No Subject

I tested my sub to 10 feet in a small pond, mostly to check for leaks, and to make sure everything worked right.. I then got some advise from 2 experienced subbers, and they both suggested to do the unmanned deep water test.. I thought it over, and decided that I had too much money and time tied up, to just leave the sub there, if there was a problem.. again, the problem could be as simple as a leak, not a total collapse.. I contacted a local company that pressure treats lumber, and after some talking, they decided they could help me out. I tested my sub in their pressure chamber, after being convinced that a failure of my sub, would not damage any of their equipment..for me this was the best way to go, but the longest few hours of my life wondering if all my hard work would pay off.. The only problems I encountered was the pressure went up very fast, and came off even faster.. 0-400 feet in 15 seconds, 400 - 0 feet in 0.5 seconds..