Marine signal flag: Letter "X" (Xray) Size:2' X 3' or right side and reaches

or right side and reaches nearly to the flag center

British Admiralty Nautical Chart 3752: Approaches to Khalifa Port A Approaches to Khalifa Port is a standard nautical chart

British Admiralty Nautical Chart 1604: China – Chang Jiang

1 LPG AND LIQUEFIED PETROCHEMICAL GASES

Marine signal flag: Letter "X" (Xray) Size:2' X 3' or right side and reachesInternational maritime signal message: "stop carrying out your intentions and watch for my signals" Marine signal flags are international signals used by ships at sea to spell out short messages, or more commonly, used individually or in combination they have special meanings.