In Region B, red buoys have which topmark?

Master the Navigation, Seamanship, and Shiphandling (NSS) – Officer of the Deck (OOD) Phase 2 Exam with engaging flashcards and multiple choice questions, complete with hints and explanations. Prepare comprehensively for your test!

Multiple Choice

In Region B, red buoys have which topmark?

In IALA buoyage, topmarks distinguish the lateral marks: a conical (cone) topmark signals the port-hand mark, while a spherical (ball) topmark signals the starboard-hand mark. In Region B, red buoys mark the port-hand side of the channel and accordingly carry the cone topmark. So the red buoy in Region B has a cone topmark. The ball topmark would indicate a starboard-hand buoy, and a cube topmark isn’t used for this standard lateral marking.

In IALA buoyage, topmarks distinguish the lateral marks: a conical (cone) topmark signals the port-hand mark, while a spherical (ball) topmark signals the starboard-hand mark. In Region B, red buoys mark the port-hand side of the channel and accordingly carry the cone topmark. So the red buoy in Region B has a cone topmark. The ball topmark would indicate a starboard-hand buoy, and a cube topmark isn’t used for this standard lateral marking.

More practice questions