A floating, and moored, artificial navigation mark. It can be recognized by means of its shape, colour, pattern, topmark or light character, or a combination of these. It may carry various additional aids to navigation.
Note 1 :
The terms light buoy and lighted buoy refer to a buoy that is fitted with a signal light.
Note 2 :
The term high focal plane (HFP) buoy may be used for a light buoy on which the signal light is fitted particularly high above the waterline.
Note 3 :
The terms unlighted buoy and blind buoy refer to a buoy that is not fitted with a signal light.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM