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NavSource Online: Service Ship Photo Archive

USS Pumper (YO-56)

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

Precedence of awards is from left to right
American Campaign Medal - Europe-Africa-Middle East Campaign Medal (1) - World War II Victory Medal

USS Pumper (YO-56) was transferred to France under the Lend-lease Act and renamed RFS Lac Tonle-Sap (A630)

YO-55 Class Fuel Oil Barge (Non-self-propelled):
  • Laid down, 25 March 1942, at RTC Shipbuilding Co., Camden, N.J., under a contract from Ira S. Bushby & Sons, Inc., Brooklyn, N.Y.
  • Launched, 7 September 1942
  • Delivered to the US Navy and commissioned USS Pumper (YO-56), 28 December 1942
  • Initially allocated to the 10th Naval District
  • During World War II USS Pumper was assigned to the Europe-Africa-Middle East Theater and participated in the following campaign:
    European Campaign
    Campaign and Dates
    Invasion of southern France, 15 August to 25 September 1944

  • Placed out of service, 10 February 1945 and transferred to France under terms of the Lend-lease Act
  • Commissioned into the French Navy as RFS Lac Tonle-Sap (A630)
  • Struck from the Naval Register, date unknown
  • Lac Tonle-Sap was assigned to Toulon, Cherbourg and Brest
  • Disarmed at Toulon, 1 January 1981
  • Condemned, 11 August 1981, redesignated Q 618, sunk in the Mediterranean
    Displacement 944 t.
    Length 235' 0"
    Beam 37'
    Draft 15'
    Speed 10 kts.
    Cargo Capacity 10,000 gal.
    Complement unknown
    Armament none
    Propulsion none

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    Size Image Description Source
    RFS Lac Tonle-Sap (A630)
    YO-56 44k Ex-USS Pumper (YO-56) underway while in French service as RFS Lac Tonle-Sap (A630), date and location unknown. Robert Hurst
    YO-56 72k RFS Lac Tonle-Sap (A630) moored pierside, 16 July 1963, at Ajaccio, France. Photo courtesy Serge Tilly
    YO-56 38k RFS Lac Tonle-Sap (A630) underway, date and location unknown. Robert Hurst
    YO-56 94k Overhead view of RFS Lac Tonle-Sap (A630) underway, date and location unknown. Courtesy Serge Tilly
    YO-56 50k RFS Lac Tonle-Sap (A630) underway, circa 1965, location unknown.
    Official French Navy photo
    Robert Hurst
    YO-56 36k RFS Lac Tonle-Sap (A630) moored pierside, date and location unknown.
    Photo from Marine Nationale
    Robert Hurst

    USS Pumper (YO-56)
    DANFS entry located at the US Naval History and Heritage Command
    Crew Contact And Reunion Information
    U.S. Navy Memorial Foundation - Navy Log

    Additional Resources and Web Sites of Interest
    RFS Lac Tonle-Sap (A630)
    Back To The Navsource Photo Archives Main Page Back To The Yard and District Craft Photo Index Back To The Fuel Oil Barge (Self-propelled) Photo Index
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    This page is created and maintained by Gary P. Priolo
    All pages copyright NavSource Naval History
    Last Updated 29 July 2011