International maritime signal flags
The NATO usage generally differs from the international meanings, and therefore warships will fly the Code/answer flag above the signal to indicate it should be read using the international meaning.During the Allied occupations of Axis countries after World War II, use and display of those nations' national flags was banned.[citation needed] In order to comply with the international legal requirement that a ship identify its registry by displaying the appropriate national ensign, swallow-tailed versions of the C, D, and E signal flags were designated as, respectively, provisional German, Okinawan, and Japanese civil ensigns.Being swallowtails, they are commonly referred to as the "C-pennant" (German: C-Doppelstander), "D-pennant", and "E-pennant".[citation needed] Prior to 1969: "The way is off my ship; you may feel your way past me."
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