OHIO Replacement Ship Design Mike Breslin Technical Director OHIO Replacement Program

OHIO Replacement SSBN 21st Century Capability… Sufficient payload:16 missile tubes Meets USSTRATCOM requirements Flexibility to handle problems across triad or degradation in strategic environment Sufficient stealth to address the projected threat through the 2080s 12 OR SSBNs to replace 14 OHIOs Life-of-ship reactor core Reduced mid-life maintenance period Maximize reuse of OHIO and VIRGINIA components to minimize cost (Large Aperture Bow Array) Additional Array OHIO Replacement SSBN Attributes In an Affordable Platform… Lead ship construction must commence in 2021 First Strategic Patrol in 2031 Maintains fleet of 10 operational SSBNs through transition to OHIO Replacement Procurement timeline meets USSTRATCOM requirements with moderate operational risk during transition period Low margin for unforeseen SSBN maintenance issues or late OHIO Replacement delivery 12 OR SSBNs needed to meet long term requirements during OHIO Replacement mid-life overhaul period At Responsible Cost… 2

Design / Technology Development Philosophy Design – Build – Sustain Cost Reduction – Design for Affordability / Sustainability Leverage VA Class Cost Reduction Success Stealth = Survivable = Credible Nuclear Deterrent Enhance Design Maturity at Construction Start Deploy Strategic Deterrence through Integration of the Existing TRIDENT II D5 Weapon System into the OHIO Replacement Maximize use of components previously developed and qualified for VIRGINIA Class, SEAWOLF Class, and OHIO Class 3

OHIO Replacement Characteristics 16 x 87” Missile Tubes/ (D5-LE SWS) Fairwater Planes Centerline Access Sail (6-VA UMMs, OHIO-Height) X-Planes Scheme “C” Scaled VIRGINIA-Like LAB (passive only, no HFCA) VIRGINIA Class Hull Treatments Other Characteristics 43’ Hull Diameter 155 Total Accommodations 14 Torpedo Stows using VA reconfigurable architecture VIRGINIA-Like ARCI/AN-BYG1 OHIO-like thin line and fat line array 4” Keel plate in MC Min reserve buoyancy = 12.0% Flank Array   OHIO OR Nov 2014 Length Between Planes 559.3 ft 560.1 ft Diameter 42 ft 43 ft # of Missile Tubes 24 16 4

OHIO Replacement Design & Development OHIO REPLACEMENT (OR) System and Component Re-use New Development VIRGINIA Class OHIO Class New Items Propulsor Universal Modular Mast Rafted Deck Ship Control System Towed Array System NPES Hull Coatings Torpedo Tubes Large Aperture Bow Array ICCP/ Circuit D WSHS Pumps/Valves Vacuum Sanitary Heat Exchangers Integrated Low Pressure Electrolysis Strategic Weapons System Strategic Weapons System Support Systems Missile Compartment Communications Buoy Emergency Beacon Buoy Fairwater Planes TNT Superstructure Propulsion Drive Train - Electric Drive - Quick Disconnect Duct - Shaft Bearing Journal - Tapered Shaft/Duo-Bloc Hub 42 Year Operational Life X-Stern Integrated Tube/Hull Construction Air Conditioning Plant Advanced Carbon Dioxide Removal Unit ESGN Replacement Thin Line Towed Array Handler HM&E Monitoring and Control (HMC) Cold Mold Bow Dome 5

OHIO Replacement Design Specifics Acoustic requirements resulting in Electric drive and Isolated Deck Modules 16 missile tubes; Increased frame spacing (43” vs. 41”) for producibility Bow shape for sonar, tank volume for draft and buoyancy requirements Propulsor for acoustics; tank volume for draft and buoyancy requirements Battery displaced from forward compartment to support operations and maintainability Re-use of VACL torpedo room design and Isolated Deck Modules 6

Recent Affordability Initiatives Delivering the Core Essential Military Capability at the Lowest Possible Cost Delivering the Core Essential Military Capability at the Lowest Possible Cost Detailed requirements review produced savings Reduced number of missile tubes Reduced missile tube diameter Reduced torpedo room capacity Removed chin array Reduced sail mast capacity Reduced force protection features Reduced OHIO Replacement unique design features 20 to 16 tubes 97 inches to 87 inches Minimum capacity for defensive load only Minimum acoustic sensors for defensive detection; leverage VIRGINIA-Class combat systems 10 to 6 masts Current OHIO-Class system Increased use of VIRGINIA-Class components Recent Affordability Initiatives EOQ and multi-year procurement Facilities Design for producability Requirements and regulations Integrated Product Development Environment (IPDE) Manufacturing technologies, service, and support (CY10 $s) Costs developed by NAVSEA05C for OHIO Replacement Service Cost Position; Inflation based on NAVSEA 05C Jan 2010 SCN Shipbuilding Composite Inflation Table 7

EB & NAVSEA are Challenging Cost Drivers Across the Life-Cycle 8

OHIO Replacement “6-16-6” Maintenance Life Cycle DD Refits – 30 Non DD Refits – 94 Total Refits – 124 Total Refit Duration – 157 months Assumptions: Three 77 day patrols and one 62 day patrol between dry dock refits 35 day non-docking refits (22 production days; 94 throughout life cycle) 50 day dry dock refits every 4 patrols (35 production days; 30 throughout life cycle) 3 Major availabilities Two 6-month Extended Refit Periods (ERPs) around 10-year & 32-year point One 16-month Engineering Overhaul (EOH) around the 20-year mid-life Life-of-ship core TRIPER OPCYCLE modeled after nominal OHIO schedule 9

OHIO Replacement “Quad Pack” Construction Process State-of-the-Art Construction Processes Minimize Cost and Save Time OHIO Replacement “Quad Pack” Construction Process F-Fixture 84% Outfitted Missile Tube E-Fixture Quad Packs Prototype Missile Tube Reduces missile compartment costs and construction time 10

Manufacturing & Assembly Plan 11

OHIO Replacement Ensures Strategic Deterrence into the 2080’s The U.S. will retain nuclear weapons for the foreseeable future The Triad (SSBNs, ICBMs, Bombers) provides effective nuclear deterrence and assurance Deployed U.S. strategic warhead numbers have decreased significantly, however majority are now carried by SSBNs The SSBN force provides the U.S. with a survivable assured response capability SSBNs use adaptability to cope with change The current OHIO Class SSBN force is reaching the end of its operational service life Further delays in the OHIO Replacement SSBN would gap at-sea strategic requirements OHIO Replacement SSBN meets the 21st century requirement for survivable strategic deterrence at minimal cost OHIO Replacement leverages 50+ years of SSBN design and operation experience and combines it with the cost-control lessons of the VIRGINIA-class SSN to provide an assured response capability for the future in a lean and cost-efficient manner The OHIO Replacement SSBN is a cost-effective recapitalization of our Nation’s sea-based strategic deterrent 12

Questions/Comments 13