New Idea:
The transition from the Mediterranean to the Atlantic Ocean was almost impossible for the Germans to do with their surface fleet because of artillery, shore batteries in Gibraltar.
Now, the idea is:
If you have an Artillery unit on Gibraltar, you may fire on all enemy surface ships (Destroyer, Battleships, Carriers, Transports) that attempt to pass from SZ 13 to SZ 12 or from SZ 12 to SZ 13 in BOTH combat and non-combat rounds. You get one shot at each ship at 2 or less, only one artillery unit can fire per nation. (Therefore Japan and Germany could EACH get a shot if they BOTH had an Artillery piece in Gibraltar. Likewise, England, America and Russia could EACH get a shot if they had an Artillery unit in Gibraltar.)
You have to roll the dice per ship. Each roll hits the designated ship, the defender will NOT get to chose casualties. If you roll three dice at a carrier, destroyer and battleship; IN THAT ORDER; and the 2nd roll hits, then the destroyer is sunk.
Ships at rest in SZ 13 or SZ 12 cannot be targeted. ONLY ships passing THROUGH the straight of Gibraltar are target able.
Submarines cannot be targeted.
Change to board set up:
England gets 1 Artillery unit in Gibraltar at the start of the game.