Proposed by the chiefs of the Bureaus of Construction&Repair and Ordnance on 21 November 1913 for the battleship USS New Mexico (BB-40).(1) Dimensions 605 (waterline) x 97.0 (waterline) x 30.0 feet and normal displacement 33.200 tons. Speed 21 knots. Range 6.000 nautical miles with a speed of 10 knots. Turbine machinery. Horsepower13.800 ship at 21 knots. Number of boiler rooms 3. Armament 4x3-35,6cm/14”50 cal breech loading guns, 22-12,7cm/5” 51 cal quick firing guns and 4-53,3cm/21 submerged torpedo tubes. With torpedo nets. Armour belt main side: (extreme width) 17’-4 5/8”-8’6” (depth below waterline)-15” (thickness). Barbettes (heavy part)- (light part) 14½”-3”S.T.S. Gun turrets (port)- (sides)- (top)- ( rear) 18”- 9/10”-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 8-12-15”. Protective deck total thickness 120. Splinter deck total thickness 60 and 80. Normal displacement consists of Hull complete tons and hull fittings 15.816 tons; Protection 9.347 tons; Steam engineering 2.550 tons; Reserve feed and 2/3 supply 222 tons; Battery 1.664 tons; Ammunition and 2/3 ordnance stores 1.310 tons; Equipment and 2/3 equipment stores and Outfit and 2/3 stores 1.093 tons and Oil fuel, 2/3 supply 1.198 tons.
Note
1.New Mexico-class, consisting of the New Mexico (BB-40) 1915-1947, Mississippi (BB-41) 1915-1956 and Idaho (BB-42) 1915-1947, preceded by the Pennsylvania-class and succeeded by the Tennessee-class.
Source
United States Navy Department. Bureau of Construction and Repair. Spring Styles 1911-1925. S-584-040
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