Page 32: of Maritime Reporter Magazine (June 2014)

32 Maritime Reporter & Engineering News • JUNE 2014 ? res the new long range land attack pro- jectile (LRLAP). DDG 1000 has two of these 155-mm gun mounts to provide all-weather volume and precision ? res in support of joint forces ashore, and

DDG 1000 has two of these 155-mm gun mounts to provide all-weather volume and precision ? res in support of joint forces ashore. The 2.13m long, GPS- guided, rocket-assisted LRLAP round has a range of up to 100 km, the longest range of any naval gun, and can engage targets with an accuracy of a few feet.

The 80 peripheral vertical launch sys- tem (PVLS) missile tubes can carry a variety of missiles, including the Toma- hawk land-attack cruise missile. These missiles can attack ? xed targets with great accuracy, but can also loiter around a battle ? eld and get instructions from friendly forces on the scene. Those tubes can also carry the Evolved Sea Sparrow

Missile (in quad-packs that load four missiles into a single PVLS cell) for air defense and AntiSubmarine Rockets that are tipped with torpedoes.

This ship looks different, too. The large composite superstructure and distinctive “tumblehome” hull — which slopes in- ward toward the center of the ship as it rises up from the waterline — results in a reduced radar cross section and acoustic signature, making Zumwalt one of the stealthiest surface combatants ever. The

Raytheon SPY-3 X-band active phased- array radar detects the most advanced low-observable antiship cruise missile (ASCM) threats.

DDG 1000 has 16 electronics module enclosures (EMEs) that are fully out? t- ted with 230 cabinets. The EMEs are produced by Raytheon and are fully test- ed and ready to install, saving 110,000 man hours per ship.

The ship is totally integrated thanks to the Total Ship’s Computing Environ- ment (TSCE) from Raytheon and the command and control software integra- tion of the various computing domains that permits the networking and integra- tion of internal and external information into ef? cient displays for control and monitoring of the ships systems. Ray- theon created 6.7 million lines of code to date for the integrated system that controls everything from ship and ma- chinery control to combat management, weapons control and automated ? re sup- pression.

Despite the fact that it’s almost 50 per- cent bigger than the 9,000-ton DDG 51, it has a much smaller crew. The 14,500 ton DDG 1000 has a crew of crew of 142, including the aviation detachment, which will operate a pair of Sikorsky

MH-60R Seahawk helicopters and three

Northrop Grumman MQ-8B Fire Scout

UAVs (compared to the DDG 51 crew of 281, not counting the air detachment).

The all-electric integrated propulsion system has the power for future weapons such as electromagnetic rail guns and la- sers.

DDG 51

As the Navy is ending the procurement of DDG-1000 with the third ship, it has instead “restarted” the DDG 51-class Ae- gis destroyer production line. The DDG 51 program began in the 1970s, and is the largest class of combatants in the world. The ? rst ship of that class— USS

Arleigh Burke (DDG 51)—was commis- sioned in 1991 and is currently undergo- ing a midlife modernization, the ? rst of the 62 Arleigh Burkes to do so. With the truncation of the DDG 1000 program at three just three ships, the DDG 51 pro- duction line has been reopened, with several more ships of the current con- ? guration Block IIA con? guration will be built. The Block IIA ships are longer than their predecessors and have a heli- copter hanger. With DDG 122, the Navy will begin a new air and missile defense variant which will feature the new air and missile defense (AMDR) radar.

Aegis Modernization

The Navy is modernizing the Aegis ?eet with a midlife update to the com- bat systems and hull, mechanical and electrical (HM&E) systems. Some Aegis ships—including destroyers and some cruisers— are being modi? ed to have an additional capability for ballistic missile defense (BMD) operations. The modi? - cation for BMD operations entails new software program for the Aegis combat system and the arming of the ship with the SM-3 missile, a version of the Na- vy’s Standard Missile that is designed for intercepting ballistic missiles.

JHSV

Originally planned as a joint Army-

Navy effort, the Joint High Speed Ves- sel (JHSV) is now a Navy program. The split-up came over the aviation capabil- ity. The Army said, “Why would you build a ship with a helicopter deck?” and the Navy said “Why would you build a ship without a helicopter deck?” JHSV has a ? ight deck that can operate an MH- 60 Seahawk helicopter, although it does not have a hangar.

Based on a high-speed commercial ferry design, the all-aluminum JHSV has signi? cant internal volume for vehi- cles, but is strengthened for very heavy equipment, such as M1A1 Abrams main battle tanks and Mine Resistant Armor

Protected (MRAP) vehicles, as well as the mechanized wrecking cranes large enough to handle them.

A crew of 22 Military Sealift Com- mand civilians operates the vessel, while additional military mission personnel can embark as required. The JHSVs have berthing for up to 146 personnel, and there is also airline-type seating for 312 troops and their weapons (it even has racks for stowing weapons) .

The 1,500-ton ferry is powered by four

MTU diesel engines and four waterjets, and can achieve speeds up to 43 knots.

Built for long transits, JHSV is consid- erably stronger than other ferries to be able to handle high sea states—up to sea state 7.

MLP

General Dynamics NASSCO is build- ing the unique mobile landing platform (MLP). Based on a tanker design, the ship can ballast down so that the main deck is awash, and landing craft can be discharged or recovered, and transfer personnel and vehicles from other ves- sels such as the large, medium-speed, roll-on/roll-off ships (LMSRs) onto landing craft air cushioned (LCAC) ve- hicles and transport them ashore. The ship’s size allows for 7,620 square me- ters of vehicle and equipment stowage space and 380,000 gallons of JP-5 fuel storage.

USNS Mountford Point (MLP 1) re- turned to San Diego on April 30 follow- ing following installation of the ship’s

Core Capability Set (CCS) at Vigor Ma- rine, LLC in Portland, Ore. The CCS en- ables the transfer of vehicles, personnel and equipment from vessels such as the

Large, Medium-speed, Roll-on/Roll-off

Ships onto Landing Craft Air Cushioned (LCAC) vehicles for movement to shore.

MLPs will have a maximum speed of 15 knots and range of 9,500 nautical miles.

At 239 meters long, MLPs displace over 80,000 tons when fully loaded. MLPs will operate with a crew of 34 Military

Sealift Command personnel.

THE 2014 YEARBOOK: NAVY SHIPBUILDING

The guided-missile destroyer USS Ross (DDG 71) is moored pierside at BAE

Systems Ship Repair at Norfolk, Vir- ginia. Ross is undergoing the execu- tion phase of her availability prior to system restoration. Norfolk Ship Sup- port Activity recently completed initial phases of a piloted Master Integrated

Schedule on Ross.

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