OUPV & 100-Ton Master · Required Equipment — Navigation Lights
A power-driven vessel of less than 12 meters, when underway at night, may show, instead of separate masthead and stern lights:
- ASidelights plus an all-round white light (combined), provided the lights meet the required arcs and ranges✓ Correct
- BNo lights if under power
- COnly a flashing blue light
- DTwo red lights in a vertical line
Explanation
Rule 23(c) permits a power-driven vessel under 12 m to combine the masthead and sternlight into a single all-round white light, shown with sidelights, instead of the separate masthead and stern lights required of larger vessels — as long as the visibility ranges and arcs are met.
Authority: Navigation Rules, Rule 23(c)
Practice the full OUPV & 100-Ton Master bank
Free spaced-repetition quizzing across 2550 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related OUPV & 100-Ton Master questions
- Credentials & Routes
What does the OUPV (Operator of Uninspected Passenger Vessels) credential authorize?
- Credentials & Routes
A vessel certificated under Subchapter T is best described as a:
- Credentials & Routes
The 'near coastal' route on a license authorizes operation within how many nautical miles of the coastline?
- Credentials & Routes
A Master 100 Gross Tons (Near Coastal) credential authorizes a mariner to:
- Credentials & Routes
What is the minimum age to be issued an OUPV credential?
- Sea Service
For an OUPV credential, how much total sea service is generally required?