Information Regarding Trident II (D-5) Missile Configured Trident Submarine Costs and Schedule

MASAD-82-47: Published: Sep 3, 1982. Publicly Released: Oct 12, 1982.

Additional Materials:


Office of Public Affairs
(202) 512-4800

GAO reviewed the Trident II D-5 missile configured submarine to provide the Navy's: (1) cost information on the program; and (2) scheduled milestone estimates for the program.

Trident submarine program costs will increase for fiscal years 1981-1984 due to the procurement and the installation of the D-5 launch tubes, navigation equipment, and fire control mechanisms. The Navy believes that the restructured program will be less costly than the alternative of installing the C-4 system during new construction and subsequently backfitting these submarines with a D-5 capability. Firm Navy estimates concerning the D-5 impact on Trident program costs are not yet available, but the Navy has provided preliminary costs for the ninth and tenth D-5 configured submarines to Congress. The estimated total cost of $1,692 million for the ninth submarine includes $80 million in one-time costs that are traditionally charged to the lead ship of a class and represents $492 million more than the estimate for construction of the ninth C-4 configured submarine. The preliminary cost estimate of the tenth D-5 configured submarine, $1,816.4 million, represents an increase of $332.2 million over the previously planned tenth C-4 configured Trident submarine. The decision to introduce the D-5 missile system into earlier submarine construction than initially planned will extend some submarine construction timeframes. Program officials estimate that the schedule to construct the ninth, tenth, and eleventh D-5 configured submarine will be extended by 1 year, 1 year, and 4 months respectively. This extension is primarily a result of D-5 government-furnished equipment's not being available to support the construction on these submarines.

Jul 21, 2016

Jun 23, 2016

May 12, 2016

Apr 14, 2016

Mar 4, 2016

Oct 30, 2015

Sep 9, 2015

Aug 17, 2015

Jul 9, 2015

Apr 27, 2015

Looking for more? Browse all our products here