The submarine has the capacity for 24 Trident missile tubes in two rows of 12. Lockheed Martin received a contract in January 2002 for the production of 12 Trident II missiles for the four submarines. Conversion of the four Trident I submarines remaining after START II (Henry M Jackson, Alabama, Alaska and Nevada) to Trident II began in 2000 and was completed in 2008. The first eight submarines, (SSBN 726 to 733 inclusive) were equipped with Trident I and the following ten (SSBN 734 to 743) carry the Trident II. The new missiles are expected to remain in service till the 2040s. The submarines received the new D5LE missiles in 2013 under the D5 life extension programme. The Trident was built in two versions, Trident I (C4), which is being phased out, and the larger and longer-range Trident II (D5), which entered service in 1990. Ohio Class submarine is equipped with the Trident strategic ballistic missile from Lockheed Martin Missiles and Space. In March 2008, USS Michigan successfully completed the operational evaluation of ASDS across a range of operational conditions. It was also fitted to Los Angeles Class submarines USS Charlotte (SSN-766) and the USS Greeneville (SSN-772) and will equip the Virginia Class SSNs. ASDS is equipped with multiple sonars, GPS/ inertial navigation, communications and electronic support measures (ESM). Each Ohio SSGN had its two forward-most missile tubes converted into ASDS capable lock-out chambers. The Northrop Grumman advanced SEAL delivery system (ASDS) is a submersible for the delivery of US Navy SEALs and combat gear to the shore. The SSGN will have the capacity to accommodate 66 SEALS. The experiment included validation launches of two Tomahawk missiles, the first-ever launch of an unmanned underwater vehicle (UUV) and insertion of a navy SEALs force. In January 2003, USS Florida took part in Naval Sea Systems Command (NAVSEA) experiment ‘Giant Shadow’ to test the capabilities of the new SSGNs. It also gave Ohio the ability to dive deeper than diesel-electric submarines and allowed it to have a virtually unlimited range, restricted only by its food supply.In November 2007, USS Ohio left for final trials off Hawaii before beginning its first operational deployment as an SSGN in the western Pacific Ocean. Its nuclear reactor enabled Ohio, like other SSBNs, to stay submerged for months at a time. It was originally armed with four torpedo tubes and 24 missile silos - eight more than its predecessors - capable of firing UGM-96 Trident I SLBMs. At 560 feet long and 42 feet wide, Ohio and its follow-on boats are the largest submarines in US history. As a result, a number of SSBNs were retired or refitted and reclassified as attack subs to make room for Ohio-class subs to enter service.Īs the newest SSBN in the Navy, Ohio was a considerable upgrade. The SALT I and SALT II treaties between the US and the Soviet Union put limitations on their nuclear forces, including the number of submarine-launched ballistic missile (SLBMs) silos each could possess. Ohio and the boats that followed were ballistic-missile submarines, classified as SSBNs, and meant to replace the aging boats of the five previous SSBN classes, known as the " 41 for Freedom," which were commissioned between 19. USS Ohio was commissioned in November 1981. Tugs guide USS Ohio out of dry dock in Bangor, Washington, August 15, 1983. Account icon An icon in the shape of a person's head and shoulders.
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