USCG Exam PracticeLight List, ranges, and light characteristics
A light is charted without a colour designation in its characteristic string. What colour should the mariner assume the light to be?
- A. Green, as green is the international default for safe-water lights
- B. Red, as red is reserved for port-hand marks and is the default
- ✓ White, as white is the default colour and is omitted from the characteristic stringCorrect
- D. Yellow, as yellow indicates a special-purpose aid and is omitted by convention
Why C is correct
White is the default light colour per the Light List convention and is omitted from the characteristic string when applicable. Any other colour — red, green, etc. — is explicitly stated. (Light List — W)