Feature 3 | PROPELLERS AND THRUSTERS
BAT for our side.
than 0.8 and a design speed in the 14 to 16knot range. Here efficiency gain can be as much as 6% to 9% compared with conventional solutions. Faster and slenderer single screw vessels such as car carriers can have an efficiency gain of 2% to 5%. In a well designed twin screw vessel there is less improvement to
Mewis Duct system from Becker Marine Systems.
be had, but even so 1% to 3% can represent a substantial amount of money at today’s fuel prices. The first contract for Promas covers
four shipsets, each with a 5.2m diameter CP propeller, to be installed in a series of 33,500dwt bulk carriers. Te vessels are being
built by Nantong Mingde shipyard in China for shipowner Kristian Jebsen. Similar energy savings can be gained
from Becker Marine Systems Mewis Duct system. In March, ship model basins in Hamburg and Potsdam verified the fuel saving
Propellers and Shafting packages designed and manufactured for superior performance, maximum speed, minimum noise and vibration. Ideal for:
❖ Patrol Boats ❖ Fast Ferries ❖ Luxury Motor Yachts ❖ Crew Boats
Military/Civilian applications. Monohulls/Catamarans/Trimarans
STONE MARINE SINGAPORE (PTE) LTD 4 Tuas Basin Close, Singapore 638797. Tel: (65) 68632681, Fax: (65) 68632683 Email:
smsprops@singnet.com.sg, Website:
www.stonemarine.com.sg
60 The Naval Architect July/August 2009
Feature 3
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