Military


SS-17 D-1 Narwhal

The Narwhal (SS-17) class originated as Electric Boat design EB-18. These were laid down at Fore River Shipbuilding, Quincy MA on 16 April 1908 and commissioned 1909-10. They were given the pennant numbers D-1, D-2, and D-3 in July 1911 when the Navy abolished submarine names. They were designed to survive flooding in any one compartment. Salmon (SS-19) was completed with updated engineering made possible by a delay in her engine delivery. They were originally designed to fire the short Whitehead MkIII torpedoes; the two original tubes were replaced by four longer tubes in 1912 that allowed them to fire the longer torpedoes.

During World War I re-engining the class with modern diesel engines was proposed. This was completed at Philadelphia October 1918 to February 1919. All three boats were decommissioned in early 1922 and sold for scrap.



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