Why not ask if you need a transport to cross the Tasman sea. Heck, people can swim the English Channel so therefore no transport should be required, right?
Fair dinkum. This has got to be one of the weirdest A&A questions I’ve heard.
One to two subs a turn is not a bad idea for the germans. First of all you take away a British NO, secondly building one off the coast of southern France threatens the gibraltar sea zone. There’s a legitimate chance of knocking out a few transports outside of gibraltar with a few subs from the med and air power from west Germany. Although to do it you need Italy or Germany to hold Morocco as that’s the only landing space available for fighters and tacs from w Germany.