Recently, I managed to purchase a copy of Edward Von der Porten’s
_The German Navy in World War II_. One of the pictures is of the Type
IX C submarine U-537. On the front of the conning tower is a symbol
which looks for all the world like the Olympic rings. Can anyone on the
list tell me what is the significance of this symbol? Was in unique to
this particular boat, or was it a standard feature of this class of U-
boat? Thanks in advance, Ed.

Edward Wittenberg
ewitten507@aol.com