Zaphod B. said:Where the ship was registered or what it was carrying are irrevelant. The only thing that matters is that it was flying neutral colors (if I remember correctly).
Perhaps, but the german u-boat captains had the registry book which would have shown that it was british. But, again, if it was flying an american flag (which I beleive the british captains did), you're right.
How off-topic is this, eh?