Navigation General · Lateral Buoyage
What shape is a standard port-hand lateral buoy in U.S. waters?
- ANun (conical)
- BCan (cylindrical)✓ Correct
- CSphere
- DPillar with topmark
Explanation
Port-hand (left side when returning) buoys in U.S. waters are green, odd-numbered CAN (cylindrical) buoys. Starboard-hand buoys are red, even-numbered NUN (conical) buoys.
Authority: 33 CFR 62 (U.S. ATON System)
Practice the full Navigation General bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Navigation General questions
- Lateral Buoyage
In U.S. waters (IALA Region B), a red buoy with an even number marks which side of the channel when returning from sea?
- Lateral Buoyage
A green, odd-numbered buoy is encountered while proceeding upriver. Where should you pass it?
- Lateral Buoyage
Lateral buoy numbers in U.S. waters increase in which direction?
- Lateral Buoyage
What color light, if any, is exhibited by a starboard-hand lateral buoy at night?
- Lateral Buoyage
You are bound outbound from a harbor. A red nun buoy is ahead. You should pass it:
- Lateral Buoyage
A lighted lateral buoy shows a light rhythm of Fl(2) 6s. What does this mean?