The end of the Cold War and budget constraints led to the cancellation of any further additions to the fleet in 1995, leaving the Seawolf class limited to just three boats.
The boats are able to carry up to 50 UGM-109 Tomahawk cruise missiles for attacking land and sea surface targets.
[13] Each boat is powered by a single S6W nuclear reactor, delivering 45,000 hp (34 MW) to a low-noise pump-jet.
The projected cost for 12 submarines of this class was $33.6 billion, but construction was stopped at three boats when the Cold War ended.
[14] USS Jimmy Carter is roughly 100 feet (30 m) longer than the other two boats of her class, due to the insertion of a section known as the Multi-Mission Platform (MMP) which allows launch and recovery of remotely operated underwater vehicles (ROV) and Navy SEALs.