New High-power Waterjet Propulsors for Navy LCS

Press Release
Wednesday, February 06, 2013
The littoral combat ship Pre-Commissioning Unit (PCU) Fort Worth (LCS 3) conducts builders trials in Lake Michigan. (U.S. Navy photo courtesy of Lockheed Martin by Michael Rote/Released)

The Navy's fifth littoral combat ship (LCS), 'Milwaukee', the first to benefit from high-power density waterjets.

The product of an Office of Naval Research (ONR) Future Naval Capabilities (FNC) program, the waterjets arrived last month at the Marinette Marine shipyard in Wisconsin, where Milwaukee (LCS 5) is under construction.


Developed by Rolls-Royce Naval Marine in Walpole, Mass., in collaboration with ONR and Naval Surface Warfare Center, Carderock Division, the new Axial-Flow Waterjet Mk-1 can move nearly half a million gallons of seawater per minute, providing more thrust per unit than current commercial waterjets. Four of the new waterjets will propel the LCS to speeds greater than 40 knots.



Researchers believe the smaller, more efficient waterjets will help the LCS avoid excessive maintenance costs associated with cavitation - a phenomenon that occurs when changes in pressure create air bubbles on rotating machinery, such as marine propellers. Repeated occurrences can cause whole chunks of metal to wear away, leading to frequent repairs and replacements.


"We believe these waterjets are the future," said Dr. Ki-Han Kim, program manager in ONR's Ship Systems and Engineering Research Division. "Anything that we can do to keep ships ready to go will ultimately benefit our warfighters."



Chief of Naval Operations Adm. Jonathan Greenert's 2013-2017 Navigation Plan calls for fielding improved ships to support counterterrorism and irregular warfare missions at sea and ashore. The LCS will play a big role in the Navy's plan as a modular, adaptable vessel for use against diesel submarines, littoral mines and attacks by small surface craft.


Next up for the waterjets will be full-scale sea trials on Milwaukee (LCS 5), expected to occur in the next 24 months.



Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter May 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

MAN 28/33D STC Engines for Thai Navy’s New OPV

The Royal Thai Navy has ordered a new 90-m offshore patrol vessel (OPV) to be constructed at Mahidol Adulyadej naval dockyard in Sattahip.  The newbuilding, an improved River-class design,

Norsafe Debuts New RIB in Gothenburg

Norsafe has released its first RIB, the Marathon 900, to compliment its range of boat models for professional and military customers.  Launched at High Speed

Wärtsilä Donates Engine to Texas A&M University

Wärtsilä has donated an 8-cylinder Wärtsilä 20 engine and generating set, to the Marine Engineering Technology Department at Texas A&M University at Galveston.

Shipbuilding

NASSCO Lays Keel for Jones Act Tanker Liberty

U.S. shipbuilder General Dynamics NASSCO hosted a keel laying ceremony on Thursday, May 26 for the Liberty, one of three new ECO Class Jones Act tankers under a

SAFE Boats Delivers First CIV for Air and Marine Operations

SAFE Boats International (SBI), a manufacturer of aluminum boats located in Bremerton, Wash., has completed the first Coastal Interceptor Vessel (CIV) on contract from U.

Defense Appropriations Bill Includes $1 Bln for US Icebreaker

The U.S. Senate Appropriations Committee’s FY2017 Defense Appropriations Bill has included $1 billion in funding to accelerate construction of a new polar icebreaker for the U.

Navy

Phoenix Express 2016 Concludes

Maritime forces from North Africa, Europe, and the United States concluded exercise Phoenix Express 2016 with closing ceremonies in Souda Bay, Greece May 27. Phoenix Express,

US Hospital Ship Aids South Korean Sailor

A U.S. hospital ship conducted a medical evacuation, or “medevac”, May 27 to assist an ailing Republic of Korea sailor aboard a Republic of Korea Navy (ROK-N) submarine.

MAN 28/33D STC Engines for Thai Navy’s New OPV

The Royal Thai Navy has ordered a new 90-m offshore patrol vessel (OPV) to be constructed at Mahidol Adulyadej naval dockyard in Sattahip.  The newbuilding, an improved River-class design,

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Navigation Pod Propulsion Port Authority Ship Simulators Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0880 sec (11 req/sec)