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== Ship tracking == | == Ship tracking == | ||
Various ship-tracking services exist that get their data feed from '''[[w:Automatic identification system]]s'''. AIS tracking become mandatory on all ships since 2004 <ref>http://www.vesseltracking.net/article/free-ais-ship-tracking-web-sites | Various ship-tracking services exist that get their data feed from '''[[w:Automatic identification system]]s'''. AIS tracking become mandatory on all ships since 2004. <ref>http://www.vesseltracking.net/article/free-ais-ship-tracking-web-sites</ref> | ||
AIS uses '''[[w:Maritime Mobile Service Identity]]''' codegroups for ship ID | AIS uses '''[[w:Maritime Mobile Service Identity]]''' codegroups for ship ID |