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Thursday, 2 January 2025

American battle cruiser design No. 145 dated 25 August 1915

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Sent on 27 August 1915 to the General Board. The design accepted for the Fiscal Year 1917 resembled this design. Dimensions 745 (waterline) x 100 (waterline) x 30.5 feet. Speed 30 knots. Range 10 knots/12,000 nautical miles. Horsepower 56,300 ehp/30 knots. Turbine propulsion. Number of boiler rooms 9. Armament 4x2-35.56cm/14” B.L.R. guns, 12-15.4cm/6” quick firing guns, 4-7.62cm/3” anti aircraft guns and 4-53.34cm/21” torpedo tubes. Armour: main side belt 20’(extreme width)-8’6” (depth below waterline)-5” (thickness). Heavy part barbettes 10”. Turrets 12” (port)-8” (sides)-5” (top)-5” (rear). Conning tower proper 12”, heavy part tube 8”. Uptake protection 8”. Splinter deck 2”. Total thickness protective deck 3”.

If a crowning 5” thick deck was fitted for protection of the steering gear was the 35,500 tons increased with anoth around 1,300 tons.

Normal displacement 35,500 tons

Hull complete with fittings 16,994

Protection 4,830

Steam engineering 7,120

Reserve feed 2/3 supply 751

Battery 1,135

Ammunition and 2/3 ordnance stores 978

Equipment and 2/3 equipment stores 523

Outfit and 2/3 stores 750

Oil fuel 23 full supply 2,520

Margin -101

Source

U.S. Naval History and Heritage Command 1911-1925 Spring Styles Book. S-584-082. 

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