The U.S. Navy has ordered another eight Virginia class SSNs

[geetrue]

Nice article if you wonder how many boats the USN have on order or in service:
http://www.strategypage.com/htmw/hts.../20081230.aspx

The United States has three classes of SSN. The mainstay of the American submarine force is still the 6,100 ton Los Angeles-class SSN. Sixty-two of these submarines were built, 45 of which remain in front-line service, making it probably the largest class of nuclear submarines that will ever be built.

But they are going fast