Tried the latest version and for the first time in a campaign my crew has be injured...
No longer can I shell away with the deck gun when destroyers are any where to be called in. I was out of torpedoes and needed one more ship and I tried hard before they reached me. Took on quite a bit of damage from them shelling me before getting submerged and I still didn't get the ship.
After a bit of cat and mouse, and some needed repair work I headed back to refill and shall get my last ship.
I can see that its going to be tough if you get caught in shallower waters with the destroyers on your back.