Summary: The U.S. Navy's Seawolf-class submarines, with a cost of $3.5 billion each, represent some of the most advanced undersea warfare technology ever developed, boasting capabilities that remain a concern for Russian and Chinese military strategists.
-Despite their intended role to supersede the Los Angeles-class attack submarines and counter Soviet Akula class submarines, only three Seawolf-class submarines were built due to their substantial cost, consuming a quarter of the Navy's construction budget in the 1990s.