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 Luis Obispo (T-AO-127)
ex
Mission San Luis Obispo (AO-127) (1947 - 1949)

International Radio Call Sign:
November - Hotel - Papa - Whiskey
NHPW
Awards, Citations and Campaign Ribbons

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


Mission Buenaventura Class Fleet Oiler:
  • Laid down, 18 April 1944, as a Maritime Commission type (T2-SE-A2) tanker hull, under Maritime Commission contract (MC 1823) at Marinship, Sausalito, CA.
  • Launched, 18 June 1944
  • Delivered to the WSA, 15 July 1944, for charter to Pacific Tankers, Inc.
  • Returned to the Maritime Commission, 27 March 1946, for lay up in the National Defense Reserve Fleet, James River, Fort Eustis, VA.
  • Acquired by the Navy, 24 October 1947, and assigned to the Naval Transportation Service (NTS) as Mission San Luis Obispo (AO-127)
  • Absorbed into the Military Sea Transportation Service (MSTS), 1 October 1949 and placed in service as USNS Mission San Luis Obispo (T-AO-127)
  • Placed out of service, 22 June 1955
  • Laid up in the National Defense Reserve Fleet, Olympia, WA.
  • Reacquired by the Navy, 27 June 1956, and again placed in service with MSTS as USNS Mission San Luis Obispo (T-AO-127)
  • Returned to the Maritime Administration, 24 June 1957, for lay up in the National Defense Reserve Fleet, Beaumont, TX.
  • Struck from the Naval Register, 24 September 1957
  • Sold, 25 March 1966, to Hudson Waterways Corp., for conversion to a combination containership and train ferry, renamed SS Seatrain Puerto Rico, 1 April 1966
  • Final Disposition, scrapped, date unknown
    Specifications:
    Displacement 5,532 t.(lt) 21,880 t.(fl)
    Length 523' 6"
    Beam 68'
    Draft 30' 10"
    Speed 15.1 kts (trial)
    Complement
    52 CivMar
    17 US Navy Armed Guard
    Armament
    one single 5"/38 dual purpose gun mount
    four single 3"/50 dual purpose gun mounts
    four twin 40mm AA gun mounts
    four twin 20mm AA gun mounts
    Cargo Capacity 15,300DWT
    Oil 120,400 Bbls
    Gasoline 575,000 Gals
    Fuel Capacity NSFO 9,235 Bbls
    Propulsion
    one General Electric turbo-electric engine
    two Babcock and Wilcox D-type boilers, 600psi 825°

    Ship's Service Generators
    two turbo-drive 400Kw 450V A.C.
    two turbo-drive 85Kw 120V D.C.
    two turbo-drive 55Kw 120V D.C.
    one turbo-drive 50Kw 450V A.C.
    single propeller, 10,000shp

    Click On Image
    For Full Size Image
    Size Image Description Contributed
    By
    Mission San Luis Obispo (War Shipping Administration)
    Mission San Luis Obispo 85k Mission San Luis Obispo underway off the Marinship yard at Sausalito, CA., circa June-July 1944.
    US Maritime Commission photo courtesy Auke Visser's Famous T - Tankers Pages.
    Robert Hurst
    Mission San Luis Obispo 142k Mission San Luis Obispo moored the Marinship yard at Sausalito, CA., circa June-July 1944.
    US Maritime Commission photo courtesy Auke Visser's Famous T - Tankers Pages.
    Robert Hurst
    Mission San Luis Obispo (AO-127)
    Mission San Luis Obispo 33k Mission San Luis Obispo (AO-127) moored pierside, circa 1947-49, location unknown. Matthew D. Herrera
    USNS Mission San Luis Obispo (T-AO-127)
    Mission San Luis Obispo 1041k USNS Mission San Luis Obispo (T-AO-127) underway in San Pedro harbor, date unknown. David Buell
    Merchant Service Seatrain Corp.
    Mission San Luis Obispo 116k Ex USNS Mission San Luis Obispo (T-AO-127) in merchant service as SS Seatrain Puerto Rico underway, date and location unknown.
    Courtesy Auke Visser's Famous T - Tankers Pages. Photo ©L.A. Sawyer and W.H. Mitchell,
    Robert Hurst

    USNS Mission San Luis Obispo (T-AO-127)
    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
    MARAD Vessel History Database
    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 12 June 2015