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.
From the International Code of Signals, this long-lasting nautical flag is made from nylon fabric with double-stitched seams, canvas heading and brass grommets. This flag is sewn to order.