digest ferry
manoeuvring technology news Steerprop adds to azimuth propulsor range
Steerprop is continuing to evolve its azimuth propulsor series, increasing both speed and power. Based in Rauma, Finland, the company now has the technology available to deliver up to 20MW per unit, which will make products highly attractive for applications such as cruise ships. The Steerprop dual-end
contra-rotating propeller (CRP) design offers high efficiency, particularly at speeds above 25 knots, combined with very low
levels of vibration, cavitation and noise. It is based on a simple, robust design with power from the vertical drive shaft being split to drive each propeller through a short intermediate shaft. Propeller speed is kept low, which offers long lifetimes for bearings and seals and reduces maintenance requirements and costs. Steerprop claims that the efficiencies of CRP products can provide fuel savings of up to 10 per cent.
MML55 is based on a single propeller design, mounted in a shroud incorporating radial
The Steerprop contra-rotating propeller delivers high efficiency
Azimuthal thruster added to Masson Marine product portfolio Masson Marine of France has now launched its first azimuthal thruster product. The new
Brunvoll Profile Advert 2009:Layout 1 16-04-09 15:20 Side 1
stator fins. The company claims a propulsive efficiency of 70 per cent for this arrangement, ›››
A successful story... Thruster Systems from BRUNVOLL
Brunvoll’s operation is dedicated to thrusters, and we supply and service complete thruster packages
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• Tunnel Thrusters • Azimuth Thrusters • Low-Noise Thrusters • Rim Driven Thrusters • Thruster Control Systems
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BRUNVOLL Strandgata 4-6, N-6415Molde Tlf. +47 71219600
e-mail:
office@brunvoll.no www.brunvoll.no
72 I Passenger Ship Technology I Spring 2012
www.passengership.info
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