Answering International Code Signal Pennant Flag Hudson Bay British Admiralty Nautical Chart 1091:

British Admiralty Nautical Chart 1091: Mediterranean Sea – Greece

Grand Bahama and the Little Bahama Bank to Cherokee Sound

British Admiralty Nautical Chart 2161: Ports in the Gulf of Tartary and on Ostrov Sakhalin is a standard nautical chart

British Admiralty Nautical Chart 1431: Ireland - East Coast

Answering International Code Signal Pennant Flag Hudson Bay British Admiralty Nautical Chart 1091:Also known as the Code Flag for the Navy, this flag is hoisted under the Ensign at the Peak. When used as the Answering Pennant it is hoisted at the Foretop, or where best seen. It means "Message is understood." It is also used as the numeric decimal point.