Ohio-class guided-missile submarines (SSGN) provide the Navy with unprecedented strike and special operation mission capabilities from a stealthy, clandestine platform. Armed with tactical ...

Summary and 4 Points You Need to Know: The U.S. Navy’s Columbia-class submarines, designed to replace the aging Ohio-class vessels ... affect the vessels’ bow section and power generators.

The US Navy's oldest active submarine is back for operations in the Pacific after a three-year maintenance period. The USS Ohio is a first-in-class nuclear-powered guided-missile submarine.