Well, let's try this and see if it works. At least what you encountered apparently is just what happened to USS Lagarto, a single direct hit by a DC that just devastated the boat, sinking it with all hands. Looks like they did the right things too, from the full down dive planes and the rudder hard over. Doing all the right things only opens the door of possibility for success, there are no guarantees in life or death. OK, You Tube link attempt. Initiate!
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/AuCxCGoahEU&rel=0&color1=0x2b405b&color2=0x6b8ab6& hl=en&feature=player_embedded&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowScriptAccess" value="always"></param><embed src="http://www.youtube.com/v/AuCxCGoahEU&rel=0&color1=0x2b405b&color2=0x6b8ab6& hl=en&feature=player_embedded&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" allowScriptAccess="always" width="425" height="344"></embed></object>
FAIL! OK, here's a link to the page. The movie is in the lower right corner and well worth spending some time with.
USS Lagarto fate discovered DVD