Topmark

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8-4-095

An object, or pair of objects, of characteristic shape and colour, that is carried on top of a buoy as a means of identification.


Note:

For details of topmarks used in the IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM Maritime Buoyage System, see Chapter 2 (Rev).




Please note that this is the term as it stands in the original IALAInternational Association of Marine Aids to Navigation and Lighthouse Authorities - AISM Dictionary edition (1970-1989)