1. OHIO Replacement Ship Design
Mike Breslin
Technical Director
OHIO Replacement Program

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. EB & NAVSEA are Challenging Cost Drivers Across the Life-Cycle8

9. 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

10. 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

11. Manufacturing & Assembly Plan11

12. 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

13. Questions/Comments 13