The deepest I've read is in a post by AVGWarhawk - USS Torsk, Mark28 torp, 400 feet. Here's the link:
http://www.subsim.com/radioroom/showthread.php?t=116106
At work, don;t have time to research sub issues on my own, so I'm taking in everything I can find on this great forum.
... and to think I played SHIII without knowing about this forum, editing my .cfg files by myself, lol. But I did get here in time to get the Grey Wolves expansion
