USCG Exam PracticeRule 23 — Power-driven Vessel Underway (lights)
A power-driven vessel of 55 meters in length is operating on the Western Rivers above the Huey P. Long Bridge. What is the minimum required horizontal distance between her two masthead lights?
- A. Not less than one quarter of her length (13.75 meters)
- ✓ Not less than 10 metersCorrect
- C. Not less than 50 meters
- D. Not less than 2 meters
Why B is correct
33 CFR §84.03(e) provides a special rule for power-driven vessels 50 meters but less than 60 meters in length operated on the Western Rivers and specified waters: the horizontal distance between masthead lights shall not be less than 10 meters. This overrides the general one-quarter-length rule of §84.03(a) for vessels in this length and waterway category.
Cited:33 CFR §84.03(e)