The year 2011 was a watershed for the Ohio Replacement Program Office. The Milestone A Acquisition Defense Memorandum, issued 10 January 2011, officially authorized the Ohio replacement SSBN to enter the technology development phase. Over the past year, the Ohio Replacement Program worked to solidify requirements, a key step in finalizing the service-approved Capability Development Document. The program also has progressed in the development of common missile compartment (CMC) quad-pack ship specifications and the definition of propulsion-plant and hull/mechanical/electrical (HM&E) systems, and completed significant prototyping work.
The current configuration of the Ohio replacement is an SSBN with 16 87-inch-diameter missile tubes, a 43-foot-diameter hull, fairwater planes, electric-drive propulsion, X-stern, accommodations for 155 personnel, and a common submarine radio room tailored to the SSBN mission. The vessel will utilize the existing Trident II (D-5) life-extended strategic-weapon system (SWS).