New London Ship and Engine Company
|Fate||Dissolved circa 1925|
|Founder||Lawrence York Spear|
Electric Boat acquired a license to manufacture MAN diesels, probably in 1909. These were initially manufactured by the Fore River Shipyard of Quincy, Massachusetts, where most of Electric Boat's early submarines were built under subcontract. NELSECO was established in Groton to take over diesel manufacturing from Fore River when difficulties were encountered, finishing the work on engines begun by Fore River. It was a subsidiary of the Electric Boat Company for its entire existence. The E- and F-class submarines, launched 1911-12, were initially equipped with these diesels; they were replaced in 1915 as NELSECO's initial efforts were unsatisfactory. The company was incorporated on 11 October 1910, with production starting in July 1911. The company was probably disestablished around 1925, as the last United States S-class submarine was completed in that year, and no subsequent US submarines were equipped with NELSECO engines. Electric Boat had a drought in submarine contracts 1918-1931, which probably caused NELSECO's demise.
- President : Lawrence York Spear
- Vice-president and General Manager : Frank Cable
- Vice-president : Gregory C. Davison
- Secretary and Treasurer : Henry R. Bond
- Directors: Isaac Rice, Elihu B. Frost, Stacey C. Richmond, William H. Reeves and T.A. Scott.
- "Electric Boat". navyleague.org. Retrieved 25 February 2010.
- Weir, p. 15–16
- Gardiner, p. 127–128
- "The New London Ship and Engine Company". The Day. New London, Connecticut. March 11, 1915. p. 3. Retrieved 25 February 2010.
- Hamilton, Robert A. (2015). "EB, the No. 1 sub maker". General Dynamics Electric Boat. Retrieved 29 May 2015.
- Personal section, The Marine Review May 1913, p. 170
- Gardiner, Robert; Gray, Randal (1985). Conway's All the World's Fighting Ships, 1906-1921. London: Conway Maritime Press. ISBN 0-85177-245-5.
- Weir, Gary E.; Allard, Dean C. (2000). Building American Submarines, 1914-1940. The Minerva Group, Inc. ISBN 978-0-89875-066-9. Retrieved 29 May 2015.
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