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

New Products

KEP Marine Unveils KMGBL

KEP Marine – the manufacturer of type approved displays, computers and peripherals, announced  the release of the affordable, high-quality KMGBL Glass Bridge Light Displays.

Scorpio Tankers to Acquire Product Tanker

Scorpio Tankers Inc. announced today that it has entered into an agreement to purchase an MR product tanker. The Company reached an agreement with an unrelated

Carrier for Kansai Electric Power Named LNG FUKUROKUJU

Mitsui O.S.K. Lines, Ltd. today took part in a naming ceremony for the newbuilding liquefied natural gas carrier LNG FUKUROKUJU, which is co-owned by MOL and Kansai Electric Power Co.

Marine Propulsion

Eastern Launches Second MPSV for Hornbeck

Eastern Shipbuilding Group, Inc. has launched the second of two 302’x76’x26’ multipurpose service vessels in the HOSMPSV 310ES series for Hornbeck Offshore Services, LLC.

MARAD Support for Hydrogen Fuel Cell R&D

The U.S. Department of Transportation’s Maritime Administration (MARAD) today announced that it is providing $500,000 to support a feasibility study for the design,

Carnival’s Costa Brand Orders Two LNG Cruise Ships

Costa’s two new cruise ships will be the largest ever built based on guest capacity; Costa will join sister brand AIDA Cruises in building the first-ever cruise

Energy

Côte D’Ivoire Invests in O&G Safety Training

Thegrowth in oil and gas activity in Côte D’Ivoire has seen investment in standardized safety training in the region far outstrip that of other hydrocarbon-rich West African countries,

Next Wave of FLNG Projects on the Horizon

There will be significant growth in both investment and activity in the FLNG market over the next seven years, with Douglas-Westwood (DW) forecasting total expenditure of $58.

Philippines Mulls Massive Military Spend

Philippine generals on Wednesday asked Congress to almost triple annual defence spending over the next five years to upgrade equipment amid an escalating marine dispute with giant neighbour China.

Container Ships

Matson Pumps $30 Million into Alaska Operations

Ocean cargo shipper Matson, Inc. said it is moving quickly to fund improvements in its new Alaska operations following its May 29 acquisition of Horizon Lines' Alaska services.

Diana Containerships Sells Panamax Ship

Diana Containerships Inc. sells Panamax containership, the m/v Cap Domingo   Diana Containerships Inc. today announced that it has signed, through a separate wholly-owned subsidiary,

Work Begins on $1.6 bln Container Terminal at Jebel Ali Port

DP World Chairman Sultan Ahmed Bin Sulayem announced the start of construction work on a brand new container terminal at Jebel Ali Port, Dubai.   Phase 1 of the

Marine Equipment

Matson Pumps $30 Million into Alaska Operations

Ocean cargo shipper Matson, Inc. said it is moving quickly to fund improvements in its new Alaska operations following its May 29 acquisition of Horizon Lines' Alaska services.

Sea Trucks Returns to the Gulf of Mexico

Offshore installation services provider Sea Trucks Group announced it has been awarded a charter contract for its accommodation construction vessel Jascon 31 to operate in the Gulf of Mexico,

Eastern Launches Second MPSV for Hornbeck

Eastern Shipbuilding Group, Inc. has launched the second of two 302’x76’x26’ multipurpose service vessels in the HOSMPSV 310ES series for Hornbeck Offshore Services, LLC.

Vessels

Eastern Launches Second MPSV for Hornbeck

Eastern Shipbuilding Group, Inc. has launched the second of two 302’x76’x26’ multipurpose service vessels in the HOSMPSV 310ES series for Hornbeck Offshore Services, LLC.

NYK Vessel Rescues 336 in the Mediterranean

On July 14, Hermes Leader, a car carrier operated by NYK Line, rescued 336 people in the Mediterranean Sea. On July 14, the vessel received an emergency

IRSHAD Acquires Damen Shoalbuster 2308

Abu Dhabi Petroleum Ports Operating Company (IRSHAD), a part of the ADNOC Group of Companies, has taken delivery of a Damen Shoalbuster 2308, named Al Marfa 1.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Standards Naval Architecture Navigation Pod Propulsion Port Authority Ship Electronics Ship Repair Winch
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: 0.1564 sec (6 req/sec)