International Meaning- This code flag denotes the letter M & communicates the message My vessel is stopped and making no way through the water.
AGAS Mike Code M Marine Signal 4x6 Ft Flag - Printed 200D Nylon - Canvas Header - Brass Grommets - Colorfast & Stitched Edges - Nautical Boat Flag
INTERNATIONAL CODE OF SIGNALS (INDIVIDUAL FLAGS) - Elmers Flag and
Nylon Rope Metal Y International Code Signal Flag
Code Signal Flags
EDER # 5 SIGNAL CODE NAUTICAL PENNANT FLAG NUMBER FIVE ICOS 2 2/3
Nylon Rope Metal V International Code Signal Flag
Valley Forge Perma-Nyl 8ft x 12ft Nylon American Flag
Nylon Rope Metal V International Code Signal Flag
International Code of Signals - Wikipedia