And something more. It has been written about that long ago, but just to remind. There's a stock SH III bag - if you save your game during "sinking operation of any ship" (f.e. after you start fire from deck gun or the ship had been hit by torpedo but not sunk) and then you save your game and load after some time - when your target will sunk, you won't get any credit for it, message " she's going down" and sunk ship entry in your kpt. log wil not spawn as well. Annoying bug, happened to me many times.
