USS Ponaganset AO-86/AOG-86) was a Suamico-class fleet oiler, of the T2-SE-A2 tanker hull type, serving in the United States Navy during World War II.

The newly commissioned fleet oilers Ocklawaha and Ponaganset were used to carry potable water to ships and bases in the forward area.

In the South Pacific area where most of the amphibious forces were serviced, the naval base at Tulagi estimated that, between 15 August and 1 September, 20,917,000 US gallons (79,180 m3) of water was supplied to LSTs, LCIs, and small craft.

[1] In April she carried water to the task force off Okinawa, returning there during each of the next three months while moving around the western Pacific touching at Ulithi, Guam, and Leyte where she was to be found at the war's end.

The presence of the sharp cracks in the arc strike located in a region of high residual stress resulting from the fillet weld provided the necessary conditions for fracture initiation at temperatures below the NDT.

The steel was typical of the World War II production material which features relatively high carbon and low manganese contents.On 2 March 1948 the vessel was reacquired by the navy "as is where is".