Marine signal flag: Letter "P" (Papa) Sea of Okhotsk British Admiralty Nautical Chart 2078:

British Admiralty Nautical Chart 2078: Port Nolloth to Island Point is a standard nautical chart

making it easier for ship operators to comply with regulations

training institutions

British Admiralty Nautical Chart  1657: Greece - East Coast

It is designated to be proportioned at a ratio of 4:7

Marine signal flag: Letter "P" (Papa) Sea of Okhotsk British Admiralty Nautical Chart 2078:International maritime signal message: "All personnel return to ship; about to sail" Marine signal flags are international signals used by ships at sea to spell out short messages, or more commonly, used individually or in combination they have special meanings.