The USA’s Ohio/ Henry M. Jackson Class and Britain’s Vanguard Class SSBNs (i.e. nuclear missile submarines) will begin experiencing age-related risks by the late 2010s, and military programs of this type can easily take 15-20 years from concept to fielding. The Common Missile Compartment (CMC) sub-program will help to define one of the next-generation SSBN’s most important constraints.
CMC aims to define the missile tubes and accompanying systems that would be used to launch new ballistic missiles, successors to the current Trident II/ D5 missile fleet used by the USA and Britain. Key options under consideration include a widened diameter for each tube from 2.21m – 3.04m, and the potential for flexibility beyond nuclear missiles.