Changes

Today, the United States Navy operates 14 Ohio class SSBN's, 4 Ohio class SSGN's, 3 Seawolf class SSN's, approximately 40 Los Angeles Class SSN's, and 2 commissioned Virginia class SSN's.

Today, the United States Navy operates 14 Ohio class SSBN's, 4 Ohio class SSGN's, 3 Seawolf class SSN's, approximately 40 Los Angeles Class SSN's, and 2 commissioned Virginia class SSN's.

*SSN is Submersible Ship Nuclear

*SSN is Ship, Submersible, Nuclear (powered)

*SSBN is Submersible Ship Ballistic Nuclear

*SSBN is Ship, Submersible, Ballistic (missile), Nuclear (powered)

*SSGN is Submersible Ship Guided Nuclear

*SSGN is Ship, Submersible, Guided (missile), Nuclear (powered)

The "N" refers to nuclear propulsion, not necessarily nuclear weapons. An SSBN carries nuclear missiles and an SSGN can carry 154+ Tomahawk cruise missiles. Other submarines can carry Tomahawks, but the SSGN loadout is extremely massive compared to that of a standard SSN.  

The "N" refers to nuclear propulsion, not necessarily nuclear weapons. An SSBN is capable of being armed with nuclear missiles while an SSGN is designed to carry up to 154 Tomahawk cruise missiles. SSN's are capable of carrying Tomahawks, but only a very limited number of tubes.  The SSGN has 8 tubes that can be reconfigured to support Special Operations Forces in a variety of roles.

Currently, the United States Navy maintains submarines bases in

Currently, the United States Navy maintains submarines bases in