MAN Diesel Expands CP Propeller Portfolio

Monday, October 12, 2009
Photo courtesy MAN Diesel

In response to the market demand for very large CP propellers up to and beyond 30,000 kW and with diameters over eight meters, MAN Diesel is expanding its propeller portfolio to add two new, propeller hub-sizes – VBS2080 and VBS2240 (2080 mm and 2240 mm hub diameters respectively).

These propeller sizes are typically destined for ConRo vessels, shuttle tankers and special vessels with high ice classes, and powered by MAN B&W two-stroke MC-C or ME-C main engines that directly drive a CP propeller.

As the potential for improving propeller propulsive efficiency aft-ship optimization is far greater than that for improving diesel-engine fuel-oil economy, MAN Diesel has devoted more resources to its CP propeller program and associated aft-ship systems in recent years, with the aim of improving total propulsive efficiency by 8-10% within the next three to five years.

Backed up by industry demand, MAN Diesel focuses on low environmental impact and optimal fuel-oil consumption. While these two factors can play against each other in diesel-engine design, they go hand-in-hand with propellers since an increase in propeller efficiency results in lower propulsion power and fewer emissions.

Where the correct approach to the vessel-design process is taken and MAN Diesel are involved at an early stage in propeller and aft-ship optimization, propeller efficiency improvements and bollard-pull increases of (respectively) 5-7% and 8-12% can be attained compared to a standard, conventional, CP propeller solution. Such solutions offer even greater potential in retrofit projects where fuel-consumption reductions of up to 12.5% have been reported.

The new Alpha propeller hubs, like the smaller, well-proven ones, focus on reliability, low wear-rates and service-friendliness as they are serviceable from the aft-end, with no dismantling required.

Alpha is also the first CP market series where both the stern-tube system and propeller hub can operate on biodegradable oil, eliminating any risk to the environment and guaranteeing internal propeller lubrication, even in the event of seawater contamination.

(www.mandiesel.com)

Maritime Reporter April 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

5th Floating Accommodation for Lerwick

A further accommodation ship, Ocean Atlantic, is due at Lerwick on Monday 27 April 2015 and is on its way from Portland in Dorset. As with the other floating accommodation at the port,

Double Order for Super Gloria Reachstacker

Kalmar, part of Cargotec, has gained an order for two Super Gloria reachstackers from Tadarsa Logistics S.L. in Aviles, Spain. The largest reachstackers ever built,

BIMCO Welcomes EU Decision on Migrants

BIMCO has stated today that it appreciates the new efforts by EU leaders to reduce increasing reliance on merchant shipping to rescue the growing numbers of

Marine Propulsion

Incat Crowther Designs Commercial Security Vessel

Incat Crowther has received a contract to design an offshore commercial oilfield security vessel for Veecraft Marine and its client, UTM Dredging Ltd, the designer announced today.

SCHOTTEL to Present Inland Offerings

SCHOTTEL will present its expertise to the U.S. inland market at the upcoming Inland Marine Expo in St Louis, June 15-17, 2015: strong push boats in Brazil, big

MHI to Shift Operations from Yokohama Kanazawa

Mitsubishi Heavy Industries, Ltd. (MHI) and Mitsubishi Hitachi Power Systems, Ltd. (MHPS) have decided on a policy to transfer operations currently performed

 
 
Maritime Careers / Shipboard Positions Maritime Security Naval Architecture Navigation Offshore Oil Pipelines Pod Propulsion Port Authority Ship Simulators Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1665 sec (6 req/sec)