USS San Juan (SSN-751)

From Wikipedia, the free encyclopedia
Jump to: navigation, search
For other ships with the same name, see USS San Juan.
USS San Juan (SSN-751)
USS San Juan (SSN-751) returns to port
USS San Juan in Groton, Connecticutian waters in April 2003.
United States
Name: USS San Juan
Namesake: The City of San Juan, Puerto Rico
Awarded: 30 November 1982
Builder: General Dynamics Electric Boat
Laid down: 9 August 1985
Launched: 6 December 1986
Sponsored by: Mrs. Sherrill Hernandez
Commissioned: 6 August 1988
Out of service:
  • 8 April 2010 to 4 August 2011,
  • engineered overhaul
Homeport: Groton, Connecticut
Identification: 21312[1]
Motto: Technology and Tradition
Status: in active service
  • Assignment: COMSUBLANT
  • North Atlantic, Groton, CT
  • Current Comdr: John Craddock
  • 1st Comdr 1988: Charles Young[2]
Badge: 751insig.png
General characteristics
Class and type: Los Angeles-class submarine
  • 5,790 long tons (5,883 t) light
  • 6,197 long tons (6,296 t) full
  • 407 long tons (414 t) dead
Length: 110.3 m (361 ft 11 in)
Beam: 10 m (32 ft 10 in)
Draft: 9.4 m (30 ft 10 in)
Installed power: nuclear
Propulsion: S6G nuclear reactor
Complement: 12 officers, 98 men
Sensors and
processing systems:
BSY-1 sonar suite combat system
  • 4 × 21 in (533 mm) torpedo tubes
  • 12 × vertical launch Tomahawk missiles

USS San Juan (SSN-751), a Los Angeles-class submarine, is the third ship of the United States Navy to be named for San Juan, Puerto Rico. The contract to build her was awarded to the Electric Boat Division of General Dynamics Corporation in Groton, Connecticut on 30 November 1982 and her keel was laid down on 9 August 1985. She was launched on 6 December 1986 sponsored by Mrs. Sherrill Hernandez, and commissioned on 6 August 1988, with CDR Charles Young in command.

As of December 2014 the San Juan is commanded by CDR John Craddock.[3]


San Juan was the first Los Angeles class (688-class) submarine to receive a number of significant improvements to the class's basic design, creating the 688I (for "improved 688"). San Juan and all following submarines in her class are quieter, incorporated an advanced AN/BSY-1 sonar suite combat system. The improvements also included the ability to lay mines from the torpedo tubes. The San Juan 's sail was also strengthened, enabling the ability to break through ice.[4]

First through ice surfacing[edit]

In 1993 the San Juan conducted the first through-ice surfacing for a 688i class submarine in the Arctic.[5]

USS San Juan through-ice surface
Arriving Souda Bay, Crete, Greece, May 2007

Collision with USS Kentucky[edit]

On 19 March 1998 off the coast of Long Island, New York the submerged San Juan collided with the surfaced fleet ballistic missile submarine USS Kentucky (SSBN-737). There were no injuries reported with the collision.[6]

Lost communication[edit]

On 13 March 2007, San Juan was the subject of a search and rescue mission by elements of the Enterprise Carrier Strike Group when a red flare was spotted in her projected vicinity, suggesting an emergency. Communications were established by the early hours of the next day when San Juan surfaced, and no problems were indicated.[7]

Visit to South Africa[edit]

On 4 November 2009 the San Juan arrived at Simon's Town, South Africa. The ship engaged in at-sea maneuvers with the South African Navy for the first time in U.S. history.[8]

2010 overhaul[edit]

San Juan undocking at PNSY, 2011

The San Juan and crew arrived at Portsmouth Naval Shipyard (PNSY), Maine, on 8 April 2010 for an engineered overhaul (EOH); for maintenance and receive system upgrades.[9] On 4 August 2011, PNSY Shipyard workers successfully undocked San Juan one day early from the overhaul.[10]

As of 2012 the San Juan was assigned to Submarine Group Two. Submarine Group 2 was disestablished in 2014, and ultimately the submarine is part of Submarine Force, U.S. Atlantic Fleet (COMSUBLANT).



  1. ^ USS San Juan, Retrieved 12 February 2012
  2. ^ USS San Juan Main page, Retrieved 12 February 2012
  3. ^ Stars & Stripes. "Attack submarine commander relieved of duty". Stars & Stripes. Retrieved 4 August 2014. 
  4. ^ "USS San Juan arrives at Portsmouth Naval Shipyard". 9 April 2010. Retrieved 12 February 2012. 
  5. ^ "Arctic Submarine Laboratory Historical Timeline". US Navy. Retrieved 13 February 2012. 
  6. ^ "2 U.S. submarines collide off Long Island". CNN. 19 March 1998. Retrieved 12 February 2012. 
  7. ^ "Billion-Dollar U.S. Sub Disappears Overnight for Several Hours". ABC News. Retrieved 2009-01-20. 
  8. ^ "San Juan Makes Historic Visit to South Africa". US Navy. 
  9. ^ USS San Juan Arrives at PNSY for Overhaul, retrieved 12 February 2012
  10. ^ Portsmouth Naval Shipyard successfully undock the USS San Juan, retrieved 12 February 2012
  11. ^ "Unit Awards for San Juan SSN 751". US Navy. Retrieved 20 September 2016. 
  12. ^ "USS San Juan Receives Battle 'E'". US Navy. Retrieved 12 February 2012. 
  13. ^ "CSS-12 Commodore presents USS San Juan (SSN-751) with Battle E". US Navy. Retrieved 19 January 2017. 

This article includes information collected from the Naval Vessel Register, which, as a U.S. government publication, is in the public domain.
 This article incorporates public domain material from websites or documents of the United States Navy.

External links[edit]