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9 février 2015 1 09 /02 /février /2015 17:20
USS George Washington (CVN 73) Photo US Navy.

USS George Washington (CVN 73) Photo US Navy.


5 February 2015 naval-technology.com


The US Navy has awarded a contract to Huntington Ingalls Industries (HII) for advance planning of the refuelling and complex overhaul (RCOH) work on the Nimitz-class aircraft carrier USS George Washington (CVN 73).


The latest $224m modified contract will finance the planning work for the RCOH and purchase long-lead materials, including pumps, breakers, valves and steel, to support the fabrication of structural units.


Newport News Shipbuilding in-service aircraft carrier programmes vice-president Chris Miner said: "The company has worked closely with our navy partners, performing ship checks and selected planning tasks associated with the defuelling of the ship.


"This contract award allows us to move beyond defuelling and plan all the work associated with a full RCOH, which underscores the navy's continued commitment to ensuring this great national asset remains in the fleet and operational for another 25 years."



Work will be performed at HII's Newport News Shipbuilding unit, which has previously undetaken RCOH work on the initial four Nimitz-class ships.


USS Abraham Lincoln (CVN 72), the fifth vessel, is 60% complete and set for delivery in 2016.


RCOH involves refuelling of the reactors and refurbishing more than 2,300 compartments, 600 tanks and hundreds of distributive systems.


The project also involves an upgrade to the food service areas, aircraft launch and recovery systems, combat systems and its island.


HII started defuelling work on USS George Washington, which is scheduled for completion by July, last year.

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9 février 2015 1 09 /02 /février /2015 17:20
Construction continues on US Navy's John Warner submarine

USS John Warner during its final outfitting, testing and crew certification phase at Newport News Shipbuilding's submarine pier. Photo: courtesy of Ricky Thompson / HII.


4 February 2015 naval-technology.com


Construction work on the US Navy's latest Virginia-class submarine John Warner (SSN 785) is 96% complete.


The submarine is currently undergoing final outfitting, testing and crew certification phases at Huntington Ingalls Industries' (HII) Newport News Shipbuilding unit.


On schedule for delivery later this year, the submarine will undergo initial sea trials, including a series of operational assessments to demonstrate its capabilities.


Newport News Shipbuilding submarines and fleet support vice-president Jim Hughes said: "This is a special milestone for the shipbuilders and the crew.


"From now on, this ship will take on the personality of her crew as they move aboard. For the shipbuilders, it marks significant progress toward delivery and reminds us that we are not only building a warship, but a home for these sailors as they work to protect our country."


John Warner, which is the 12th Virginia-class submarine, is being constructed in compliance with navy requirements.


The vessel has sophisticated technology to improve firepower, manoeuvrability and stealth.


With a displacement of 7,800t, hull length of 377ft and a diameter of 34ft, Virginia-class submarines are capable of cruising at a maximum speed of more than 25k and can dive more than 800ft deep. They can also stay submerged for approximately three months at a time.


The vessels can be armed with Mark 48 advanced capability torpedoes, Tomahawk land-attack missiles and unmanned underwater vehicles, and can be used for anti-submarine, surface-ship warfare and special operations support.

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