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Sunday 4 September 2016

Preliminary design for the American battleship USS New Mexico (BB-40) dated 10 November 1913

Pennsylvania-class

Design New Mexico dated 10-11-1913

Tennessee-class


The battleship USS New Mexico (1) was to be built under the Fiscal Year 1915. There were several preliminary designs drawn. This one was presented by the Bureaus of Construction and Repair and Ordnance on 21 November 1913 to the General Board by the chiefs of the Bureaus of Construction and Repair and Ordnance as their preference.

Dimensions 645 (water line) x 94 (outside of plating) x 29.7’ (mean) feet and a displacement of 36.000 tons. Block coefficient 0.661, Longitudinal coefficient 0,674. Armament 4x3-16” breech loading guns in independent sleeves, 20-6” quick firing guns and 8-21” submerged torpedo tubes. The turbine machinery supplied 38.000 ihp allowing a speed of 21 knots and with a speed of 10 knots a range of 8.000 nautical miles.

The armour consisted of a main side belt amidships extreme width 17’4 5/8”, depth below waterline 8.6’ and a thickness of 16” and 8-16”, barbettes 3” S.T.S. (light)-15½” (heavy part), turrets 5” (roof)-9” rear)-9/10” (sides)-18” (port), conning tower proper 16”, fire control 16”, conning tower tube 6 (light)-16” (heavy), uptake protection 8-12-15”, protective deck total 120# and splinter deck total thickness 80# and 60#.

Normal displacement of 36.000 tons: hull complete 17.021 tons, hull fittings ? tons, protection 10.100 tons, steam engineering 2.564 tons, res. feed 2/3 supply 225 tons, battery 1.765 tons, ammunition &2/3 ordinance stores 1.497 tons, equipment&2/3 equipment stores and outfit&2/3 stores 1.112 tons and oil fuel 2/3 supply 1.716 tons.

Source 
The so-called Spring Styles Book 1 (March 1911-September 1925). Naval History and Heritage Command. Lot S-584-39. Preliminary designs prepared by mostly civilians working at the Bureau of Construction and Repair (succeeded by the Bureau of Ships nowadays the Naval Sea Systems Command) under supervision of naval architects of the Navy Construction Corps. A major part of the drawings was presented to the General Board which advices the Secretary of the Navy.

Note
1. Nicknamed “The Queen’. Ordered in 1914 was she laid down at the New York Navy Yard on 14 October 1915, launched on 13 April two years later while christened by Miss Margaret Cabeza De Baca and a year later on 20 May 1918, at Philadelphia between March 1931-January extensively modernized, decommissioned on 19 June 1946 was she on 25 February of the next year stricken. Her scrapping started on 24 November and was July 1948 finished. With a clipper bow. Of the New Mexico-class with as sister ships the Idaho and the Mississippi, which succeeded the Pennsylvania-class and which was at her turn succeeded by the Tennessee-class. The reason that the New Mexico-class was nothing more than an improved design of her predecessor instead of a complete new for a 12-140,5cm battleships was lacking enough budget which was denied by Secretary of Navy Josephus Daniels.