![]() ![]() The term TRIDENT (C4) replaced the extended-range missile (Advanced POSEIDON) nomenclature in May 1972, and the name TRIDENT II was used to designate the new longer range missile. This second missile, subsequently termed ULMS II, was to be a larger, higher-performance missile than the extended-range POSEIDON and to have a range capability of approximately 6000 nm. In addition to the new ULMS (extended-range POSEIDON) missile, which was to achieve a range twice that of POSEIDON, the SECDEF decision described an even longer-range missile to be required for a new submarine, whose parameters it would, in part, determine. The ULMS program was a long-term modernization plan which proposed development of a new, longer-range missile and a new, larger submarine, while preserving a nearer-term option to develop an extended range POSEIDON. The Navy (SSPO) commenced studies of a new Undersea Long-range Missile System (ULMS), which culminated in the Deputy SECDEF approving a Decision Coordinating Paper (DCP) No. Third, the threat of improved Soviet ASW capability made an enlarged SSBN operating area highly desirable. Second, though the POSEIDON missile provided an important upgrade of the system, the SSBN force itself was aging and would require replacement. First, the submarine-launched ballistic system was recognized as the most survivable element in the triad of strategic nuclear deterrents. However, it also recognized three important facts concerning American strategic defense capabilities which had assumed central significance in deliberations of U.S. The STRAT-X study in 1967 recognized that the submarine-launched ballistic missile system was one of the more survivable legs in the Triad strategic nuclear deterrent system. Of 800 feet at speeds in excess of 25 knots. Steam turbines to a single propeller shaft. Submarine is powered by a pressurized water reactor (PWR) driving One SSBN combat employment cycle includes a 70-day patrol and 25-day period of transfer of the submarine to the other crew, between-deployment maintenance, and reloading of munitions. Each SSBN is at sea at least 66 percent of the time, including major overhaul periods of twelve months every nine years. The classĭesign and modern main concepts allow the submarines to operate for 15+ Reducing the time required for replenishment and maintenance. Pallets, equipment replacement modules and machinery components, significantly ![]() These hatches allow sailors to rapidly transfer supply Three large logistics hatches are fitted to provide large diameter resupplyĪnd repair openings. To increase the time in port for crew turnover and replenishment, The Ohio-class submarines are specifically designed for extendedĭeterrent patrols. Improved silencing techniques reduce the chances of detection. The larger hulls accommodate more weapons of larger size and greater range, as well as sophisticated computerized electronic equipment for improved weapon guidance and sonar performance. The streamlined hull was designed specifically for efficient cruising underwater the Skipjack was the first nuclear-powered ship to adopt this hull form. This would include the sail or fairwater area, and the area above the missile tubes. The superstructure is any part of the ship that is above the pressure hull. It is normally considered as the main ballast tanks. This outer hull surrounds the forward and aft end of the pressure hull and is not built to withstand deep submergence pressure. The pressure hull provides an enclosure large enough for weapons, crew, and equipment with enough strength to enable the ship to operate deep enough to avoid easy detection.Ī streamlined (fish-shaped) outer hull permits the ship to move quietly through the water at high speeds. A cylindrical pressure hull structure of HY-80 steel is supported by circular frames and enclosed by hemispherical heads at both ends. ![]() SSBN-726 class FBM submarines can carry 24 ballistic missiles with MIRV warheads that can be accurately delivered to selected targets from almost anywhere in the world's oceans. In 1996 the Navy started to backfit the eight submarines in the Pacific to carry the D-5 missile. The eight submarines in the Pacific were initially equipped with the C-4 Trident I missile. The ten Trident submarines in the Atlantic fleet were initially equipped with the D-5 Trident II missile. The commissioning of LOUISIANA completed the Navy's fleet of 18 fleet ballistic missile submarines. Naval Submarine Base Kings Bay hosted the commissioning of USS LOUISIANA (SSBN 743) 06 September 1997 at the TRIDENT Refit Facility Drydock. Missile submarines built in the 1960s and is far more capable. The Ohio class submarine replaced aging fleet ballistic The SSBN provides the nation's most survivable and enduring nuclear strikeĬapability. The fleet ballistic missile submarine (SSBN) since its inception in 1960. Strategic deterrence has been the sole mission of ![]()
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