DNV GL Building Service Targets Fuel Efficiency

MarineLink.com
Wednesday, March 19, 2014
SDARI Green Dolphin (Image: DNV GL)

DNV GL launched a new service named Build2Design to help shipyards and shipowners improve the fuel economy of their ships by reducing variations in their building process.

Significant improvements have been achieved in the design of more fuel-efficient ships in recent years. The performance of these Eco-Ship designs has been documented by both Computational Fluid Dynamics (CFD) and tank testing and some designs have also proven their performance in operation. However, questions have been raised about variations in performance and research has now shown a wide variation in different ships of the same design.

“We have compiled data that shows there is a large variation in fuel consumption between ships of the same design. This has led us to develop a new service, Build2Design, which aims at ensuring that the actual ship delivered is as good as its design,” said Michael Aasland, Business Director for Bulk Carriers at DNV GL.

Dr. Olav Rognebakke, Head of Hydrodynamics at DNV GL, added, “Build2Design is based on a solid theoretical foundation combined with the latest technology and uses advanced CFD calculations to identify the parameters that affect fuel consumption and the effect of each individual parameter.”

In developing the new service, DNV GL undertook a sensitivity analysis of over twenty parameters and considered both the complexity of addressing the parameter and the impact on fuel consumption of each parameter. The project’s results also show that the selection of the parameters will be design specific, since the flow around the ship hull varies from design to design.

“We have taken a cost/benefit approach when selecting the parameters so that the shipowner obtains the maximum benefit with the minimum impact on the shipyard,” said Aasland. “Just one of the parameters we are considering is the positioning and alignment of the bilge keel. Advanced CFD calculations show that a 0.5% reduction in resistance can be achieved by adjusting the position and angle,” he added.

From the first pilot project carried out on the Green Dolphin 38 design, a conservative estimate shows that a saving of 2% can be achieved, which equates to 80 metric tons of fuel/year and a saving of USD 50,000/year. Corresponding figures for a typical Capesize bulk carrier are 200 metric tons of fuel/year and a saving of $120,000/year.

The new service is being rolled out this spring, both through the Green Dolphin 38 pilot project for Goldenport at CSI Jiangsu and the first commercial project based on a Seahorse 35 design for Graig Shipping at Jiangdong SY.

“Today, hull lines are optimized with much greater sophistication than only a few years ago,” Aasland said. “DNV GL’s Build2Design service ensures that both yards and shipowners benefit from the latest research and best practices.”

dnvgl.com

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

Shipbuilding

Scottish Sea Farms Orders Newbuilds

Macduff Shipyards Ltd. has received a contract worth more than £3.3 million pounds from Scottish Sea Farms for the design and build of four 19.8-meter 150T steel

LNG Transport Barge Design Approved by ABS

Conrad Shipyard, L.L.C. engaged Bristol Harbor Group, Inc. (BHGI) to develop a 3,000 cubic meter Liquefied Natural Gas (LNG) transport barge utilizing a Bristol

Airbus May Sell Stake in Submarine Supplier

Airbus is considering a sale of its 49 percent stake in submarine supplier Atlas Elektronik as part of a reshuffle of its military business, German newspaper Die

Environmental

Japanese Technology Helps Farmers to Changes in Climate

The Japanese technology firms are using their experience in saving energy and in cloud technology to help farmers cope with changes in climate, cheaper imports and declining labor.

MARAD: Total Fuel Cycle Study for Natural Gas

The Maritime Administration (MARAD) released a study that evaluates total fuel cycle emissions for natural gas versus conventional marine fuels. Results showed

Caribbean Storm Likely to Strengthen, Veers Away from US

A low-pressure system moved over Puerto Rico on Friday and is expected to veer northeast away from the U.S. East Coast but still has an 80 percent chance of forming

Naval Architecture

EBDG Completes Repower of COLUMBIA

Elliott Bay Design Group (EBDG), a leading naval architecture and marine engineering firm with offices in Seattle, New Orleans and Ketchikan, Alaska today announced

LNG Transport Barge Design Approved by ABS

Conrad Shipyard, L.L.C. engaged Bristol Harbor Group, Inc. (BHGI) to develop a 3,000 cubic meter Liquefied Natural Gas (LNG) transport barge utilizing a Bristol

Ecuador Coastguard Orders Damen Patrol Boats

Damen announced it has recently signed a contract with AstillerosNavalesEcuatorianos (Astinave) to construct two Damen Stan Patrols (Spa) 5009 for the Ecuadorian Coastguard.

News

Japanese Technology Helps Farmers to Changes in Climate

The Japanese technology firms are using their experience in saving energy and in cloud technology to help farmers cope with changes in climate, cheaper imports and declining labor.

Sinopec's Profit up at 32.5 billion yuan in 1H, 2014

Asia's largest refiner - China Petroleum & Chemical Corporation announced Friday night, according to international accounting standards, the first half net profit of 32.

Kuwait to Boost Oil Exports to China

Kuwait plans to increase the volume of crude oil exports to China to 500,000 barrels a day (bpd) in three years, an executive at the state-run Kuwait Petroleum Corporation (KPC) said Saturday.

Classification Societies

Bureau Veritas to Class, Certify FPSOs for Saipem

Bureau Veritas has been awarded a contract by Saipem to provide classification and certification services for the two Kaombo FPSOs for service off Angola. The

'Double Jeopardy – Trial by Media, Trial by Law' London Opening

BIMCO notes that the highly acclaimed "Double Jeopardy - trial by media, trial by law" first showcased at the BIMCO AGM in Dubai earlier this year is to be brought

RS to Exhibit at SMM 2014

Russian Maritime Register of Shipping (RS) announced it will exhibit at Shipbuilding, Machinery and Marine Technology (SMM) International Trade Fair September 9-12, 2014 in Hamburg, Germany.

Consulting

EBDG Completes Repower of COLUMBIA

Elliott Bay Design Group (EBDG), a leading naval architecture and marine engineering firm with offices in Seattle, New Orleans and Ketchikan, Alaska today announced

Watson Named VP of Meridian Global Consulting

William H. Watson has been appointed as Vice President of Meridian Global Consulting, LLC, a Mobile, Alabama-based scalable risk mitigation specialist consultancy.

ST Engineering Singapore's Sole Ranker in Forbes' List

Singapore Technologies Engineering Ltd (ST Engineering) announced that it is the only company in Singapore to make it to Forbes’ list of The World’s Most Innovative Companies.

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Offshore Oil Pod Propulsion Port Authority Salvage 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: 0.4183 sec (2 req/sec)