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Becker Twisted Fin®

Becker Twisted Fin®

Becker Twisted Fin®

Product catalog summary
Introduction
Becker Marine Systems has developed the Becker Twisted Fin®, an energy-saving device designed for fast vessels with bulbous sterns, such as container ships. This innovation follows the success of the Becker Mewis Duct® and aims to meet the demand for fuel efficiency in faster ships.

Key Features and Benefits
  • Fuel savings of up to 3%.
  • Reduction in NOx and CO2 emissions.
  • Return on investment within 6-15 months.
  • Long-term structural guarantee.
  • Power reduction verified by model tests with a "money saved or money back" guarantee.
  • Suitable for both newbuildings and retrofits.
  • No moving parts, requiring no maintenance.
  • Fast installation process.

Development and Design
The Becker Twisted Fin® is an advancement from the Becker Mewis Duct®, specifically designed for ships traveling at speeds above 18 knots. It features a smaller nozzle ring with a flat profile to reduce drag and special end caps to prevent cavitation. The device is tailored to each ship's hull geometry, propeller design, and engine data, ensuring optimal performance.

Testing and Implementation
Model tests and full-scale operations have demonstrated average fuel savings of 3% for container ships. The first order, consisting of ten installations for Hamburg Süd's 7,100 TEU container vessels, confirmed these savings with an average of 3.5%. The installations were completed swiftly, showcasing Becker's efficiency and expertise.

Combination with Becker Twisted Rudder TLKSR®
For maximum energy savings, the Becker Twisted Fin® can be combined with the Becker TLKSR® Twisted Rudder. This combination optimizes energy savings both in front of and behind the propeller, contributing to compliance with new EEDI requirements.

Conclusion
The Becker Twisted Fin® represents a significant advancement in maritime energy-saving technology, offering substantial fuel savings and emission reductions for fast vessels. Its successful implementation and potential for further optimization with the Becker Twisted Rudder make it a valuable asset for shipping companies.
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Catalog excerpts

Becker Twisted Fin®-1

Becker Twisted Fin® Advancement of Becker Mewis Duct® for fast vessels with bulbous stern Becker Marine Systems has reacted to the heavy demand of shipping companies for an energy-saving device for faster vessels. After two years of research and based on three years operational experience with the Becker Mewis Duct® a new energy-saving device for container ships and other types of fast vessels with bulbous stern is entering the market – the Becker Twisted Fin®. • Fuel savings of up to 3% • Reduction of NOx and CO2 emissions • Return on investment in 6-15 months • Structural guarantee of many years • Guarantee of power reduction as verified by model test: “Money saved or money back” • Suitable for newbuildings and retrofits • No moving parts, no maintenance required • Fast installation The Becker Twisted Fin® installed on Hamburg Süd’s Santa Clara

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Becker Twisted Fin®-2

Becker Twisted Fin® Illustration of water flow influences on the Becker Twisted Fin® The development from duct to fin Becker Marine Systems has focused on energy savings and pro­ vides one of the most efficient energy-saving devices for the mar­ itime market with the Becker Mewis Duct®. On average, power savings of over 6% could be achieved for large and slow vessels such as tankers and bulkers. The savings from the Becker Mewis Duct® are reduced at speeds above approx. 20 knots. Becker Marine Systems is now introduc­ ing the Becker Twisted Fin® for faster ships with speeds above 18 knots. Like...

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Becker Twisted Fin®-3

Becker Twisted Fin® First order – ten installations After the successful model tests of the Becker Twisted Fin® prototype at the beginning of 2012, Becker Marine Systems signed a contract with Hamburg Süd in June 2012. The Hamburg-based ship owner ordered the new energy-saving device for fast types of ships as retrofits for a series of ten 7,100 TEU container vessels. The fuel-savings potential of the Becker Twisted Fin® for these vessels has been verified in a model test with an average savings of 3.5%. The experience of hundreds of successful Becker Mewis Duct® installations made it possible...

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Becker Twisted Fin®-4

Becker Twisted Fin® Maximising energy-saving effects – Becker Twisted Fin® combined with the Becker Twisted Rudder TLKSR® The combination of a Becker rudder and a Becker Twisted Fin® allows maximum possible energy savings in front of and behind the propeller. Both products are available from a single company and are thus perfectly harmonised via CFD calculations in the design of optimised manoeuvring and maximum energy savings. Becker Marine Systems constantly reviews the best combinations of a Becker Twisted Fin® or a Becker Mewis Duct® with a Becker rudder, thus making an important contribution...

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