Which color signaling device would be appropriate for night signaling?

• A. Red flares
• B. Green star rockets
• C. Blue smoke
• D. White flags

Answer: (A)

Night signaling needs a signal that cuts through darkness with bright, immediate visibility. Red flares deliver an intensely bright light that can be seen from a long distance after dark and are universally recognized as distress signals on the water. That quick, high-contrast visibility is what makes red flares the best choice for night signaling. The other options aren’t as reliable at night: green star rockets and blue smoke can be harder to notice or drift with the wind, and white flags aren’t effective after dark and are not used as distress signals at sea.