You can download the battlestations 1.1 and look at the dsd-file there. I think you already had the new sounds for the explosion but the dsd-data was missing. You can PM if you need a hand!
By the way, I just sank the Ark Royal carrier in the Blockade of Germany and now have 6 or more destroyers depth charging me (most recent IRAI) and it's absolutely horrible! The sea is exploding and full of search lights, water just keep bursting in and the men are screaming and shouting! Pretty close to Das Boot finally! I think that this encounter won't end happily for us...