Clean up a point

Rating: Null/10 (3 July 2006)

Movie Friends
When the Americans boarded the German Sub it was a pouring down rain storm. If the German supply sub's mission was to rescue the disabled German Sub.....why did the fire on it. I don't think they could distinquish that there were two subs. How could they know what was going on and why would they fire on a Sub that was disquised to look like a U boat?
It looked like the two subs were side by side and that the supply sub would not be able to tell there were two vessels.
Am I off base here.
Thanks