Norwegian Navy Embraces Electrification

By Michelle Howard
Tuesday, May 20, 2014

GE’s Power Conversion business (NYSE: GE) has announced that it is working with Daewoo Shipbuilding and Marine Engineering Co., Ltd. (DSME) in South Korea to provide an electrical power and propulsion system for a Norwegian Defence Logistics Organization (NDLO) logistics and support vessel (LSV). GE’s equipment will be installed as a key part of the ship’s hybrid propulsion system, improving fuel efficiency and operating flexibility.


In October 2012, GE’s Power Conversion business announced a similar project for the U.K. Royal Fleet Auxiliary’s new fleet of four military afloat reach and sustainability (MARS) tankers. These will be the U.K.’s next-generation class of large, fast-fleet tankers that will deliver fuel, fresh water and supplies to Royal Navy ships including the Queen Elizabeth Class aircraft carriers.


Once completed, the NDLO’s newest LSV, built by DSME, will measure 180 meters in length by 26 meters in beam and have a loaded displacement of more than 26,000 tons. The new vessel is planned to enter service in October 2016.


“The future to keeping navies at sea for longer, further from home ports and with increased resilience is by making them as operationally efficient as possible. A key reason we chose GE’s Power Conversion business for our latest logistics and support vessel is because their technologies makes this possible. Coupled with the vast experience GE holds in this domain globally and most recently on the MARS tankers, we feel they are the strongest partner in helping us make sure the latest LSVs are of the highest performance standards,” said Commander Senior Grade (Cdr SG) Christian Irgens of NDLO.


Hybrid propulsion systems—like the one being used for this project—combine both electrical and mechanical equipment to turn the ship’s propellers throughout the speed operating range. The Norwegian LSV will have two independent propeller shafts each driven via a gearbox by either a large propulsion diesel or a relatively small electric motor. When the ship is operating at moderate or low speeds, the propeller shafts are turned using GE’s electric motors with speed control for each motor being provided by the use of a low-voltage variable speed drive. The electrical power for the motors is supplied from the generators used to supply the remainder of the ship’s services. This reduces the number of generators in operation and often allows those that are in use to be run at a more efficient operating point.


When the ship is required to operate at higher speeds, the main propulsion diesel engines are started and the propellers are now turned, via the gearboxes, by these engines. The propulsion motors now can be operated in the opposite sense as generators, using a small amount of energy from the propulsion engines to supply electricity to the ship’s services. This in turn allows the ship service generators to be shut down once again reducing overall operating hours of the ship’s diesels and saving maintenance cost.


This hybrid configuration is a versatile propulsion solution and is particularly suited to the fluctuating operational scenarios encountered by naval warships and auxiliaries. Using electric propulsion motors powered by the ship’s generating sets to turn the propeller saves fuel, reduces emissions and reduces maintenance costs of the main engines, which can be shut down. The generating sets are running to meet other electrical needs of the ship anyway, so the overall number of hours run by the various diesel engines onboard is reduced.


Not only is GE providing the propulsion motor and variable speed drive equipment to DSME, but it also will supply switchboards, alternators, cargo pump drives and the bow thruster motor and drive. GE Power Conversion system engineers have been working very closely with the DSME shipyard, the NDLO and other equipment suppliers to ensure that the electrical power system is fully integrated and will deliver the efficiency and reliability expected.


“Our electrical drive train technology provides the NDLO with a highly efficient, flexible and integrated power and propulsion system for its critical military operations,” said Mark Dannatt, naval business director for GE’s Power Conversion business. “This project is another example of a growing trend among the world’s navies to use GE’s electric propulsion technology and a good example of how our system design can be tailored to meet the exacting requirements of the owner.”


 


 

Maritime Reporter February 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

ThyssenKrupp Says Submarines Part of Growth Story

Germany's Thyssenkrupp sees its submarine business as making an important contribution to its growth targets, the head of its Industrial Solutions business area said on Tuesday.

