MHI Installs MALS (Mitsubishi Air Lubrication System)

press release
Wednesday, October 03, 2012
MALS Concept Sketch: Air bubbles covering the vessel's bottom, like a carpet of air.

For First Time and Verifies Over 5% Fuel Efficiency Improvement - Sights On Expanded System Applications to High-speed, Slender Hull-form Ships.

 

Mitsubishi Heavy Industries, Ltd. (MHI) has installed its innovative "Mitsubishi Air Lubrication System" (MALS) for the first time on a ferry - a ship with a slender hull form* - and confirmed over 5% improvement in fuel consumption. MALS is MHI's proprietary technology that reduces frictional resistance between the ship hull and seawater by introducing a layer of air bubbles blown from the ship's bottom. The verification experiment was conducted at sea using the FERRY NAMINOUE, a ship owned by Japan's A-LINE Ferry Co., Ltd. that went into service starting September 27. The experiment results have verified that MALS is also applicable to high-speed, slender ships as an effective way to reduce fuel consumption and reduce environmental burdens, further extending the range of ship types for which MALS is suited.
 

The FERRY NAMINOUE is an 8,072 gross tonnage (GT) ship 145 meters (m) in length, 24m wide, and with a designed draft of 6.2m. It was built at MHI's Shimonoseki Shipyard & Machinery Works and plies the Kagoshima-Amami-Okinawa route in southern Japan.

 

MHI considers development of energy-saving technology for ships to be one of its most important tasks, in order to combat global warming in the area of marine transportation. In 2010 the company installed MALS for the first time on two module carriers operated by NYK-Hinode Line, Ltd. - first the YAMATAI, then the YAMATO - and confirmed significant energy savings. To expand MALS' application range, MHI next proceeded to develop a system applicable to high-speed, slender ships, which have a comparatively smaller flat area at the ship bottom and are thereby considered technologically difficult to apply MALS effectively. Installation of the system on the FERRY NAMINOUE was realized thanks to the full cooperation extended by A-LINE Ferry Co., Ltd.

 

During the speed trial test at sea, fuel consumption improvement (reduction in propulsion power required) exceeding 5% was confirmed even with waves as high as 2.5-3m. These results verified reduction of frictional resistance by MALS even when installed on high-speed, slender ships. The level of fuel consumption reduction suffices to offset the fuel consumption increase such a ship's marine diesel engine requires to comply with tightened controls on NOx (nitrogen oxide) emissions. As the air bubbles function as a cushion, noise and vibration are also reduced, enabling improvements in passenger comfort.

 

Going forward MHI will continue to monitor the operational conditions of the FERRY NAMINOUE and verify MALS' effectiveness in both energy saving and CO2 reduction. The company expects that as a system friendly to the environment MALS will play a solid role in protecting the beautiful nature of the Amami Islands and Okinawa.

 

The verification experiment using the FERRY NAMINOUE was supported by ClassNK (Nippon Kaiji Kyokai) as a joint research project.

 

Note: A slender hull-form ship refers to a ship with relatively small block coefficient (Cb). Cb = volume of displacement divided by the volume of the block defined by a ship's length x breadth x draft. Ships with a comparatively large Cb value are known as "full hull-form ships."

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

Technology

Aberdeen Pupils Peek into Subsea Oil & Gas Technology

Pupils at an Aberdeen primary school were given a rare insight into the depths of the oil and gas industry’s subsea sector after getting to sit in the driving

AVEVA, DNV GL's Sesam Integration Cuts Cost

Integration of Aveva and DNV GL's Sesam Reduces Costs in Maritime and Offshore Engineering. Engineers designing ship hulls and offshore floaters can now save

Bestobell Bags HHI's Valve Order

Bestobell Marine, a world leading supplier of cryogenic valves for ships, has won a major new order from Hyundai Heavy Industries (HHI) in South Korea to supply valves for two new vessels.

Shipbuilding

AVEVA, DNV GL's Sesam Integration Cuts Cost

Integration of Aveva and DNV GL's Sesam Reduces Costs in Maritime and Offshore Engineering. Engineers designing ship hulls and offshore floaters can now save

FORAN for Pertamina's Future Ships

FORAN has been chosen by state-owned company PERTAMINA to review the design of their future oil product carrier ships, under construction in a shipyard with the FORAN System.

Bestobell Bags HHI's Valve Order

Bestobell Marine, a world leading supplier of cryogenic valves for ships, has won a major new order from Hyundai Heavy Industries (HHI) in South Korea to supply valves for two new vessels.

Ship Repair & Conversion

MSC Geneva Gets Fatter

A revolutionary new option to scrapping for younger panamax containerships deemed too small for a tradelane involves widening the vessel rather than adding length.

Record Bulk Shipping Demolition Rates in 1H15

Monthly demolition rates in the dry bulk shipping sector averaged 3.3 million DWT for 1H15, according to new figures from BIMCO, compared to 1.3 million DWT last year.

Silversea Cruises Plans New Flagship

Cruise operator Silversea Cruises has unveiled its new flagship, the Silver Muse, which will begin sailing the seas in April 2017.    Built by Italian shipbuilding company Fincantieri,

Environmental

Aberdeen Pupils Peek into Subsea Oil & Gas Technology

Pupils at an Aberdeen primary school were given a rare insight into the depths of the oil and gas industry’s subsea sector after getting to sit in the driving

U.S. Draft Recovery Plan for Threatened Polar Bears

U.S. wildlife managers released on Thursday a draft plan for stemming the decline of polar bears threatened by melting Arctic sea ice linked to global warming,

New Binding Law of The Sea Agreement Advanced

WOC Sustainable Ocean Summit (Singapore, 9-11 November 2015) Will Enable Industry to Organize its Input to this Major New Ocean Treaty Development The U.N.

Passenger Vessels

Search for Missing after Philippine Ferry Sinks, 38 dead

Divers will search waters in the central Philippines on Friday for 15 people still missing after a ferry carrying 187 passengers and crew sank a day earlier,

Silversea Cruises Plans New Flagship

Cruise operator Silversea Cruises has unveiled its new flagship, the Silver Muse, which will begin sailing the seas in April 2017.    Built by Italian shipbuilding company Fincantieri,

Silversea Cruises Orders Luxury Ship from Fincantieri

Shipbuilder Fincantieri has received an order to build a new luxury cruise ship for client Silversea Cruises due for delivery in April 2017.    At 40,700 grt and accommodating 596 guests,

Marine Power

FORAN for Pertamina's Future Ships

FORAN has been chosen by state-owned company PERTAMINA to review the design of their future oil product carrier ships, under construction in a shipyard with the FORAN System.

CNOOC Acquires Asia's 1st LNG Powered Tug

China National Offshore Oil Corporation (CNOOC) has taken delivery of Asia’s first tugboat Hai Yang Shi You 525, designed to operate solely on liquefied natural gas as ship’s fuel.

The Submarine Electricity Transmission Market Is Expected to Reach $25 Billion in 2024

According to a new report from Navigant Research, the global submarine electricity transmission market is expected to grow from $16.8 billion in 2015 to $24.8 billion in 2024.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Navigation Pipelines Salvage Ship Electronics 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: 0.4524 sec (2 req/sec)