This design is part of a whole series of designs for an aircraft carrier with a displacement varying between 10.000-29.250 tons depending on the restrictions of the Washington Treaty of 1922. This design with a two-level hangar was never realized.
Dimensions 680.0’ (water line) x 101.0’ (waterline) x 29.0’ and a displacement of 27.000 (treaty)-29.250 (normal)tons. Electric drive machinery with 6 boilers divided over 2 boiler rooms supplying 34.500 ehp allowing a speed of 27 knots and with a speed of 10 knots a range of 10.000 nautical miles. Main hangar capacity 11.400 square feet and 16’dk high and stowage 10.600 square feet and 20’ dk high. Coefficients at normal displacement longitudinal .535, block .514, midship .96 and displacement-length 93.024. The armament consisted of 3x3-8” 55cal guns, 4 x1021” torpedo tubes and 12-5” 25cal anti aircraft guns. The armour consisted of a main side belt with a width of 101’.0’ and a thickness of 5-8”. Barbettes heavy part protected by 3”. Turrets 3”(sides and rear)-“4½ (top)-6” (port). Coning tower tube 2”. Furthermore was a 2½” thick protective deck over machinery and magazines and a 3-4½” thick splinter deck available. Displacement 27.000 (treaty)-29.250 tons (normal): hull 16.150 tons, hull fittings 2.350 tons, protection 1.888 tons, steam engineering 2.580 tons, reserve feed 250 tons, battery 698 tons, ammunition 734 tons, equipment 850 tons, outfit and 2/3 stores 850 tons, aeronautics 200 tons, fuel oil 2/3 full supply 2.000 tons and margin 700 tons.
Source
The so-called Spring Styles Book 1 (March 1911-September 1925). Naval History and Heritage Command. Lot S-584-183. Preliminary designs prepared by mostly civilians working at the Bureau of Construction and Repair (succeeded by the Bureau of Ships nowadays the Naval Sea Systems Command) under supervision of naval architects of the Navy Construction Corps. A major part of the drawings was presented to the General Board which advices the Secretary of the Navy.
