The 'R' flag, or Romeo flag, is used to represent the alphabetic character 'R' for use in a message between boats. It also means "Preparing to replenish (At sea) Ready duty ship (Inport)."
From the International Code of Signals, this long-lasting nautical flag is made from nylon fabric with double-stitched seams, canvas heading and grommets. Made to order. Allow 2 weeks for delivery.