They were the largest Navy oilers of their day and nearly 500 of them were built between 1940 and 1945.  Now the last T2 tanker, the USNS Mission Santa Ynez, is soon to be on her way from San Fransisco to a scrapyard in Beaumont.  From the Maritime Blog.  Thanks to Dave Shirlaw for pointing it out.

The last T-2 tanker

The last T-2 tanker, in the world is on the way to its final resting place. The USNS Mission Santa Ynez is a Type T2-SE-A2 tanker, of the Mission Buenaventura Class. She has been laid-up in the mothball fleet of Suisun Bay, CA since 1975, and in a few days will be departing the San Francisco drydock for her final voyage to Brownsville, TX for scrapping, under tow through the Panama Canal.