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

1,000th Becker Mewis Duct to Be Presented at Nor-Shipping

Hamburg-based Becker Marine Systems will present its 1,000th Becker Mewis Duct in Oslo at Nor-Shipping 2015.   The use of all ducts previously delivered will have lowered CO2 by more than 1.

Shell Declares Force Majeure on Forcados Crude Exports

Shell has declared force majeure on exports of Nigeria's Forcados crude oil stream, a spokesman for the company said on Wednesday.   It declared force majeure

IMCA Publishes Security, Emergency Guidance

The threat to maritime security from piracy, terrorism, criminal acts, and hostage and kidnapping threats continues to pose challenges to ships’ owners, masters and crew members,

Marine Propulsion

1,000th Becker Mewis Duct to Be Presented at Nor-Shipping

Hamburg-based Becker Marine Systems will present its 1,000th Becker Mewis Duct in Oslo at Nor-Shipping 2015.   The use of all ducts previously delivered will have lowered CO2 by more than 1.

Modernization for Two Swedish Icebreakers

Protacon, a company based in Jyväskylä, Finland, informs it has received an order from Swedish Maritime Administration for the modernization of electric and automation systems of two icebreakers.

IMO’s MEPC Set to Adopt Polar Code Provisions

Polar Code environmental provisions set for adoption at IMO’s Marine Environment Protection Committee   The Marine Environment Protection Committee (MEPC) of

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Navigation Offshore Oil Pipelines Ship Electronics Ship Simulators Shipbuilding / Vessel Construction Winch
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: 0.6014 sec (2 req/sec)