United States Government Publishing Office publisher pbl distributor dst United States Government Accountability Office National Security and International Affairs Division author aut Government Organization text government publication eng GAOREPORTS Legislative Agency Publications gao legislative 2010-08-12 U.S. Government Printing Office 1994-07-06 monographic deposited born digital GA 1.13:NSIAD-94-192 https://www.govinfo.gov/app/details/GAOREPORTS-NSIAD-94-192 P0b002ee180388e38 f:ns94192 DGPO 2010-08-12 2011-03-24 GAOREPORTS-NSIAD-94-192 machine generated eng fdlp REPORT GAOREPORTS-NSIAD-94-192 NSIAD-94-192 Advanced weapons systems Navy procurement Spare parts Military inventories Submarines Electronic equipment Projections Inventory control systems Fleet ballistic missiles Nuclear weapons MK-6 Guidance System Trident D5 Missile Trident II Submarine Warsaw Pact Soviet Union Navy Commander in Chief Evaluation Test Program Navy Demonstration and Shakedown Operation Test Letter Report NSIAD The Navy plans to have 10 Trident II missile submarines by the end of fiscal year 1997. Each Trident II carries 14 D-5 missiles, and each missile is equipped with the MK-6 guidance system, which is comprised of an inertial measurement unit and an electronics assembly. The Navy maintains spare MK-6 guidance systems on board each submarine and in its logistics pipeline for test and maintenance purposes. The Navy carries six spare MK-6s on board each patrolling submarine. These inventory objectives are based on maintaining the same high levels of readiness and reliability that were originally established between 1986 and 1987 during the Cold War era. GAO found that reducing the number of on board spares to three would decrease the guidance system's operational readiness by only 3 percent, and reducing the number of spares to four would result in only a 0.66 percent decrease. GAO recommends the Secretary of Defense consider reducing the number of additional MK-6 guidance systems scheduled to be procured in coming years in light of the decreased threat following the break up of the Soviet Union and the end of the Cold War. https://www.govinfo.gov/content/pkg/GAOREPORTS-NSIAD-94-192/html/GAOREPORTS-NSIAD-94-192.htm GAO/NSIAD-94-192 https://www.govinfo.gov/app/details/GAOREPORTS-NSIAD-94-192 Letter Report GAO/NSIAD-94-192; Trident II: Reductions to MK-6 Guidance System Inventory Objectives May Be Possible; Advanced weapons systems Navy procurement Spare parts Military inventories Submarines Electronic equipment Projections Inventory control systems Fleet ballistic missiles Nuclear weapons MK-6 Guidance System Trident D5 Missile Trident II Submarine Warsaw Pact Soviet Union Navy Commander in Chief Evaluation Test Program Navy Demonstration and Shakedown Operation Test