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Tuesday, 16 February 2016
Preliminary design for an American submarine chaser dated 28 November 1917
Drawing S 584-122 made for a submarine chaser fitted out with diesel machinery as response on a proposal dated 28 October 1917 for such a vessel done by the Special Board on Anti-Submarine Devices. David W. Taylor (1) which was then navy chief constructor made some drawings for a design dated 5 November 1917 reviewed on 26 December. The famous Henry Ford (2) spoke Taylor 2 days later which resulted in the so-called Eagle Boat submarine chaser based on the turbine machinery version of this concept.
With a displacement of 431 (light)-500 (normal)-562 (emergency) tons and as dimensions 200 (overall) x 24 (extreme on waterline) x 6.9 x 8 (deck height) feet. Freeboard 7.9 (maximum A.P.)-10.6 (at side M.P.)-11.9 (maximum at stem) feet. Total depth at M.P. measured at of uppermost strength D.K. 17.8 feet. Deck height 8 feet. Metacenter above Base 10.36, C. of G. above Base 9.10, moment to trim 1 93 Ft-tons and trim 29.6 by stern. Tons per inch immersion 8.0. Coefficients 0.587 (longitudinal)-0.920 (midship). Displacement-length 62.5. Normal displacement=500 tons: weight hull 174,0 tons, hull fittings 28,9 tons, steam engineering 187,0 tons, battery 12,0 tons, ammunition 26,7 tons, equipment 15,0 tons, outfit and 2/3 stores 36,2 tons, fuel oil, 2/3 supply 16,0 tons and margin 4,2 tons. The diesel supplied 2.000 ehp allowing a speed of 19,5 knots and with a speed of 10 knots a range of 3.500 nautical miles. The armament consisted of 2-4” guns.
Notes
1. David Watson Taylor (4 March 1864 Louisa County, Virginia, USA- 28 July 1940 Washington, D.C. USA), dismissed in the rank of rear admiral, the men behind the so-called Taylor Standard Series of 80 models. Chief Bureau of Construction and Repair since 14 December 1914 until 1922.
2. Henry Ford (30 July 1863 Greenfield Township, Michigan, USA-7 April 1947 Fair Lane, Dearborn, Michigan, USA), founder of Ford Motor, although being pacifist started his company in 1917 with manufacturing weapons included submarine chasers.
Source the so-called Spring Styles Book 1 (March 1911-September 1925). Naval History and Heritage Command. Lot S-584. 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 is presented to the General Board which adviced the Secretary of the Navy.