070622-N-1522S-001 MAYPORT, Fla. (June 22. 2007) – Fast-attack submarine USS Jacksonville (SSN 699) prepares to moor pierside at Naval Station Mayport. Homeported in Norfolk, Va., this submarine’s namesake invokes a special connection to the people of Jacksonville. U.S. Navy photo by Mass Communication Specialist 2nd Class Leah Stiles (RELEASED)

From jacksonville.com – AHOY, USS Jacksonville

What kind of boat is the USS Jacksonville?
It is a nuclear-powered, Los Angeles-class attack submarine. Armed with cruise missiles and torpedoes, attack subs are designed to hunt other submarines, attack surface ships and shore targets, conduct surveillance and gather intelligence, said Cmdr. John Kropcho, the Jacksonville’s commanding officer. The submarine is 360 feet long, has a crew of about 140 and is based in Norfolk, Va. read more