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USS Zumwalt

Composite supper structure of 2nd ship of Zumwalt class is delivered by HII ;

HII delivers composite deckhouse for second Zumwalt-class destroyer - IHS Jane's 360

Huntington Ingalls Industries (HII) handed over its second and final composite deckhouse for the US Navy's (USN's) Zumwalt-class destroyer programme on 7 August.

HII's Gulfport Composite Center of Excellence based in Gulfport, Mississippi, manufactured the 900-tonne carbon fibre composite deck, which is to be barged up to Bath, Maine, where prime contractor General Dynamics Bath Iron Works (GDBIW) will integrate it onto the steel hull of second-in-class Zumwalt destroyer Michael Monsoor(DDG 1001).

Gulfport also produced the ship's 220-tonne composite hangar, which was delivered to the navy on 25 September 2013 and subsequently transported up to Bath.

As expected, HII has shuttered its Gulfport facility due to declining naval work in composites. The company was to have built a third deckhouse and hangar for the Zumwalt programme, but navy officials opted to return to an all-steel superstructure design on the third and final ship of the class, Lyndon B Johnson (DDG 1002), after failed price negotiations with HII. The USN subsequently awarded a USD212 million design and construction contract to GDBIW, the programme's prime contractor, on 2 August 2013.

USN programme officials previously told IHS Jane's that part of the decision was based on a decrease in the overall weight of the Zumwalt-class ships, which allowed the navy to revert to a steel deckhouse and hangar design.

The USN is acquiring a three-ship Zumwalt class. Lead ship Zumwalt (DDG 1000), which is being completed and tested at GDBIW, is expected to reach initial operational capability in 2016.

Michael Monsoor is expected to be ready for handover in 2016, followed by Lyndon B Johnson in 2018.

Its really a hard job to integrate supper structure on Ship's hull after construction, needs a precise engineering beside High accurate production, another issue is to make both structure having similar behaviour against global loads loads .
 
By:www.naval-technology.com
Delivery of US Navy’s first Zumwalt-class destroyer delayed
The delivery of the US Navy's General Dynamics-built first Zumwalt-class (DDG-1000) guided missile destroyer has reportedly been delayed.

According to the US Defense Department's annual 'Selected Acquisition Report' on the $22.4bn programme, the Navy has estimated that delivery of the first vessel will be by mid 2016, reported Bloomberg.

USS Zumwalt was originally scheduled to be delivered in September 2013, but was later expected to be handed over to the navy in November last year.
”The delays are due to overall effects of shipyard production and test challenges".”

The DDG-1000 is also not expected to be declared with an initial combat capability until 2019.

Bloomberg News cited a report sent to Congress last month as saying that the delays "are due to overall effects of shipyard production and test challenges".

Meanwhile, Navy spokeswoman captain Thurraya Kent, in an e-mail to the news agency said: "The DDG-1000 will begin acceptance trials later this month, and the ship is on track for commissioning on 15 October 2016."

Named in honour of late Admiral Elmo Zumwalt, the destroyers are being built at General Dynamics' Bath Iron Works unit in Bath, Maine, while Raytheon provides the vessel's combat electronics.

Capable of carrying a crew of 142, the 610ft-long Zumwalt multi-mission surface combatants have a displacement capacity of more than 15,000t when fully loaded, and are designed for littoral operations and land attack.

Featuring new technologies such as the Advanced Gun System from BAE Systems, the destroyer will use electricity generated by gas turbines to power all of its systems, including its weapons...................See more
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... you'ld expect it to take off and fly to outer space any moment now ;-)

Simply awesome.
 
Yes, it's so smooth and clean.
Btw, can I know your flag @Penguin ?
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Size difference between DDG-115 an AB destroyer and DDG-1001
XcamUqw.jpg
 
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Yes, it's so smooth and clean.
Btw, can I know your flag @Penguin ?
Size difference between DDG-115 an AB destroyer and DDG-1001
XcamUqw.jpg
... but the Zumwalt is (substantially) closer to the camera.

