Torpedoes Mark 14 and 23 Types, OP 635, 1945, is the basic service manual for the principle U.S. torpedo of WW II. It is also shows all the key elements of a successful steam torpedo and represents the peak of U.S. WW II torpedo technology.Liked to run ~10 ft too deep, adjustable though. Circled back sometime, could be bad if you had a working detonator. Magnetic exploders going boom too early. Anyway, they were hold overs and were on the boat for about a year. Got rid of them right after we got back from our 2nd northern run in 8 months, Jan-Fed 1980 upkeep New London, and the coldest day to off-load I have had the displeasure to experience.