Which buoy has color Yellow/Black/Yellow?

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

Which buoy has color Yellow/Black/Yellow?

Color patterns on buoys tell you what kind of mark you’re looking at. Yellow and black bands are the signature of cardinal marks in the IALA system, which indicate the direction of safe water around a hazard. The specific sequence with yellow bands on the outer parts and a black band in the middle is the pattern used to identify a cardinal mark. So the buoy showing Yellow/Black/Yellow is recognized as a cardinal mark, which is why that pattern is the correct choice. The other sequences do not match this distinctive cardinal-mark pattern.

Color patterns on buoys tell you what kind of mark you’re looking at. Yellow and black bands are the signature of cardinal marks in the IALA system, which indicate the direction of safe water around a hazard. The specific sequence with yellow bands on the outer parts and a black band in the middle is the pattern used to identify a cardinal mark. So the buoy showing Yellow/Black/Yellow is recognized as a cardinal mark, which is why that pattern is the correct choice. The other sequences do not match this distinctive cardinal-mark pattern.

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