American battleship design Colorado-class dated 20 March 1916

Design d.d. 20 March 1916

Tennessee-class

South Dakota-class

North Carolina-class

A design sent to the Navy Department on 20 March 1916 for the battleships to be built under Fiscal Year 1917 namely the Colorado-class. (1) It was in fact an improved Tennessee-design and selected by the Secretary of Navy on 22 August 1916. Dimensions 600 (waterline) x 97.5 (waterline) x 30.4 feet and normal displacement 32.400 tons. Electric drive machinery. Horsepower 16.700 ehp at 21 knots. Number of boiler room 8. Armament 4x2-40,6cm/16””50 cal guns, 22-12,7cm/5” 51 cal quick firing guns, 4 high power and 4 light anti aircraft guns (Tennessee and California had 4-7,6cm/”guns) and 4-53,3cm/21 submerged torpedo tubes. None torpedo nets. Armour belt main side: (extreme width) 17’0”-8’10”(depth below waterline)-13½”, 13½”and 9” (thickness). Barbettes (heavy part)- (light part) 13”-4½”. Gun turrets (port)- (sides)- (top)- ( rear) 16”-10/9”-5”-9”. Conning tower thickness (proper)- (top) 16”-8”. Fire control tower thickness 16”. Conning tower tube thickness (heavy part)- (light part) 16”-6”. Uptake protection thickness 9-13”. Protective deck total thickness 140. Splinter deck total thickness 60. Normal displacement consists of: Hull complete and hull fittings 16.220 tons; Protection 8.583 tons; Steam engineering 1.805 tons; Reserve feed and 2/3 supply 180 tons; Battery 1.571 tons; Ammunition and 2/3 ordnance stores 1.298 tons; Equipment and 2/3 equipment stores 465 tons; Outfit and 2/3 stores 625 tons; Oil fuel, 2/3 supply 1.581 tons and Margin 72 tons

Note

1. Consisting of the Colorado (BB-45) 1919-1959, Maryland (BB-46) 1917-1959, Washington (BB-47) never completed and West Virginia (BB-48) 1920-1959, preceded by the Tennessee-class and succeeded by the planned South Dakota-class and the actual built North Carolina-class.

Source

United States Navy Department. Bureau of Construction and Repair. Spring Styles 1911-1925. S-584-095