Burke: 154 m (Flight and II) or 155 m (Flight IIA) x 20 m x 9.3 m
Zumwalt: 180 m x 24.6 m x 8.4 m.

116% x 123% x 90%.....

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I'm stuck by how tall Zumwalt is, both in terms of the hull and of the superstructure.
 
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DDG-1000 Back In NAVSEA Focus
Posted on February 19, 2012 by David Tashji

GAO Probes DDG-51 Flight III for Ballistic Missile Defense

The United States Naval Sea Systems Command (NAVSEA) disclosed the findings of a recently completed study in a report that gives pause to revised plans to modify the Arleigh Burke-class destroyer as a platform for the Navy’s ballistic missile defense radar due to miscalculations concerning cost and complexity. The disclosures give renewed merit to the Navy’s original next generation DD(X) concept, lead vessel DDG-1000 Zumwalt, and another potential change of course concerning a prior reversal in acquisition strategy. EDITORS NOTE: Place cursor over photos to read captions.

In a highly controversial decision, NAVSEA had decided to re-start the DDG-51 class after awarding contracts that began new Arleigh Burke-class hulls at both the Bath Iron Works and Pascagoula Yards. This decision also reduced to three the number of DDG-1000 ships to be built, substantially increasing unit costs in spite of billions spent on the platform including the new Total Ship Computing Environment (TSCI), elements of which were to be incorporated into the Navy’s new CG(X) Cruiser. The decision to proceed with the Arleigh Burke-class DDG-51 Flight III was taken following Government Accountability Office (GAO) criticism of the DDG-1000 unit costs and the estimated USD $6B CG(X) unit
cost. The United States Navy (USN) believed at the time this decision was taken that it would be more prudent to fit the required Air and Missile Defense Radar (AMDR) to the DDG-51 than to proceed as originally planned with multiple DDG-1000’s.

Now however, the recent GAO findings show that the complications and costs of outfitting the 30-year old DDG-51 hull to accommodate requirements to support the ballistic missile defense mission system are an unrealistic compromise, opening an opportunity for the senate armed services sea power subcommittee to re-examine the efficacy of the original DDG-1000 acquisition strategy.

In addition to the USD 3.6B cost (one billion more than originally projected), a reduction in future weapons systems and complex form factor limitations would compromise the DDG-51 in ways that are unacceptable to USN doctrine. Replacing the current SPY-1D (V) radar with the AMDR suite of S-band and X-band radars also presents other major challenges including a ten-X increase in cooling and five-X increase in power systems requiring the addition of a fourth gas turbine auxiliary generator. A number of proposed mitigation strategies to overcome these power consumption challenges have been studied including the employment of a hybrid electric drive (HED) within a propulsion derived ship service (PDSS)architecture, as well as adaptation of the DDG-1000 integrated propulsion system.


However due to limitations that would create barriers for accommodating sensors and weapons in the future, the proposed designs present unacceptable cost, schedule and performance risks.

Other options being explored include Service Life Allowance (SLA) modifications which enables the Navy to expand hull forms (beam & length) and weight parameters to a limit that does not compromise established speed, center of gravity & seaworthiness survivability rules. This is not the first time that the USN has pushed SLA thresholds in a bid to accommodate technology advancements into legacy platforms. For example, in order to acquire the Aegis combat system the USN reduced weight in the deckhouse design of Ticonderoga class cruisers, ultimately leading to an abbreviated service life due to hull fractures.

The DDG-51 Flight III and DDG 1000 acquisition strategies represent the latest in a series of NAVSEA miss-steps that will have long lasting repercussions to the United States. As a nuclear arms race heats up in Southwest Asia and commerce critical waterways and vital chokepoints come under increased threat by pirates and rogue states, reversing course on the USN’s next generation surface combatant will not only create USD $Billions in costs for the US tax payer, but cause national security compromises and delays to the layered ballistic missile defense shield at a time when our nation can least afford them.
 
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By:www.rumormillnews.com
The first shadow patrols of the world's most powerful ship

The most powerful ship ever built by man, will enter into active service next October. This is the confirmation of the US Navy and General Dynamics Bath Iron Works for USS Zumwalt destroyer capable of engaging targets at a hundred miles away with electromagnetic cannons and a radar return so low as to appear as fishing vessel.

