propeller nozzle for ships
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Fuel saving, environmentally friendly Mewis Duct ® • Propulsion improvement • Fuel saving up to 8 % • Low NOX and CO2 emission • No moving parts • Retrofits and newbuilding • Ideal for tankers and bulkers WWW.BECKER-MARINE-SYSTEMS.COM MANOEUVRING M AT E R I A L H A N D L I N G COMMUNICATION

Fuel saving, environmentally friendly Mewis Duct VLCC, length 318.0 m, beam 60.0 m, draft 20.0 m, Fuel consumption t/day (85 % MCR): 831 Fuel price per t (June 2008): 640 $ Fuel consumption, 150 days at 85% MCR plus 150 days at 70% MCR per year: 22,7001 Fuel bill per year: 14,000,000 $ 5 % fuel cost saved per year Becker Marine Systems' R&D team has always focused on ship propulsion improvement in order to save fuel and reduce The Mewis Duct® is an elegant and simple optimizer for vessels with high block coefficient. It reduces the propulsion power by optimizing the water flow. The duct and...

The wake field of bulky and full ships with high block co- efficient reduces the propulsion efficiency of the propeller. The water inflow has such an unfavourable characteristic that the propeller does not get enough water. The Mewis Duct® harmonizes and stabilizes the flow and generates a consistent load distribution on the propeller blades. The integrated fins have a stator effect by generating a preswirl in counterdirection of the propeller operation, this generates a higher load on the propeller and there- fore more thrust. The fins are asymmetrically profiled and arranged to generate a...

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