- References
{{Infobox ship image| Ship image=USS SC-40.jpg | Ship caption=Submarine Chaser No. 40, later SC-40, in the North Sea in 1919 during minesweeping operations to clear the North Sea Mine Barrage after World War I.
}}{{Infobox ship career | Hide header= | Ship country=United States | 1918}} | Ship name=*USS Submarine Chaser No. 40 (1917-1920) | Ship builder=New York Navy Yard, Brooklyn, New York | Ship laid down= | Ship launched= | Ship acquired= | Ship commissioned=13 February 1918 | Ship in service= | Ship out of service= | Ship reclassified=SC-40 on 17 July 1920 | Ship struck= | Ship reinstated= | Ship honours= | Ship fate=Sold 14 October 1924 | Ship status= | Ship notes=
}}{{Infobox ship characteristics | Hide header= | Header caption= | Ship class=SC-1-class submarine chaser | Ship displacement=*77 tons normal | 110|ft|m|abbr=on}} overall- {{convert|105|ft|m|abbr=on}} between perpendiculars
| 14|ft|9|in|m|abbr=on}} | 5|ft|7|in|m|abbr=on}} normal- {{convert|6|ft|6|in|m|abbr=on}} full load
| 220|bhp|abbr=on}} Standard Motor Construction Company six-cylinder gasoline engines, three shafts, {{convert|2400|USgal|L}} of gasoline; one Standard Motor Construction Company two-cylinder gasoline-powered auxiliary engine | 18|kn|km/h}} | 1,000|nmi|km}} at {{convert|10|kn|km/h}} | Ship complement=27 (2 officers, 25 enlisted men) | Ship armament=- 1 × 3-inch (76.2 mm)/23-caliber gun mount
- 2 × Colt .30 caliber (7.62 mm) machine guns
- 1 × Y-gun depth charge projector
| Ship sensors=One Submarine Signal Company S.C. C Tube, M.B. Tube, or K Tube hydrophone | Ship notes=
}} | USS SC-40, until July 1920 known as USS Submarine Chaser No. 40 or USS S.C. 40, was an SC-1-class submarine chaser built for the United States Navy during World War I. SC-40 was a wooden-hulled 110-foot (34 m) submarine chaser built at the New York Navy Yard at Brooklyn, New York. She was commissioned on 13 February 1918 as USS Submarine Chaser No. 40, abbreviated at the time as USS S.C. 40. {{expand section|SC-40{{'}}s operational history from February 1918 to October 1924|date=February 2011}}In 1919, Submarine Chaser No. 40 participated in North Sea minesweeping operations to clear the North Sea Mine Barrage after World War I. When the U.S. Navy adopted its modern hull number system on 17 July 1920, Submarine Chaser No. 40 was classified as SC-40 and her name was shortened to USS SC-40. On 14 October 1924, the Navy sold SC-40 to the Florida Boat Company of Washington, D.C.. References - {{DANFS|http://www.history.navy.mil/danfs/sc1/sc-1-sc-100v1.htm}}
- NavSource Online: Submarine Chaser Photo Archive: SC-40
- The Subchaser Archives: The History of U.S. Submarine Chasers in the Great War Hull number: SC-40
- Woofenden, Todd A. Hunters of the Steel Sharks: The Submarine Chasers of World War I. Bowdoinham, Maine: Signal Light Books, 2006. {{ISBN|978-0-9789192-0-7}}.
{{SC-1 class submarine chasers|state=collapsed}}{{DEFAULTSORT:SC-040}}{{US-mil-ship-stub}} 4 : SC-1-class submarine chasers|World War I patrol vessels of the United States|Ships built in New York (state)|1918 ships |