Original U.S. WWII Navy Large Submarine Warning Flag with Halyard - 60 x 96” WWII but soon he had to

but soon he had to suspend it

Featuring ventilation holes with stamped rims much like the German M40

complete with the red felt insert

The solution was the implementation of the swivel bail

We can not find any original arsenal stampings in the body

Original U.S. WWII Navy Large Submarine Warning Flag with Halyard - 60 x 96” WWII but soon he had toOriginal Item. Only One Available. A "Notice To Mariners" from 1917 states: The submarine distinguishing and warning flag is hoisted on the tender or parent ship of submarines to indicate that submarines are operating in the vicinity. Launches accompanying submarines also fly this flag. The submarine warning flag consists of a rectangular red flag with white center on which is the profile of a torpedo in black. Vessels seeing this signal should give