Watch Buoy (2)
Alternative term: Station Buoy (U.S.A.)
An unlighted buoy established in the vicinity of a lightship (or, in the U.S.A. and Germany, of an important lighted buoy) as a reference point in case the lightship or buoy should be dragged off station.
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