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In page United States D-class submarine:

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  • USS D-1 (SS-17) was laid down on 16 April 1908, launched on 8 April 1909 and was commissioned on 23 November 1909 as Narwhal. Renamed D-1 on 17 November 1911, the submarine was decommissioned on 8 February 1922 and sold afterwards.[1]
  • USS D-2 (SS-18) was laid down on 16 April 1908, launched on 16 June 1909 and was commissioned on 23 November 1909 as Grayling. Renamed D-2 on 17 November 1911, the submarine was decommissioned on 18 January 1922 and sold afterwards.[2]