Colorado-class©Warshipsresearch.blogspot.com
South Dakota-class©Warshipsresearch.blogspot.com
To be financed under the Fiscal Year 1918. The design was transferred to the General Board on 21 December 1916. It followed the Colorado-class in layout although ist was armed with 4x3-16” cal 50 guns in stead of twin 16” cal 45 guns turrets resulting an increased length and was the origin of the design process for the South Dakota-class.
Dimensions 660 (waterline)-684 (over all) x 105 (waterline)-102’3.5 “(molded on waterline) x 32 feet and a displacement of 41,500 tons. Freeboard maximum at stem 26’0”and 18’0” at A.P. and at side (MDk) M.P. about 17’0”. Speed 23 knots with about 29,800 hp. Cruising radius 10 knots/10,000 nautical miles. Electric drive propulsion. Twelve boiler rooms. Armament consisted of 12-16” 50 cal guns, 2021” torpedo tubes, 16-5” guns and 4-3” high power anti aircraft guns. Main side belt armour 17’5.5” extreme width-8’8” depth below waterline-13.5 and 13.5-8” thickness.
Barbettes thickness 13.5”)heavy part)-4,4” (light part),
Turrets thickness 18”(port)-9-10”(sides)-5’” (top)-9”(rear).
Conning tower proper thickness 16”and top8”.
Fire control tower thickness 16”.
Conning tower tube thickness heavy part 16” and light part 6”.
Uptake protection thickness 113.5” and 9”. Protective deck 140# and splinter deck 60#.
Normal displacement 41,500 tons:
Hull 18,414
Hull fittings 2,225
Portection 10,150
Steam engineering 2,800
Reserve feed 335
Ammunition 1,812
Equipment 560
Outfit and 2/3 store 747
Fuel oil 2/3 full supply 1,525
Margin 26
Source
S. Naval History and Heritage Command. Bureau of Ships Spring Styles Book 1 1911-1925. S-584-104 preliminary design 173.
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