ASROC Nuclear Depth charge.ASROC Nuclear Depth charge.I was waiting for that picture to appear. I was on the USS Preston DD795 during that test and I think that picture was taken from our bridge. We were about 4500 yds from surface zero with our stbd quarter facing the blast when the thing went off, shook hell out of us and damaged some equipment. The thing was called an ASROC, Nothing more than a 15KT (W44) depth charge with a rocket motor attached. Went off about 670 ft down 370 NM west of San Diego on May 11 1962 and scared hell out of a bunch of us. The ship in the picture is the USS Agerholm DD826 which launched the weapon. This was the Swordfish part of the Dominic series of tests in the Pacific. This info was declassified on about 1988.