As you enter a U.S. Channel from seaward, the numbers on the buoys _______.

The correct response is tied to the IALA buoyage system, which is implemented in the U.S. This system assigns odd numbers to can buoys, which are typically green, and their numbers increase as you travel inward from the sea into port. Essentially, the direction of navigation leads to an increase in the odd-numbered buoys, with even-numbered buoys—marked as nuns—corresponding to the opposite side of the channel.

Knowing this convention is crucial for navigators, as it allows them to identify which direction they are heading and to stay within the safe navigational channel. The odd-numbering of can buoys symbolizes their role in marking the port side when entering from seaward, thereby reinforcing a clear and consistent standard that aids in maritime navigation. Understanding this numbering system promotes safety and efficiency when navigating through U.S. coastal waters.