After a long search on the web, I found out that the version in TWoS of U-69 has wrong colors for the 3 flags. I think Nozaurio, he is the author of this one, had only orientated himself on pictures in b/w on google.
I have therefore decided to adapt "The Laughing Cow" historically correctly, as the existing version of the flags does not make any sense. The three flags on both sides where based on a quote from Götz von Berlichingen and stand for the letters L M A and is a short form of the German sentence "Leck mich am Arsch".
This flag alphabet was used by the German navy in shipping to exchange messages between ships by means of signal flags and was not the same flags like the international Code of Signals (INTERCO).
as comparison the flags of International Code of Signals (INTERCO):
You can find the download here:
https://www.subsim.com/radioroom/dow...o=file&id=5871