The 14 Ohio-class SSBNs can carry ... Arms Limitation Treaty, each submarine will have four of its missile tubes permanently deactivated in the coming years. The SSBN’s strategic weapon is ...

Among existing submarines, the SSBN is the largest and most heavily ... more than the 16 missiles on Russia’s Borei class and the 20 on the Typhoon class, making them significantly more powerful.

Ohio-class guided-missile submarines (SSGN ... The SSGN Program Office refueled and converted four ballistic missile submarines (SSBN) into SSGNs in a little more than five years at a ...