The first ship of the Zumwalt class, is now in the final stage of sea trials. By next summer there will be the Navy inspection. If the latter ends without problems, the sea acceptance testings will begin. Exceeded this stage, the largest and most powerful multirole destroyer ever built the US Navy, will enter service by early October.

The entire program cost is $ 23 billion. The total value of contracts for the three ships is estimated at $ 13.2 billion, about $ 4.4 billion by the boat. The second ship, the Michael Monsoor, will be delivered in November of next year, a few months behind the original timeline. The decision was taken due to the complexity of the project for the class defined as the most powerful in the world. The third and last of the class ship, the Lyndon B. Johnson, it will be delivered in December
2018.

The most powerful multi-role destroyers of the US Navy ever built, has been conceived, designed and armed for the war of the future at an exorbitant cost: $ 4.4 billion by the boat, about three times the cost of a current destroyers at a cost total of 13.2 billion dollars for three ships (the 32 initially were planned). From 2009 to 2015, the cost of each boat has increased by 34.4%.

It would be appropriate to point out that everything on the Zumwalt is unique in its kind. Its stealth profile, for example, should make it invisible to enemy radar. Despite being 40% larger than an Arleigh Burke, it has an RCS (Radar Cross-Section) of a fishing vessel.

The destroyer Zumwalt reintroduces the camber: the maximum width of the ship on the waterline, while progressing up the hull begins to shrink.
Its unusual hull then, was designed with technology wave penetration or wave-piercing for a maximum speed of 30 knots (56 km / h).

It 'was designed to pour a devastating firepower even if severely affected. The Zumwalt class is armed with eighty Tomahawk cruise missiles (spread over various pod Vls Mk 57 advanced, throughout the ship so as not to lose the missile capabilities even if affected), two guns Ags 155 mm, two 57 mm and batteries evolved Sea Sparrow.

The Advanced Gun System or Ags deserves a separate discussion. Shoot projectiles rocket eleven pounds, with a margin of error (CEP) of 50 meters, at a maximum distance of 154 km. Each unit will have a capacity of 750 bullets. The AGS pipe is water-cooled to prevent overheating, while the rate of fire is ten rounds per minute per gun. The combined firepower of a pair of towers would give to each class destroyers Zumwalt a fire power of twelve guns from M198 range.

The Zumwalt will be equipped with laser defense systems designed to shoot down enemy aircraft and drones and electromagnetic cannon capable of firing projectiles at hypersonic speeds. According to the US Navy, the laser technology is designed to eliminate the asymmetric threats such as drones, small planes and speedboats: all potential threats to the warships in the Persian Gulf.

The electromagnetic guns have already been tested. We speak of tungsten projectiles that reach the target with a speed equal to seven times that of sound, to a higher power (at a much lower cost) to a Tomahawk missile. This weapon will give the Zumwalt the role of "true warfighter game changer".

On board space will find two helicopters Sh-60 / Seahawk (Lamps Mk III) for anti-submarine warfare three Mq-8 Fire Scout, not-piloted helicopters developed for the armed reconnaissance. The size of the ship and power plant capable of producing 78 megawatts of electricity - enough to power 78,000 homes - make it an ideal platform for future weapons like the rail gun.

Ships fifteen thousand tons have a growth margin of 10%, equal to more 1,500 tons of future technology to be implemented in the system without altering the performance of the boat.

The level of automation achieved finally, would be so high that the ship will be enough to lead a crew of 158 members, half of those required for the current generation of destroyers (an operational lifetime of 35 years would save taxpayers $ 280 million for ship).

The Zumwalt represent the breaking point between the past and the new scenarios of the future war. As well as for the F-22, the only fighter in the world why the term was coined plane domain, even the Zumwalt boast of such appellation. Its electromagnetic weapons should enable it to impose the domination of any sea and against any enemy. The nom de
guerre of Zumwalt's "Silver Bullet" silver bullet..................Read more

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