Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online: Service Ship Photo Archive

USNS Mission San Carlos (T-AO-120)
Mission San Carlos (AO-120) (1947 - 1949)

International Radio Call Sign:
November - Hotel - November - Zulu
Awards, Citations and Campaign Ribbons

Precedence of awards is from left to right
National Defense Service Medal

Mission Buenaventura Class Fleet Oiler:
  • Laid down, 1 November 1943, as a Maritime Commission type (T2-SE-A2) tanker hull under Maritime Commission contract (MC 1279) at Marinship, Sausalito, CA
  • Launched, 12 February 1944
  • Delivered to the Maritime Commission, 15 April 1944 and chartered to Pacific Tankers, Inc for the remainder of World War II
  • Returned to the Maritime Commission, 20 April 1946
  • Laid up in the National Defense Reserve Fleet, Mobile, AL.
  • Acquired by the US Navy, 12 November 1947, operated by Marine Transport Inc. and placed in service by the Naval Transportation Service (NTS) as Mission San Carlos (AO-120)
  • Operational control transferred to the Military Sea Transportation Service (MSTS) 1 October 1949 and placed In-service as USNS Mission San Carlos (T-AO-120)
  • Placed out of service, 6 November 1957 and laid up in the National Defense Reserve Fleet, Beaumont, TX.
  • Struck from the Naval Register, 6 November 1957
  • Sold to Transwestern Associates, 16 May 1966, renamed SS Seatrain Maryland
  • Resold to Hudson Waterways Corp., September 1966, name retained
  • Converted to a Vehicleship in April 1967
  • Reacquired by the Maritime Administration (MARAD), 30 December 1972, renamed SS Maryland
  • Final Disposition, fate unknown
    Displacement 5,532 t(lt) 21,880 t.(fl)
    Length 524'
    Beam 68'
    Draft 30' (max)
    Speed 16.5 kts.
    Complement 52
    Armament none
    Propulsion Turbo-electric, single screw, 6000hp

    Click On Image
    For Full Size Image
    Size Image Description Contributed
    USNS Mission San Carlos (T-AO-120)
    Mission San Carlos 1242k USNS Mission San Carlos (T-AO-120) underway in the harbor at San Pedro CA., date unknown. David Buell
    BB-44 California 138k Reserve Fleet Basin, Philadelphia Naval Shipyard, Pennsylvania. Photographed on 19 May 1955 with numerous cruisers, escort carriers, and auxiliaries in reserve. The nearest ship is the never-completed
    Hawaii (CB-3), which lacks her previously-installed three 12" gun turrets.
    The cruisers outboard of Hawaii are (in unknown order)
    Honolulu (CL-48),
    Columbia (CL-56),
    Denver (CL-58),
    Galveston (CL-93), and
    Portsmouth (CL-102).
    To their left are
    Tranquility (AH-14),
    Sanctuary (AH-17), and
    Pocono (AGC-16).
    Behind Hawaii (from left to right) are
    Montpelier (CL-57),
    Houston (CL-81),
    Huntington (CL-107),
    Savannah (CL-42),
    Cleveland (CL-55), and
    Wilkes-Barre (CL-103).
    Beyond them (from left to right) are
    Wichita (CA-45),
    Oregon City (CA-122),
    Chester (CA-27), and
    New Orleans (CA-32).
    The cruisers on the left side of the basin (from front to rear) are
    Minneapolis (CA-36),
    Tuscaloosa (CA-37),
    San Francisco (CA-38),
    Augusta (CA-31),
    Louisville (CA-28), and
    Portland (CA-33).
    Among the other ships in reserve in the basin are
    Fomalhaut (AE-20),
    Webster (ARV-2),
    Albemarle (AV-5),
    Tangier (AV-8),
    Pocomoke (AV-9),
    Chandeleur (AV-10),
    Abatan (AW-4),
    Mission San Carlos (AO-120),
    Prince William (CVE-31),
    Anzio (CVE-57),
    Block Island (CVE-106),
    Palau (CVE-122), and
    San Carlos (AVP-51).
    Moored in the shipyard at the extreme left are
    Tennessee (BB-43),
    California (BB-44), and
    Cabot (CVL-28).
    US Navy Photo # 80-G-668655, now in the collections of the US National Archives.
    Robert Hurst
    Commercial Service
    Mission San Carlos 339k Ex-USNS Mission San Carlos (T-AO-120) rebuilt as the heavy lifter SS Seatrain Maryland moored pierside, date and location unknown.
    Possibly © US Maritime Historian Wm. Schell.
    Gerhard Mueller-Debus

    USNS Mission San Carlos (T-AO-120)
    Dictionary of American Naval Fighting Ships (DANFS)
    Crew Contact And Reunion Information
    Fleet Tankers Association
    U.S. Navy Memorial Foundation - Navy Log

    Additional Resources and Web Sites of Interest

    Back To The Navsource Photo Archives Main Page Back To The Service Force Ship Type Index Back To The Fleet Oiler (AO) Photo Index
    Comments, Suggestions, E-mail Webmaster.
    This page is created and maintained by Gary P. Priolo
    All pages copyright NavSource Naval History
    Last Updated 29 March 2013