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1. Bill also known as Mr. Anonymous says:
   21 Feb 2009 09:42:02 AM
   
   Info on above photo: Profile I-401 after her surrender to the U.S. Navy 1945. Photo shows the large combined hanger/conning tower, the boat was armed with three 25mm triple antiaircraft guns. A 5.5-in. deck gun fitted aft. Eight 21-in. bow torpedo tubs and 20 torpedos. In the hanger, three Aichi M6A Seiran attack bomber floatplanes could be accommodated. Despite the resources devoted to this class and the number of design innovations, these boats offered little to the Japanese was effort. The boats were taken to Pearl Harbor for study, and were used as targets in May and June 1946. A third boat I-402, saw no action before Japan's surrender and was scuttled in April 1946 off Japan. (Sen-Toku or Special Submarine) Specifications: Number of boats in class 3 (I-400 to I-402) Displacement: 5,223 tons surfaced, 6,560 tons submerged. Dimensions: Length 400ft. Beam 39ft. 4in. Draft 23ft. Machinery: Four diesels with 7,700 shp driving two shafts, electrical motors with 2,00 shp. Speed: 18.75kt surfaced, 6.5kt submerged. Range:30,000nm. Operating depth: 330ft. Crew 144
2. BILL says:
   22 Feb 2009 09:58:08 AM
   
   The I-400 class submarines, were the largest conventual powered boats during W.W.II. The largest submarines today, are the nuclear powered attack and missle carrying submarines.

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