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Propeller

MAN Diesel Expands CP Propeller Portfolio

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


Wärtsilä Opens Propeller Factory in China

Propeller in the new factory Wärtsilä's joint venture company in China, Wartsila CME Zhenjiang Propeller Co Ltd., inaugurated its new propeller factory at Zhenjiang in Jiangsu province. The new factory is expected to double Wärtsilä's capacity to manufacture this type of propellers. During the past ten years the output has increased by 500 percent. In 2007 up to May, there are 425 vessels contracted in China, which is 45 percent of the global vessel order intake


Mercury Marine Acquires Teignbridge Propellers

Mercury Marine announced today that it has acquired Teignbridge Propellers Ltd., headquartered in Newton Abbot, United Kingdom. Teignbridge Propellers produces bronze and Nibral (nickel, bronze, aluminum) propellers for yachts, patrol boats and commercial vessels. In addition to its line of standard and custom propellers, Teignbridge also produces a complete underwater package of stern gear for inboard-powered vessels, which includes rudders, shafts, struts, seals, logs and bearings.


Wärtsilä Acquires Propeller Repair Business in the U.K.

Wärtsilä has acquired the UK-based propeller repair company McCall Propellers Ltd. The company's net sales are $12.7m with 33 employees. McCall Propellers is the largest marine propulsion support services company based in the U.K. specializing in emergency repair of propeller equipment. The acquired company has purpose-built repair facilities next to Glasgow Airport, and work is carried out either in the workshop or on site anywhere in the world.


Container Ship Propellor Damage Fixed by FN Diving

Photo credit FN Diving

Heavy shaft vibrations led  a container shlp owner to call in FN Diving in Rotterdam for underwater repair of the propellor. The inspection of the propeller revealed a deformation on one of the blade tips due to impact damage, the blade was found bent up to a 70 degree angle towards pressure side, while the tip of the next blade was broken off. In cooperation with the Propeller manufacturer, FN Diving determined an in situ repair plan.


New Fixed Pitch Propeller Design from Wärtsilä

Wärtsilä introduced the FPP Opti Design, a new fixed pitch propeller (FPP) design concept. According to Wärtsilä, the new design offers fuel savings of up to 4 percent and highly reliable full scale performance predictions. The concept has been developed utilizing the latest computational fluid dynamics (CFD) technology. The Wärtsilä FPP Opti Design has been developed at the company’s Technology and Service Centre in the Netherlands


Propeller Retrofits Saves 10 Percent Fuel

Benefits of fitting CLT propellers include fuel savings of around 10 percent while maintaining the same speed, according to Geneva-based shipowner Cargill International SA, which has recently released consumption figures for two of its Panamax bulk carriers. The 70,000 dwt Powhatan and Paiute had CLT propellers retrofitted in February and March 1998, after Cargill had already benefited from more than two years' first-hand experience of the CLT propeller concept developed by Madrid-based


Cleaning a Propeller

Luis.jpg

From the desktop of Luis Velarde, courtesy Rice Propulsion A propeller is exposed to all sorts of attacks underwater, such as rusting and adhesions of the sea. It is the key piece of the ship’s propulsion system, and thus deserves special attention.  The propeller is the element that allows the transformation of the mechanical energy of the engine into propulsion. A propeller in poor state is a disaster


UMC and MPR Join Forces

Worldwide underwater ship maintenance specialists UMC International and Dutch based marine propeller repair specialists Maritime Propeller Repairs (MPR) have signed an agreement to cooperate for workshop and in-water propeller repairs.   The agreement was signed in Asperen, The Netherlands on 23rd September 2011, at an open day hosted by MPR.  More than 300 visitors attended the event, and all were very enthusiastic about the new joint service


Schottel Celebrates CPP Milestone

Schottel SCP controllable-pitch propeller systems of the 5-X series are available with  power ratings from 1,000-20,000 kW.

