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About: Ramark     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatAidsToNavigation, within Data Space : dbpedia.org associated with source document(s)

Type: lighthouseyago:Abstraction100002137yago:Aid105154908yago:Asset105154517yago:Attribute100024264yago:Quality104723816yago:Resource105154676yago:WikicatAidsToNavigation New Facet based on Instances of this Class

A Ramark, acronym for RAdar MARKer, was a type of radar beacon used to mark maritime navigational hazards. Ramarks are no longer in use. They were wide-band beacons which transmitted either continuously or periodically on the radar bands. The transmission formed a line of Morse characters on a plan position indicator radar display (commonly merely called PPI) which radiated from the centre of the display to its edge, hence giving only a bearing, as opposed to racons which give bearing and position.