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United States Naval Forces Southern Command
Navso crest2.gif
United States Naval Forces Southern Command Emblem
Active 1963 - 1975; 1985 - 1991; 2000 - present
Country United States
Branch US Navy
Type Theater Command
Part of U.S. Southern Command (USSOUTHCOM)
Garrison/HQ Naval Station Mayport, Florida
Rear Admiral Sinclair M. Harris

U.S. Naval Forces Southern Command (also known as USNAVSO) is the naval element of United States Southern Command (USSOUTHCOM). Its areas of operation include South America, Central America, the Caribbean and surrounding waters. Its headquarters are located at Naval Station Mayport, Florida. USNAVSO is currently under the command of Rear Admiral Sinclair M. Harris.[1]


USNAVSO and U.S. Fourth Fleet supports USSOUTHCOM joint and combined full spectrum military operations by providing principally sea based, forward presence to ensure freedom of maneuver in the maritime domain, to foster and sustain cooperative relationships with international partners and to fully exploit the sea as maneuver space in order to enhance regional security and promote peace, stability, and prosperity in the Caribbean, Central and South American regions.


Commander, USNAVSO (COMUSNAVSO) was re-established in February 2000, with headquarters at Naval Station Roosevelt Roads, Puerto Rico which in early 2004 relocated to Naval Station Mayport, Florida.[2] COMUSNAVSO serves as a main link between the U.S. Navy and the navies of South America, Central America, and the Caribbean, and is at the forefront of U.S. engagement in the Western Hemisphere. The command consolidates functions previously conducted by the Commander, Western Hemisphere Group, formerly in Mayport, Florida and the Commander, South Atlantic Force, U.S. Atlantic Fleet (COMSOLANT), formerly located at Naval Station Roosevelt Roads, Puerto Rico.

COMUSNAVSO was built around the core of COMSOLANT, that was established in June 1958 with headquarters in Trinidad and Tobago and was moved to Roosevelt Roads, Puerto Rico in 1973. COMSOLANT had participated in annual “UNITAS” deployments around South America since 1960, and routinely deployed to Africa for the West African Training Cruise since 1980.

In addition to UNITAS, COMUSNAVSO, participates in navy-to-navy exercises, counter drug operations, port visits, humanitarian missions, disaster relief, new horizons, and protocol events. COMUSNAVSO exercises military command and control of all assigned ships and unit, and represents the U.S. Southern Command with respect to naval matters in the region.[3]

Previous USNAVSO Commanders

  • Rear Admiral Kevin P. Green (10 December 1999 - Unknown)(Retired) [4]
  • Rear Admiral Vinson E. Smith (September 2002 - 2 September 2005)(Retired) [5]
  • Rear Admiral James W. Stevenson, Jr. (2 September 2005 - 12 July 2008)(Retired) [6][7]
  • Rear Admiral Joseph D. Kernan (12 July 2008 - 12 June 2009) [3][8]
  • Rear Admiral Victor G. Guillory (12 June 2009 - 5 August 2011)(Retired) [9]
  • Rear Admiral Kurt W. Tidd (5 August 2011 - 22 June 2012) [10][11]
  • Rear Admiral Sinclair M. Harris (22 June 2012 – Present) [12]


  1. "Naval Component Command, Numbered Fleet Changes Command". United States Navy. June 22, 2012. 
  2. "U.S. Naval Forces Southern Command Relocates to Florida". United States Navy. January 26, 2004. 
  3. 3.0 3.1 "Navy Reestablishes U.S. 4th Fleet". United States Navy. April 24, 2008.  Cite error: Invalid <ref> tag; name "reestablished" defined multiple times with different content
  4. "New Admiral in Puerto Rico". United States Navy. September 20, 2002. 
  5. "Biography of Vinson E. Smith". United States Navy. June 5, 2012. 
  6. "Biography of James W. Stevenson, Jr.". United States Navy. June 5, 2012. 
  7. "COMUSNAVSO Welcomes New Commander". United States Navy. September 2, 2005. 
  8. "Biography of Joseph D. Kernan". United States Navy. June 5, 2012. 
  9. "NAVSO, 4th Fleet Changes Command". United States Navy. June 12, 2009. 
  10. "Biography of Kurt W. Tidd". United States Navy. June 5, 2012. 
  11. "U.S. Naval Forces Southern Command/C4F hosts Change of Command Ceremony". United States Navy. August 5, 2011. 
  12. "Biography of Sinclair M. Harris". United States Navy. June 22, 2012. 

Suggested reading

Karen Domabyl Smith et al. (January 2002). "Is NAVSO Organized and Staff To Do Its Job" (PDF). Alexandria, Virginia: Center for Naval Analyses. Retrieved 2011-09-03. "CRM D0005057.A1/Final" 

External links

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