Pacific sun cruise ship's radar tower with three radars and flying P&O flag and red Ensign with a blue sea background Stock Photo - Alamy
Marseilles, France - 20 June 2013. Modern cruise ships have extremely sophisticated GPS, electronic, radar and navigation systems. You can see some of Stock Photo - Alamy
Marine radar - Wikipedia
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Navigation And Radar Equipment And Antenna On The Mast Of Cruise Ship Stock Photo, Picture And Royalty Free Image. Image 126740448.