High Quality Content by WIKIPEDIA articles! The AN/USQ-17 or Naval Tactical Data System (NTDS) computer referred to in Sperry Rand documents as the Univac M-460, was Seymour Cray's last design for UNIVAC. UNIVAC later released a commercial version, the UNIVAC 490 and that system was later upgraded to a multiprocessor configuration as the 494. The machine was the size and shape of a bathtub, about four feet high (roughly 1.20 meters), with a hinged lid for access. However, shortly after completing the design Cray left to join Control Data Corporation. So when the Navy awarded Sperry Rand a US$50 million contract to build the AN/USQ-17, the loss of the engineers that understood the machine force