Navy Trident Submarine Conversion (SSGN) Program: Background and Issues for Congress
LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
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The Navy procured 18 Ohio SSBN-726 class nuclear-powered ballistic missile submarines SSBNs between FY1974 and FY1991 to serve as part of the U.S. strategic nuclear deterrent force. They are commonly called Trident submarines because they carry Trident submarine-launched ballistic missiles SLBMs. The first Trident entered service in 1981, the 18th in 1997. The first 8 SSBNs 726 through 733 were originally armed with Trident I C4 SLBMs the final 10 SSBNs 734 through 743 were armed with larger and more powerful Trident II D5 SLBMs. The boats were originally designed for a 30-year life but were later certified for a 42-year life, composed of 20 years of operation, a two-year mid-life nuclear refueling overhaul, and then another 20 years of operation. The FY2006 budget completed the funding required in the Shipbuilding and Conversion, Navy SCN account for the Navys program to refuel and convert four Trident ballistic missile submarines SSBNs into cruise-missile-carrying and special operations forces SOF support submarines SSGNs. Initial Operational Capability IOC for the program was declared on November 1, 2007. The total estimated cost of the program is about 4.0 billion. This report will be updated as events warrant.
- Economics and Cost Analysis
- Submarine Engineering