Nah, do they? - I never have any problems outrunning corvettes on the surface. My standard tactic is to run away from them at 16 knots, keeping them at around 200-240 (or 160-120) bearing and 2500m range(they never seem to close at that distance, thats why I'm sure they only do 16 knots in game). At that range they cant seem to hit me, and I can pick of their gun turret with my deck gun. After that, just circle around them and sink them.

Now THERE's something I'll bet a lot of real U-boat kapitans wished they could do. In real life the corvette was just as hard to hit as the u-boat, and it only took one hit to make the u-boat a very poor surface ship.

I hate it when the game lets you cheat like that.

I have to agree with Steve on that, and those who hit elcos with the deck gun? OMG that would be good gunnery indeed, in reality it would be a fluke at best and by the time you've managed to get a fix on firing, their guns would've mowed down several gun crews.
My issue though is ship speed on AI ships, they've got our speeds word perfect, but I've seen flowers & swans and fleet carriers all moving at above 21kts. This admittedly only happens when they are grouped into a TF, but it still happens.

Heheh for sure. I have only used that tactic once in my realistic campaign(and it felt cheap afterwards, took out two corvettes and a destroyer with my deck gun, leaving me with a huge unescorted convoy to play with) - but in my reckless, free for all campaign I often tend to use this :)

Going by the "Anatomy of the Ship" book on the Flower-class corvette...

Early war corvettes:
9 DCs per rail
29 DCs stored in stowage chocks abreast the engine room casing
4 DCs on throwers
Total: 51

Corvettes fitted with magnetic minesweeping arrangements:
10 DCs stored in top rails and 12 DCs stored in bottom rails (two each)
~30 DCs in stowage chocks
4 DCs on throwers
Total: 78

Modified corvettes (1943)
9 DCs per rail (two rails)
8 DCs per storage rail (two rails)
24 DCs stored in stowage chocks abreast engine room casing
4 DCs on throwers
Total: 62

I hope I was specific enough! :rotfl:

cheat ? Let me tell you I didn't find it easy to hit the gun as it was bearing down on me whilst pitching and rolling and at night !