If not a harbour mooring buoy it will mark a hazard such as a wreck
anchorage area
Area limits for an anchorage.
Anchorage area
The yellow buoy is a warning that indicates underwater pipes or shoals. Boats need to stay clear of yellow buoys.
A yellow buoy in the water means caution. They can mean there is danger of pipes, dredge lines or other dangers.
Buoy is a homophone for boy. A buoy is a floating object used to mark a location in a body of water.
Achoragae area
Achoragae area
anchorage area
an anchorage in water
Area limits for anchorage