In 1989, the U.S. Navy wanted to build a full-scale prototype propulsor for the new Seawolf submarine.The difficult technical and scheduling requirements for the project required the use of advanced materials and technologies to achieve extreme tolerances. 

The Navy turned to the Y-12 National Security Complex, with 50 years of experience in prototype manufacturing for national defense. 

In 1993, Oak Ridge delivered the propulsor  ahead of schedule and within budget. 

Significant achievements by Oak Ridge in completing the project included integrating technologies in:

• Design and simulation
• Advanced numerically controlled programming
• Complex machining and fabrication
• Welding and special process development
• Advanced inspection techniques

The first Seawolf submarine was commissioned in July 1997. The SSN-21 Seawolf is now undergoing sea trials in preparation for carrying out missions as the fastest, quietest submarine ever. 

In recognition of Y-12's diverse, integrated capabilities and its commitment 
to succeeding with high-risk projects, the U.S. Congress in 1997 designated Y-12  
as the National Prototype Center. 

For information, phone 1-800-356-4USA or visit our web site: http://orcmt.oakridge.org/npc.html