The IALA Region B red and green horizontally-banded buoys refer to what?

The IALA Region B red and green horizontally-banded buoys indicate preferred channels. These buoys are specifically designed to guide mariners through waters where navigation is safest and most efficient. The red and green bands signify the direction of the preferred channel, with the expectation that vessels should stay in the area indicated by the colors.

In navigational practice, recognizing preferred channels is crucial as it helps boats avoid obstacles and ensures safe passage through potentially hazardous areas. The colors and patterns help unify understanding among mariners about where to navigate to minimize risk and optimize safety. This understanding of buoy markings is essential for effective maritime navigation and awareness of navigational aids on the water.