The HITAC S-3000 is a former family of vector supercomputers, which was developed, manufactured and marketed by Hitachi. Announced in April 1992, the family succeeded the HITAC S-820. The S-3000 family comprised the low-end and mid-range S-3600 models and the high-end S-3800 models. Unlike Hitachi's previous generations of supercomputers, the S-3000 family was marketed outside Japan.