chances are you’re going to lose the battleship you took to the channel in the opening attacks, which leaves your Baltic fleet pretty thin
You can also use the battleship for the SZ 111 attack and retreat it after one round. The British are then typically left with a damaged battleship that can’t escape because SZ 111 has no harbor.
That is usually where I send the German battleship, SZ 111. My attack on the Channel is all planes and maybe a couple of subs. Although, it has backfired on me when the fighter in Scotland doesn’t scramble and I get very good hits as Germany and end up sinking all the UK ships. Then my poor battleship is stuck all alone in SZ 111.
A good part of that scenario is it gives UK another target, but they have to commit planes to sink it (usually at least 2). That’s less UK planes bothering me somewhere else.