http://www.subsim.com/radioroom/showthread.php?t=219074
see the prize regulations thread
according to the prize regulations which governed U-boat warfare at the time
By order of Der Führer, Greek vessels are to be considered hostile due to a large number of titles of transfer from Greece to the British forces.
If you are using the GWX mod... you
shouldn'
t receive a penalty
Additionally, Neutral ships traveling under the protection of an enemy convoy were subject to attack