American design for an unprotected cruiser submarine Type 1 dated 20 October 1920

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The Bureau of Construction and Repair was early October 1920 ordered to make a set of designs of submarine cruisers while in the future there could be a need for large submarine scouts. There was to be a combination of heavy armament and scout aircraft and great diving depths. This design had large storage tubes topside which was considered to be risky for survival if flooded. Displacement 10,000 tons and as dimensions 400 (waterline) x 46 (waterline) x 33.3 feet. Speed 14 knots/5,600shp. Propulsions 4x1,400 nhp diesels diriving generators, 4 main motors. Range 10 knots/16,000 nautical miles. Main armant 1x2&3x2-8” guns, 2-4” anti aircaft guns and 8-21 torpedo tubes (6 fore, 2 aft). Catapult raised when flying off.

Source

U.S. Naval History and Heritage Command 1911-1925 Spring Styles Book. S-584-163