Innovative engineering for environmentally-friendly products
Becker Marine Systems faces its responsibility for sustainable and environmentally-friendly developments by continuously reducing the environmental footprint of Becker products.
To achieve this ambitious goal, Becker is pursuing a three-part approach – by avoiding hazardous and environmentally harmful materials, increasing efficiency and developing sustainable processes. This is done in cooperation with our suppliers, which are verified by independent testing organisations.
Efficiency: using valuable resources the right way
Even though ships are the most effective means of transport with lowest emission rates, every opportunity should be taken to decrease emissions. From a hydrodynamic perspective there are two ways of accomplishing this:
1. Increasing the hydrodynamic efficiency of the propeller itself.
2. Decreasing the drag caused by the ship and its propulsion components.
Solutions developed by Becker:
1. The uneven wake of the ship causes the propeller to work inefficiently, resulting in rotational losses which do not contribute to the generation of thrust. Our Becker Mewis Duct® is a power-saving device assembled in front of the propeller. It features a wake equalising nozzle which harmonizes the flow towards the propeller and pre-swirl generating fins that minimize rotational losses. For bulky and slower ships (up to 16kn service speed) fuel savings of up to 9% can be achieved with corresponding reductions in green house gases, nitrogen oxide and sulphur.
2. The rudder generates about 5% of the ship’s overall drag. This is influenced by the rudder profile, the different lateral flow conditions at the top and bottom of the rudder and turbulence caused by propeller swirl and additional drag caused by rudder operations for staying on course. Becker achieves reduced resistance by implementing thinner rudder profiles employing high quality material and forged steel, twisted leading edge (Becker Twist Rudder) towards different flow directions of propeller swirl, highly manoeuvrable flap rudders generating greater steering forces and thus requiring smaller rudder angles for low resistance course keeping and reduced hub vortex by the use of rudder bulbs or in combination with corresponding propeller hub cap arrangements.
Avoiding hazardous materials
Becker products are employed in rough sea conditions. For this reason, an important property of Becker products is preventing the release of hazardous substances into the marine environment. For bearings that are in permanent contact with or are often exposed to sea water Becker has moved away from complex sealing systems towards sea water lubrication. This results in: No hazardous substances being released, no disposal of used lubricants and no failure of safety-relevant rudder system due to permanent lubrication by the surrounding medium.
Where sea water is not available or practical for lubrication, environmentally-friendly lubricants are used. If coating is not applied by the yard, Becker offers the latest standards of biocide-free coatings with minimal emission of volatile components during the coating process.
Becker Marine Systems ensures the sustainability of processes along the whole value chain, from manufacturing and operation up to the time our products are recycled.
For this reason, Becker cooperates with reliable partners and suppliers that are certified and meet the highest standards. All shareholders are embedded into a comprehensive quality system comprising three columns represented by Becker’s quality department itself, external independent quality assurance institutes and approval in close cooperation with classes. This enables us to provide complex and highly diverse processes worldwide with minimal environmental impact.