remains stored at Hampton Roads until final disposition plans are decided on by the US Navy. Cruisers † A dagger after a completion date indicates that portions of the hull were preserved as memorials. See the individual articles for details. (note) ex-Long Beach has been partially dismantled and remains moored in Puget Sound Naval Shipyard in 2018. Attack submarines Some of these submarines (the George Washington class) were fleet ballistic missile boats for the vast majority of their careers. However, they were briefly converted to SSNs before decommissioning and arrival at PSNS, and so are listed under that designation here. The nuclear-powered research submersible NR-1 is also included in this list. {| class="sortable wikitable" |- !Ship name (Hull number) !Start date !Completion date/status |- |ex-Seawolf (SSN-575) |1 October 1996 |30 September 1997 |- |ex-Skate (SSN-578) |14 April 1994 |6 March 1995 |- |ex-Swordfish (SSN-579) |Unknown |11 September 1995 |- |ex-Sargo (SSN-583) |14 April 1994 |5 April 1995 |- |ex-Seadragon (SSN-584) |1 October 1994 |18 September 1995 |- |ex-Skipjack (SSN-585) |17 March 1996 |1 September 1998 |- |ex-Triton (SSRN-586) |1 October 2007 |30 November 2009 |- |ex-Halibut (SSGN-587) |12 July 1993 |9 September 1994 |- |ex-Scamp (SSN-588) |1990 |9 September 1994 (the first) |- |ex-Sculpin (SSN-590) |1 October 2000 |30 October 2001 |- |ex-Shark (SSN-591) |1 October 1995 |28 June 1996 |- |ex-Snook (SSN-592) |1 October 1996 |30 June 1997 |- |ex-Permit (SSN-594) |30 September 1991 |20 May 1993 |- |ex-Plunger (SSN-595) |5 January 1995 |8 March 1996 |- |ex-Barb (SSN-596) |Unknown |14 March 1996 |- |ex-Tullibee (SSN-597) |5 January 1995 |1 April 1996 |- |ex-George Washington (SSBN/SSN-598) |Unknown |30 September 1998† |- |ex-Patrick Henry (SSBN/SSN-599) |1 October 1996 |31 August 1997 |- |ex-Robert E. Lee (SSBN/SSN-601) |Unknown |30 September 1991 |- |ex-Pollack (SSN-603) |9 February 1993 |17 February 1995 |- |ex-Haddo (SSN-604) |Unknown |30 June 1992 |- |ex-Jack (SSN-605) |Unknown |30 June 1992 |- |ex-Tinosa (SSN-606) |15 July 1991 |26 June 1992 |- |ex-Dace (SSN-607) |Unknown |1 January 1997 |- |ex-Ethan Allen (SSBN/SSN-608) |Unknown |30 July 1999 |- |ex-Sam Houston (SSBN/SSN-609) |1 March 1991 |3 February 1992 |- |ex-Thomas A. Edison (SSBN/SSN-610) |1 October 1996 |1 December 1997 |- |ex-John Marshall (SSBN/SSN-611) |22 July 1992 |29 March 1993 |- |ex-Guardfish (SSN-612) |Unknown |9 July 1992 |- |ex-Flasher (SSN-613) |Unknown |11 May 1994 |- |ex-Greenling (SSN-614) |30 September 1993 |18 April 1994 |- |ex-Gato (SSN-615) |Unknown |1 November 1996 |- |ex-Haddock