Answering International Code Signal Pennant Flag Size:3' x 5' British Admiralty Nautical Chart 4614:

British Admiralty Nautical Chart 4614: Ile Rapa to Pacific-Antarctic Rise is a standard nautical chart

NOAA Nautical Chart 17405: Ulloa Channel to San Christoval Channel

a premium-grade nautical chart meticulously crafted to meet the stringent Safety of Life at Sea (SOLAS) regulations

British Admiralty Nautical Chart  686: Yelibuya Sound to Banana Islands is a standard nautical chart

Barra Head to Greian Head

Answering International Code Signal Pennant Flag Size:3' x 5' British Admiralty Nautical Chart 4614: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.