The United States' fighting ships, from smallest to largest - CNET

The "quiet, fast, and well-armed" submersibles in the Seawolf class were designed to replace the aging Los Angeles-class fleet of submarines. But its high cost ($3 billion to 3.5 billion each) and the end of the Cold War led to the Seawolf program's cancellation after just three submarines were built.

In this picture, the USS Jimmy Carter (SSN-23) undergoes deperming in the Magnetic Silencing Facility at Naval Base Kitsap. The process will reduce the ship's electromagnetic signature, better protecting it from enemy detection and mines.

Length*: 453 feet

Displacement: 12,158 tons (full)

*Note: This is the length of the USS Jimmy Carter, which is slightly larger than the other ships in its class.