class submarine class submarine san class tanker transport submarines built imperial_japanese_navy world war called type submarine type submarine type shortened designed submarines support flying boats forward areas time submarine finished capability longer needed converted oil tanker boat sunk return leg second voyage second boat destroyed american air raid completed additional submarines planned cancelled laid design description class submarines ordered 5th fleet program support flying boats areas shore facilities seaplane operate designed support flying boats fuel ammunition water replacement submarines length meters overall beam meters draft meters displaced long tons surface long tons submerged diving depth meters crew officers enlisted men plus accommodations boats propellers driven brake horsepower diesel engine shaft horsepower electric motor arrangement gave class submarines maximum speed knots mph surfaced knots mph submerged range nautical miles knots mph surface nmi knots mph submerged gave endurance days boats equipped inch torpedo tubes bow carried torpedoes surface combat designed carry centimeter deck gun unavailable submarines construction millimeter type mortars substituted submarines fitted seven type anti aircraft guns twin single mounts class submarines initially equipped carry long tons aviation gasoline long tons fresh water pound bombs bombs aircraft torpedoes torpedoes replaced equal number torpedoes submarine boats construction service actually laid submarines cancelled laid modified completion oil tanker boat round trip singapore carrying gallons imp gal aviation fuel sunk return leg second trip coordinates american submarine july percent complete destroyed air raid boeing heavy bombers july books carpenter norman submarines imperial_japanese_navy london isbn peter warships imperial_japanese_navy maryland isbn mark imperial_japanese_navy submarines new vanguard oxford isbn
I-351-class submarine