Sailing it out right away throws the fleet away. England loses nothing on the attack. England probably loses very little (maybe a transport or two) in the counter attack. Germany loses most of their air force and their Northern Fleet.
Leaving it in SZ 5 costs the German’s nothing. If the Allies fail to attack, Germany can always augment the fleet later to make it costly when they own Africa, Brazil, Australia, India and New Zealand. (At least in game where DM or I are Germany…we tend to go ballistic with our transports. :) )
Basically, what I’m saying is that you start with a 101 IPC land and air surplus over Russia. Why dwindle that early trying to save 36-44 IPC worth of worthless boats? Why not press your advantage on the ground?
After all, if England ignores your SZ 5 fleet on UK1, you can move it to SZ 7 on G2 and move the SZ 14 fleet to SZ 7 which means you can pretty much leave W. Europe empty putting that much more pressure on Russia. (Yes, I realize you cannot both be invading India and putting the same transports in SZ 7. Different circumstances/game ideas. You don’t need to be a one show pony, you know.)
Or, if you REALLY want to make waves:
Germany 1:
Buy(40)
- Aircraft Carrier (16) - SZ 5
- Industrial Complex (15) - W. Europe
- 3 Infantry (9) - S. Europe
Germany 2:
Buy(42)
- 4 Submarines (32)
- Fighter (10)
Germany 3:
Hope like hell you can get enough Infantry with the 30-40 IPC you have left to push the Russians back!