USCG Exam PracticeRule 23 — Power-driven Vessel Underway (lights)
An air-cushion vessel operating in the non-displacement mode is underway at night. In addition to the lights required for a power-driven vessel underway, she must exhibit which additional light?
- A. A high-intensity all-round flashing red light
- ✓ An all-round flashing yellow lightCorrect
- C. A second masthead light abaft and higher than the forward one
- D. Two all-round lights in a vertical line, red over green
Why B is correct
33 CFR §83.23(b) requires an air-cushion vessel operating in the non-displacement mode to exhibit, in addition to the standard power-driven underway lights, an all-round flashing yellow light where it can best be seen. The all-round flashing red light applies to WIG craft, not air-cushion vessels.
Cited:33 CFR §83.23