New Energy-Saving Device: the Becker Twisted Fin

Press Release
Thursday, February 14, 2013

Becker Marine Systems continues to focus on energy savings.

 

The new product innovation for container ships and other fast vessels was developed with the combined expertise acquired from Becker rudders for fast ships and the Becker Mewis Duct  for slower vessels. Becker Marine Systems continues to offer advanced solutions to the maritime market and since 1946 has been renowned worldwide for improving the manoeuvrability of all types of ships. Furthermore, Becker Marine Systems has focused on energy savings and provides one of the most efficient energysaving devices for the maritime market with the Becker Mewis Duct. On average, power savings of over 6% could be achieved and by December 2012 more than 150 vessels have been equipped with the Becker Mewis Duct. In the last three years over 350 systems have been sold. Becker Marine Systems has reacted to the heavy demand of shipping companies for a similar device for faster vessels. After two years of research and based on three years operational experience with the Becker Mewis Duct  Becker Marine Systems has developed a new energy-saving device tailor-made for container ships and other types of fast vessels with bulbous stern – the Becker Twisted Fin.


The savings of the Becker Mewis Duct  are reduced at speeds above approx. 20 knots, which is why this solution is for slower ships such as tankers, bulk carriers and heavy load vessels. Becker Marine Systems is now introducing the Becker Twisted Fin  for faster ships with speeds above 18 knots. Like the Becker Mewis Duct , the Becker Twisted Fin  has no moveable parts, is also installed in front of the propeller and generates a pre-swirl. The system thus provides fast ships tangible energy savings. The nozzle ring is significantly smaller than that of the Becker Mewis Duct and has a special, flat profile with much lower drag. The fins familiar from the Becker Mewis Duct  on the inside of the nozzle ring extend outwards beyond the nozzle.

 

To prevent the formation of a swirl with cavitation at the ends of the fins Becker has developed special end caps for the fins. The small nozzle ring generates thrust, provides stability to the fins and reduces vibrations. Computational Fluid Dynamics (CFD) tests, model tests and full scale operation have shown fuel savings averaging 3% for container ships. Even better results can be obtained with the combination of a Becker Twisted Fin  and the Becker TLKSR  Twisted Rudder. The well-proven Becker Mewis Duct  business model will be continued with Becker Marine Systems’ guarantee of the vessel’s power reduction as verified by a model test. Each Becker Twisted Fin  system is individually designed according to hull geometry, propeller design and engine data. The design takes into account the newest strength, fatigue and vibration requirements from classification societies.

After the successful model test of the Becker Twisted Fin  prototype in early 2012, in June 2012 Becker Marine Systems had already signed a contract with Hamburg Süd to retrofit the Becker Twisted Fin  system on a series of ten 7,100 TEU container vessels. The tank tests were conducted at HSVA in Hamburg in October 2012 and the first installation took place at Damen Shipyard in Rotterdam in December 2012. The big challenge was the installation time of three days and a total docking time of five days. The complete installation was carried out during the normal class docking of the vessels. Following the first journeys, the measured power savings from the model test were able to be reproduced during the vessel’s operation. With Becker Marine Systems’ energy-saving devices, the Becker Mewis Duct  and the Becker Twisted Fin , customers are prepared to fulfil the newest EEDI regulations.


Benefits of the Becker Twisted Fin:
 

- Fuel savings of up to 3%
- Reduction of NOx and CO2 emissions
- Suitable for newbuildings and retrofits
- No moving parts, no maintenance required
- Fast installation
- Structural guarantee

Maritime Today


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

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

New Products

Groningen Seaports First in Line for Damen InvaSave

The first production version of Damen’s InvaSave ballast water treatment system – intended for use at Groningen Seaports – will be on display at the upcoming ‘DelfSail’

First MAN D2676 Workboat Engine Ready for Launch

Last December, MAN Engines introduced its latest generation in-line six-cylinder engines for workboats. Now the first MAN D2676 LE443 engine off the production

LUKOIL Introduces New Crankcase and Cylinder Oils

LUKOIL Marine Lubricants has introduced the newly formulated NAVIGO 6 CO crankcase oil and NAVIGO 70 MCL AW cylinder oil, offering newly designed additive packages

Energy

New DNV GL Marine Warranty Standards are a Digital First

The energy industry’s only Standard for the warranty approval of marine operations is published  by DNV GL. The Standard is the first to deploy a digital solution

Gas Plant Fire Halts US Gulf Coast Platforms

At least two offshore oil platforms halted operations on Tuesday in the U.S. Gulf of Mexico after a fire at a natural gas processing plant in Mississippi shut a

China's Robust Crude Oil Imports Mask Changing Fuel Dynamics

China is a bigger concern for crude oil and products markets than the current worries about the British vote to leave the European Union.   While the news media

Container Ships

Essberger Fleet Moves to Marlink’s Sealink VSAT Service

The Hamburg headquartered John T. Essberger (JTE) Group will migrate the primary communication systems of its entire fleet to Sealink, Marlink’s global maritime broadband VSAT service.

EU to Accept Antitrust Offer from Maersk, MSC, 13 Others

World No.1 container liner Maersk, Swiss peer MSC and 13 other shipping firms are set to escape possible penalties as EU antitrust regulators plan to accept their offer to end a five-year probe,

EU to Accept Antitrust Offer From Maersk, MSC, 13 Others

World No.1 container liner Maersk, Swiss peer MSC and 13 other shipping firms are set to escape possible penalties as EU antitrust regulators plan to accept their offer to end a five-year probe,

Marine Equipment

Fundraiser Held for USS Gerald R. Ford Crew

Blackmer, a company in positive displacement and centrifugal pump and reciprocating compressor technologies, has a relationship with the U.S. Military that dates

Boskalis Secures Dike Reinforcement Project

Royal Boskalis Westminster N.V. announced that the Noorderzijlvest district water board intends to award the contract for the Eemshaven-Delfzijl dike reinforcement

Groningen Seaports First in Line for Damen InvaSave

The first production version of Damen’s InvaSave ballast water treatment system – intended for use at Groningen Seaports – will be on display at the upcoming ‘DelfSail’

Vessels

Six-Month High for Service Reliability

Ocean carriers achieved a six-month high for liner service reliability in May, according to Carrier Performance Insight, the online schedule reliability tool provided by Drewry Supply Chain Advisors.

NYK Vessel First to Make Commercial Transit through Expanded Panama Canal

On June 27, the expanded Panama Canal opened for commercial transit, and Lycaste Peace, a very large liquefied petroleum gas (LPG) carrier operated by NYK, was

Latin America Ports to Berth Larger Vessels

Foreign trade and energy have boosted economies throughout the Americas. From the USA, to Argentina, Ecuador and the Bahamas, Maersk is helping unleash the region’s

 
 
Maritime Standards Naval Architecture Navigation Offshore Oil Pod Propulsion 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: 0.1072 sec (9 req/sec)