Question 304Navigation General

70% to pass

As you enter a U.S. channel from seaward the numbers on the buoys _______________.

A increase with the can buoys being even numbered
B increase with the can buoys being odd numbered
C decrease with the can buoys being even numbered
D increase in channels going to the north or west, and decrease in channels going to the south or east
AI Explanation

The correct answer is B) increase with the can buoys being odd numbered. As you enter a U.S. channel from seaward, the buoy numbers will increase, with the can (cylindrical) buoys being odd-numbered. This is in accordance with the U.S. Aids to Navigation System, which follows the standard that odd-numbered buoys mark the starboard (right) side of the channel when entering from seaward, while even-numbered buoys mark the port (left) side. The other options are incorrect because: A) the can buoys would actually be odd-numbered, not even-numbered; C) the numbers would increase, not decrease; and D) the numbers would increase in all directions, not just north/west or south/east.

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