Oxford-class research ship

The Oxford class of technical research ships were a class of three World War II Liberty ships converted in the early 1960s to provide a seaborne platform for global eavesdropping on behalf of the National Security Agency. The ships of this class were similar to the ships of the same era with the difference being that they were adapted from Victory ships.

Ships in class

 * Oxford class (Liberty ship type)
 * USS Oxford (AGTR-1) • 1961–1969
 * USS Georgetown (AGTR-2) • 1963–1969
 * USS Jamestown (AGTR-3) • 1963–1969