The Cimarron-class oiler was a class of thirty-five fleet oil tankers used by the United States Navy during World War II. Built between 1939 and 1942, they were designed to the Maritime Commission T3-S2-A1 standard for tankers. The Cimarron-class were used for refueling warships while underway so they didn't have to stop or return to a base. Each vessel could service two ships at a time, and carried up to 146,000 barrels of oil. Of the thirty-five built, four were converted to Sangamon-class escort carriers, and two were sunk.