Design S584-174 (Spring Styles Book 1911-1925) dated from 28 February 1921 and used as start document for the Pensacola (CL-24) class (1) designs handed over to the General Board in March 1921. Design considered to be too large for being affordable. Displacement 12.000 tons and as dimensions 635’ (waterline) 57‘6“ x 21’6”. Freeboard maximum at stem 29’, A.P. 14’and total depth at M.P. measured at of uppermost strength DK 37‘. Metacenter above base 25,00, C. of G. above base 20,71 and G.M. 4,29. Speed 34,5 knots and with a speed of 10 knots a range of 8.000 nautical miles. The horsepower delivered by red. gear turbines and the 12 boilers divided over 5 boiler rooms was 62.500 ehp. The armament was to consist of 4x2-8” guns, 4-5” short anti aircraft guns and 2x3-21” torpedo tubes. Barbettes not protected by armour, a 3” protective deck and a 3” thick splinter deck above the magazines.
Displacement 12.000 tons: hull no protection 4.800 ton, hull fittings 590 ton, protection (all) 1.450 ton, steam engineering 2.125 ton, 2/3 reserved feed 130 ton, battery 400 ton, ammunition 270 ton, equipment 275 ton, outfit and 2/3 full supply 360 ton, fuel oil 2/3 full supply 1.025 ton and margin 575 ton. Coefficients at normal displacement: longitudinal 0,582, midship 0,92 and displacement: length 46,9.
Note
1. Laid down at the New York Navy Yard on 27 October 1926, launched on 25 April 1929, commissioned on 6 February 1930 and used as target ship in 1948. Classified as heavy cruiser with a standard displacement of 9.200 and an armament of 2x3+2x2-20,3cm/8” guns.
