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NavSource Online: Submarine Photo Archive

N-4 (SS-56)

Radio Call Sign: November - Zulu - Hotel

N-4 Class Submarine: Laid down, 24 March 1915, at Lake Torpedo Boat Co., Bridgeport, CT.; Launched, 27 November 1916; Commissioned, USS N-4, 15 June 1918, at New York Navy Yard; Designated (SS-56), 17 July 1920; Decommissioned, 22 April 1922, at Philadelphia Navy Yard, Philadelphia, PA.; Struck from the Naval Register, 25 September 1922; Final Disposition, sold for scrapping 25 September 1922 to Joseph G. Hitner of Philadelphia, PA.

Specifications: Displacement, surfaced: 340 t., submerged: 415 t.; Length 147' 3"; Beam 14' 6"; Draft 12' 4"; Speed, surfaced 13 kts, submerged 11 kts; Maximum Depth 200'; Complement 3 Officers, 26 Enlisted; Armament, four 18" torpedo tubes, eight torpedoes; Propulsion, diesel-electric, Busch Sulzer Brothers Diesel Engine Co., diesel engines, 600 hp, Fuel Capacity, 5,976 gals., Diehl Manufacture Co. electric motors, 300 hp, Battery Cells 120, single screw.
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N-4 77k N-4 (SS-56), with N-2 (SS-54) , at Lake Torpedo Boat Co., Bridgeport, CT., 16 January 1917.
US Navy photo # 19-N-829, from the National Archives and Records Administration (NARA), courtesy of Daniel Dunham.
N-4 75k N-4 (SS-56) portside view, outboard with O-12 (SS-73) inboard, at Lake Torpedo Boat Co., Bridgeport, CT., 16 January 1917.
US Navy photo # 19-N-871B, from the National Archives and Records Administration (NARA), courtesy of Daniel Dunham.
N-4 96k N-4 (SS-56) bow view at rest, July, 1917 at Lake Torpedo Boat Co., Bridgeport, CT.
US Navy photo # 19-N-862, from the National Archives and Records Administration (NARA), courtesy of Daniel Dunham.
R-24 134k PDF entitled "How the Diesel engine came to America." Photo courtesy of subvetpaul.com.
N-5, 4, & O-12 110k N-4 (SS-56), N-5 (SS-57), & O-12 (SS-73) tied up to dock at Lake Torpedo Boat Co., Bridgeport, CT., 1 April 1918. US Navy photo # 19-N-884, from the National Archives and Records Administration (NARA), courtesy of Daniel Dunham.
N-4 171k N-4 is shown off the New London Submarine Base, Groton, Connecticut in 1919. Photo i.d. courtesy of Robert Hurst.
US Navy photo courtesy of Mike Green.

View the N-4 (SS-56)
DANFS history entry located on the Haze Gray & Underway Web Site.
Crew Contact And Reunion Information
Not Applicable to this Vessel
Additional Resources and Web Sites of Interest
PigBoats.COM TM, a Historic Look at Submarines

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