Question 328Navigation General

70% to pass

Under the IALA Buoyage Systems, a spherical buoy will mark the _______________.

A port side of the channel
B the position of an underwater cable
C a hazard to navigation
D safe water
AI Explanation

The correct answer is D) safe water. Under the IALA Buoyage System, a spherical buoy marks the safe water in a channel or waterway. These buoys indicate that there is deep water all around the buoy, and that it is safe for vessels to pass on either side. The spherical shape is a distinctive feature that helps mariners identify these "safe water" markers. The other answer choices are incorrect because: A) port-side markers are typically green can buoys, B) underwater cables are not typically marked with buoys, and C) hazards to navigation are marked with different shapes and colors, such as red nun buoys.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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