Design drawn after the Special Board on Anti Submarine Devices asked on 28 October 1917 for such a vessel. Navy Chief Constructor David W. Taylor (1) supplied on 5 November general technical details resulting in a design on 22 November. After seeing this design on 26 December Taylor discussed it two days later with Henry Ford (2). It became a principal base for the Eagle Boat in
Normal displacement 475 tons and as dimensions 200 (waterline/overall) x 24’ (extreme on waterline) x 6’6”. Freeboard maximum at Stem 12’0”and A.P. 8’0” and freeboard at side M.P. 10’9”. Total depth at M.P. measured at . Of uppermost strength D.K. 17’8”. Deck height 8’. Metacenter above base 10.50, C. of G. above base 9.15, G.M. 1.35;, moment to trim 1” 93 ft-tons and trim even keel. Tons per inch immersion 8.0. Coefficient at normal displacement of 475 tons longitudinal .582, midship .917 and displacement-length 59.4.
The turbine machinery delivered 2.460 ehp at a speed of 21 knots. With a speed of 10 knots was the range 3.500 nautical miles. Length boiler room for 16’6” and aft 16’6” and engine room 33’0”, total machine space 66’0”. Two boiler rooms/
Weight hull 174.0, hull fittings 28.9, steam engineering 93.0, reserve feed 10.0, battery 14.2, ammunition 21.4, equipment 15.0, outfit and 2.3 stores 36.2, full oil 2.3 full supply 65.0 and margin 17.3, total normal displacement 475 tons, light 337 tons and emergency 551 tons.
The armament consisted of 1-5” gun and 1-3” anti aircraft gun.
Source
The so-called Spring Styles Book 1 (March 1911-September 1925). Naval History and Heritage Command. Lot S-584-11. 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.
Notes
1. David Watson Tyler (4 March 1864 Louisa County, Virginia, USA-28 July 1940 Washington, D.C., USA), naval architect and engineer ending his naval career in the rank of rear admiral.
2. Henry Ford (30 July 1863 Greenfield Township, Michigan, USA-7 April 1947 Fair Lane, Dearborn, Michigan, USA), industrialist, well known for developing mass production while use the assemble line technique.
