Not sure if this would work, but it would be an interesting attempt.
G1 move all subs/sea units to Z6 (your going to lose your trans sadly), build 2-3 additional subs and at least 1 bomber this turn as well.
Now as far as air moves there up to you, but the fleet in Z12 must die (as that destroyer can reach you this turn), you can hit it with 3 figs easily and if you want to risk it hit the Z9 fleet with your bomber, Egypt, or against Russia.
The downside is the UK keeps there battleship, and they may or may not go after your subs with it, that is why you may want to move the cruiser there as well (help sink the BB). I’m not sure what the odds are for 3 subs vs a BB are, but I expect your subs would win, if not they can submerge and the BB can be dealt with next turn. This will put the UK off to placing a fleet nearby, and with the bomber or two they will be hesitant to try to block you in. Also, your sub fleet can take two routes out if they want. Just an idea.
The other thing you could try is a turn 1 AC and build subs, not sure how well that would work.