Navigation lights
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Navigation lights are essential signals used on ships, boats and aircraft to indicate position, heading, and status at night or in low visibility.
Their standardized colors - red (port), green (starboard), and white (stern/mast) - help prevent collisions and ensure safe passage.
Sailor’s note: The system is so universal that even astronauts use navigation lights - spacecraft like the International Space Station are equipped with red and green lights, just like ships at sea!