Two Newbuilds Delivered to Star Bulk

Star Bulk Carriers Corp. took delivery on February 27 of M/V Honey Badger (ex HN NE 164) and M/V Wolverine (ex HN NE 165), two 61,000 dwt Ultramax bulk carriers

Brazil Truck Strike Diminishes

Some truck drivers in Brazil continued blocking roads on Tuesday, slowing grains deliveries to southern ports, even as adherence to the strike diminished and a

Technology

ThyssenKrupp Says Submarines Part of Growth Story

Germany's Thyssenkrupp sees its submarine business as making an important contribution to its growth targets, the head of its Industrial Solutions business area said on Tuesday.

Added Value Innovation Drives Control of BWTS

Specifying for ballast water treatment systems can be a difficult process. Ian Hamilton, sales manager for marine electrical wiring control and instrumentation specialists CMR Group, offers guidance.

“Bright Ideas” program - Ash Center - Harvard University

The Ash Center for Democratic Governance and Innovation at the John F. Kennedy School of Government, Harvard University, recognized the Port of Houston Partners

Shipbuilding

Shipping Industry Faces Shake Up

As global shipping grapples with its worst downturn in 30 years, private equity firms are unwinding massive bets made on the sector in a move set to accelerate

ThyssenKrupp Says Submarines Part of Growth Story

Germany's Thyssenkrupp sees its submarine business as making an important contribution to its growth targets, the head of its Industrial Solutions business area said on Tuesday.

Gas Turbine Alternator Installed into Aircraft Carrier

The Aircraft Carrier Alliance has completed the installation of the first MT30 Gas Turbine Alternator (GTA) package into the Royal Navy’s latest aircraft carrier HMS Prince of Wales,

Navy

Emergency Mediterranean SAR Needs Crowdfunding

Mediterranean SAR operation needs crowdfunding to save lives in 2015   The independent Search and Rescue (SAR) operation MOAS (Migrant Offshore Aid Station) is

Gas Turbine Alternator Installed into Aircraft Carrier

The Aircraft Carrier Alliance has completed the installation of the first MT30 Gas Turbine Alternator (GTA) package into the Royal Navy’s latest aircraft carrier HMS Prince of Wales,

ICS: EU Must Act in Mediterranean Crisis

The International Chamber of Shipping (ICS) says EU Member States must act urgently to prevent the loss of thousands more lives, as the humanitarian crisis in the

Marine Power

USCG Marine Safety Alert

The U.S. Coast Guard issued a marine safety alert today to remind all gas carrier owners and operators to ensure that all personnel follow approved Safety Management

USCG Marine Safety Alert

The U.S. Coast Guard issued a marine safety alert today to remind vessel owners and operators to establish effective fuel oil changeover procedures during efforts

Gas Turbine Alternator Installed into Aircraft Carrier

The Aircraft Carrier Alliance has completed the installation of the first MT30 Gas Turbine Alternator (GTA) package into the Royal Navy’s latest aircraft carrier HMS Prince of Wales,

Marine Equipment

Gas Turbine Alternator Installed into Aircraft Carrier

The Aircraft Carrier Alliance has completed the installation of the first MT30 Gas Turbine Alternator (GTA) package into the Royal Navy’s latest aircraft carrier HMS Prince of Wales,

Added Value Innovation Drives Control of BWTS

Specifying for ballast water treatment systems can be a difficult process. Ian Hamilton, sales manager for marine electrical wiring control and instrumentation specialists CMR Group, offers guidance.

Hospital Ship Brought up to Speed with AMOS

SpecTec will work with long term partner Mercy Ships to migrate its current system Business Suite to AMOS Enterprise Management Suite (EMS).   Mercy Ships’ Africa Mercy,

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Offshore Oil Port Authority Salvage Ship Electronics Ship Repair Shipbuilding / Vessel Construction
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: 0.3249 sec (3 req/sec)