Part 2/10:

Nuclear submarines, or "nukes," are a technologically advanced class of vessels that vastly outperform conventional submarines in endurance, stealth, and strategic versatility. Developed initially in the 1950s, these vessels form the backbone of the U.S. Navy’s ballistic missile and attack submarine fleets. Unlike traditional diesel-electric submarines, which must surface periodically for air, nuclear subs can remain submerged for months, conducting extended missions with minimal surface exposure.