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 Reporter August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Dann Marine Repowers With Cummins Tier 3 Engines

Dann Marine Towing, LC., is a fifth generation family owned and operated tugboat company based in Chesapeake City, MD. The model-bow twin-screw tug Sea Coast was

MAN-Powered Cargo Vessel Meets Tier III

Classification society awards SCR system emissions certificate. MAN Diesel & Turbo has been awarded a Tier III - compatibility certificate by the DNV- GL classification

Vroon’s VOS Famous Launched

Vroon’s newbuilding ERRV, VOS Famous, was launched in China yesterday. This 50-m ERRV (emergency response and rescue vessel) is under construction at Nanjing East Star Shipyard.

Shipbuilding

Deep Sea Supply takes Delivery of 'Sea Triumph'

The Deep Sea Supply  took delivery of the newbuilding Platform Supply Vessel 'Sea Triumph'  on Thursday 18 September.  The vessels 'Sea Triumph' is a STX 05-L

Lilaas Engages Imtra for N. American Distribution

Strong prospects in the North American marine equipment market have triggered a new importation and distribution agreement between control specialist Lilaas

Ingram Barge Order 20 Tank Barges for 2015

Ingram Barge Company say they will be building 20 tank barges in 2015 to meet growing demand for chemical shipments. While most of the company’s recent tank barges have come through acquisitions,

Navy

AN/SPY-1 SSSA Completes Critical Design Review

The Critical Design Review (CDR) stage for AN/SPY-1 radar Solid-State Switch Assembly (SSSA)'s high voltage modulator completed Aug. 26, confirming that the

General Dynamics Wins US Navy Award for F/A-18 Mission Computers

General Dynamics Advanced Information Systems, a business unit of General Dynamics, was awarded a $16.2 million contract by the U.S. Navy to produce Type-3 Advanced

Phoenix International Awarded US$75-M Subsea Navy Contract

US Department of Defense inform that Phoenix International Holdings Inc., Largo, Maryland, is being awarded a $75,000,000 indefinite-delivery/indefinite-quantity,

 
 
Maritime Careers / Shipboard Positions Navigation Pipelines Pod Propulsion Ship Electronics Ship Repair Ship Simulators Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | 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: 0.5131 sec (2 req/sec)