USCG Exam PracticeRule 23 — Power-driven Vessel Underway (lights)
A power-driven vessel of 75 meters in length is underway at night. Which lights is she REQUIRED to exhibit?
- A. One masthead light forward, sidelights, and a sternlight
- ✓ Two masthead lights (forward and after), sidelights, and a sternlightCorrect
- C. One masthead light forward, an all-round white light aft, and sidelights
- D. Two masthead lights in a vertical line, sidelights, and a sternlight
Why B is correct
A power-driven vessel of 50 meters or more in length is required to exhibit a second masthead light abaft of and higher than the forward one, along with sidelights and a sternlight. The option of omitting the second masthead light applies only to vessels of less than 50 meters. 33 CFR §83.23(a).
Cited:33 CFR §83.23