The staff of the Bureau of Construction and Repair was ordered to design a so-called high speed cruiser submarine while he believed that the US Navy needed in the coming future large submarine scouts, A a result was the design dated 23 October 1920 drawn.
Displacement 3.750 tons and as dimensions 550 (waterline) x 42 (waterline) x 27 feet. Maximum speed 18 knots. With a speed of 10 knots a range pf 9.000 miles. Horsepower 13,250 shp. The armament consisted of 2-8” guns, 2-4” anti aircraft guns and 8-21” torpedo tubes (6 fore, 2 aft). Displacement ready dive of 3.750 tons (3.500 tons hull, 500 tons fittings, 2.650 tons engineering, battery 175 tons, 150 tons ammunition, 125 tons equipment, 190 tons water, 750 tons fuel oil full supply margin 335 tons and 275 tons leas ballast.
Source Spring Styles Book 1911-1925 S584-164.
