Electric Boat, which built all 18 Ohio-class submarines, will do most of the work on all 12 Columbias, including final assembly. Navy chose General Dynamics Electric Boat as the prime contractor and lead design yard. There are 159 specifications including weapons, escape routes, fluid systems, hatches, doors, seawater systems, and a set length of 560 ft (170 m), partly to allow for sufficient volume inside the pressure hull. In April 2014, the Navy completed a 300-page specification report for the Ohio Replacement Program submarines. The high cost of the submarines is expected to cut deeply into Navy shipbuilding. The total lifecycle cost of the entire class is estimated at $347 billion. The Navy has a goal of reducing the average cost of the remaining 11 planned hulls in the class to $4.9 billion each (fiscal 2010 dollars). The cost to build District of Columbia, the lead boat of the class, will be an estimated $6.2 billion (fiscal 2010 dollars). The design and technology development of the Columbia-class is projected to cost $4.2 billion (fiscal 2010 dollars), although technology and components from the Ohio and Virginia classes are to be included where possible, to save money. For example, while both the modified Virginia-class and updated Ohio-class design options would have required an expensive mid-life refueling, each Columbia-class nuclear core will last as long as the submarine is in service. Using the information from these studies, the Navy concluded that a new design would be the least expensive option that could meet all of the technical requirements. Cost-reduction studies explored design and construction possibilities, including adding missile tubes to the design of the Virginia-class attack submarine, building Ohio-class replacement submarines using updated Ohio-class designs, and developing an entirely new Ohio Replacement Submarine design. Also taken into consideration was how the maintenance schedule of each submarine will affect that boat’s availability to be deployed on mission. Navy looked at the number of missiles required to be at sea and on station at any given time, the number of missiles each submarine should be armed with and the likelihood that a submarine will remain undiscovered by the enemy and be capable of launching its missiles. In studies to determine how many submarines would be needed to support the United States' strategic nuclear force, the U.S. The submarines will be 560 feet (170.7 m) long and 43 feet (13.1 m) in diameter, as long as the Ohio-class design, and 1 foot (30 cm) larger in diameter. Each submarine will have 16 missile tubes, each carrying one Trident II D5LE missile (to be upgraded to D5LE2s from the ninth submarine onward after fiscal year 2039). A total of 12 submarines are planned, and construction of the lead boat began in 2021. Įlectric Boat designed the new class with help from Newport News Shipbuilding. The Columbia class will take over the role of submarine presence in the United States’ strategic nuclear force. The Columbia class is to replace the Ohio class of UGM-133 Trident II–armed ballistic missile submarines, whose remaining boats are to be decommissioned, one per year, beginning in 2027. In the announcement, the Navy continued to refer to the class as the Columbia class. On 3 June 2022, the Navy announced that this first boat will be named USS District of Columbia (SSBN-826), because there currently exists an attack submarine named USS Columbia (SSN-771). It is scheduled to enter service in 2031. Construction of the first submarine began on 1 October 2020. The Columbia-class (formerly known as the Ohio Replacement Submarine and SSBN-X Future Follow-on Submarine) is an upcoming class of nuclear-powered ballistic missile submarines designed to replace the Ohio-class of the United States Navy. US$9.15 billion per unit (FY2021, projected)Ģ0,810 long tons (21,140 t) (submerged) Įnlarged version of the Virginia-class LAB sonar ġ6 × Trident D5 and twin torpedo tubes.US$109.8 billion for 12 boats (FY2021, projected).Artist's rendering of the planned Columbia-class submarine (Naval Sea Systems Command)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |