg)