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Title page
Contents
Highlights 2
Letter 6
Background 7
Introduction of DDG 51 Flight III 8
Flight III Shipbuilding 10
IAMD Systems for Flight III 11
Developmental and Operational Testing 14
Radar Development Is on Schedule, with Considerable Development, Testing, and Integration with the Combat System Remaining to Meet Flight III Needs 15
The Navy Has Made Progress Maturing SPY-6 Radar Technologies, with Key Developmental Testing Remaining to Demonstrate Radar Capability 16
Despite Navy Efficiency Efforts, Aegis Upgrade Development Schedule Is Optimistic 18
Secretary of Defense Has Directed the Navy to Upgrade an Unmanned Self-Defense Test Ship for Flight III Operational Testing 24
Complex Flight III Design May Pose Challenges in Maintaining Planned Ship Construction Schedule 29
Complexity of Changes and Ship Density Create Challenges for Flight III Design and Construction 29
The Navy Is Pursuing an Aggressive Schedule to Complete Ship Design Prior to Construction 35
The Navy Lacks Sufficient Knowledge to Procure Flight III Ships as Planned and Oversight Opportunities Are Limited by Planned Program Reporting 38
Amidst Uncertainties in the Acquisition Strategy, the Navy Plans to Contract for First Flight III Ships Beginning in Fiscal Year 2016 39
The Navy Has Not Gained Sufficient Acquisition and Design Knowledge to Award Lead Flight III Ship in Fiscal Year 2016 42
Flight III Ships Will Offset Navy's Estimated Cost Savings for Its Current Contracts and Meeting Criteria for New Multiyear Procurement Will Be Challenging 44
DDG 51 Acquisition Approach Limits Opportunities for Insight into Flight III Cost and Schedule 47
Flight III Ships Will Provide Improved Air and Missile Defense Capabilities to the Fleet, but Physical Constraints Limit Potential for Future Upgrades 50
The Navy Is Using an Incremental Approach to Achieve Full Flight III Capability 50
Flight III Cannot Provide Needed Capability to Address the Most Stressing Anticipated Threats to Surface Combatants 51
Physical Constraints of the Hull Form Limit Flight III's Future Upgrade Potential 54
Flight III's Ability to Fulfill Some Cruiser Responsibilities Is Being Considered as Navy Begins Planning for New Surface Combatant 56
Conclusions 58
Matter for Congressional Consideration 59
Recommendations for Executive Action 59
Agency Comments and Our Evaluation 60
Appendix I: Objectives, Scope, and Methodology 64
Appendix II: Comments from the Department of Defense 68
Appendix III: GAO Contacts and Staff Acknowledgments 71
Table 1. DDG 51 Ship Configurations 8
Table 2. Status of SPY-6 Critical Technologies 16
Table 3. Expected Interface Changes for the Aegis Combat System Related to the SPY-6 Radar 19
Table 4. Key Factors for the Unmanned Self-Defense Test Ship Disagreement between the Navy and the Director, Operational Test and Evaluation (DOT&E) 26
Table 5. Major Ship Upgrades Introduced in Flight III Configuration 31
Table 6. Flight III Ship Density Challenges 33
Table 7. Navy's Multiyear Procurement (MYP) Strategy for Fiscal Years (FY) 2013-2017 41
Table 8. Extent to Which the Navy Will Be Positioned to Seek Fiscal Year 2018 Multiyear Procurement Authority from Congress for Flight III Ships by February 2017 45
Table 9. Information Required for New Programs at Milestone B 48
Figure 1. Shipbuilders' Detail Design Process for DDG 51 Flight III 11
Figure 2. Radar Capabilities on Notional DDG 51 Flight III Ship 13
Figure 3. Integrated Schedule for SPY-6 Radar, Aegis Combat System Upgrade, and DDG 51 Flight III Ships 16
Figure 4. Comparison of Aegis Advanced Capability Build (ACB) Development Timelines from Requirements Setting to Certification 21
Figure 5. Flight III Ship Configuration Changes Related to SPY-6 Radar Introduction 30
Figure 6. Design Change Results for Different DDG 51-Class Ship Configurations 35
Figure 7. DDG 51 Flight III Design Schedule 36
Figure 8. DDG 51 Flight III Contract Modifications Process Using Fiscal Year 2013-2017 Multiyear Procurement 39
Figure 9. Flight III Planned Capabilities and Ship Deliveries 51
Figure 10. Flight III Threat Timeframes and Planned Ship Deliveries 53
Figure 11. Flight III Service Life Allowance Estimates 55
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