German propulsion giant Schottel looks back at five decades of  controllable-pitch propeller (CPP) development. CPPs have been developed and produced on the Baltic coast of Germany since 1962 – initially in Rostock, and then in Wismar from 1964. The first units were manufactured for 86 freezer-trawlers of type Tropik for the Soviet Union. Four additional types were produced for GDR fishery vessels. The first years of controllable-pitch propeller production in Wismar centered on


Caterpillar to Equip 4 AHTS for Grupo CBO

The design An illustration showing what the Havyard 843 will look like when it is completed in a few years time.

  Caterpillar Marine informed that its Cat® power and propulsion solutions have been selected to power four AHTS vessels for Grupo CBO, headquartered in Rio de Janeiro, Brazil.  Each AHTS vessel will be equipped with 4 x 6 M 32 C propulsion engines rated at 3000 bkW and Cat


AHTS Proves Strength on (in & through) Ice

Brage Viking: Zamakona built, Caterpillar MaK powered, Ice capable

While the large oceangoing variety of ships garners the lion’s share of attention in regards to Arctic operations, modern offshore vessels that will be required to support potential oil and gas business in the region are equally vital. Viking Supply Ships recently carried out full scale ice


Partnership Promotes Seawater Lubrication

Scott Groves (left), Business Development Manager at Thordon Bearings, and Leslaw Hnat (right), Chairman of the Board of MSR Gryfia, sign an agreement that affirms the companies’ efforts to convert ships to seawater lubricated propeller shaft lines from oil.

Thordon Bearings Inc. signed a letter of intent (LOI) under which it will cooperate with MSR Gryfia of Poland to promote the conversion of ships to an open seawater lubricated propeller shaft Thordon bearing system from a sealed oil lubricated propeller shaft bearing system.   


DSME Returns for More Dual-Fuel Engines

5G70ME-GI (Eric Haun).jpg

MAN Diesel & Turbo received an order for four MAN B&W 5G70ME-GI engines in connection with Daewoo Shipbuilding & Marine Engineering Co.,Ltd. (DSME) agreeing a deal with the BW Group to build two LNG carriers. The technical engine specification complies with IMO Tier II


Mitsubishi: First-Ever Licensing Deal to Chinese for Marine Propellers

The signing ceremony.

Mitsubishi Heavy Industries Marine Machinery & Engine Co., Ltd. (MHI-MME), a group company of Mitsubishi Heavy Industries, Ltd. (MHI),  concluded a licensing agreement with Changzhou Zhonghai Marine Propeller Co., Ltd. (CZZH) under which MHI-MME provides CZZH the manufacturing and


First Bulk Carrier Delivered to ADM of US

Newly developed bulk carrier with MALS

  The first unit of a new bulk carrier developed by Mitsubishi Heavy Industries, Ltd. (MHI), a vessel offering superlative energy efficiency and environmental performance, was delivered today to Archer Daniels Midland Company (ADM) of the U.S


Oshima-built Grain Carrier Delivered in the US

Newly developed bulk carrier with MALS (Photo: MHI)

Today the first unit of a new bulk carrier developed by Mitsubishi Heavy Industries, Ltd. (MHI) was delivered to Archer Daniels Midland Company (ADM) of the U.S., following its completion at Oshima Shipbuilding Co., Ltd. of Nagasaki, an MHI licensing partner.


Teekay Renews Hull and Propeller Monitoring for LNG Carriers

Daniel Kane

Canada-based shipping company Teekay Corporation has renewed its contract with Propulsion Dynamics for its hull and propeller performance monitoring system CASPER Service. The Computerized Analysis of Ship PERformance (CASPER Service) from Propulsion Dynamics is a turnkey subscription service


Wärtsilä Propulsion Equipment for 2 Fishing Vessels

Lunar Fishing

  Two new 78 metre purser/trawler fishing vessels being designed and built at Karstensen Shipyard in Denmark will feature Wärtsilä's main propulsion and control equipment. The ships have been contracted by Lunar Fishing, the Scotland based fishing company and will operate in the


Cruise Newbuilds Feature Seawater Lubrication

Thordon COMPAC seawater lubricated propeller shaft bearings fitted to bronze carriers

The Viking Star, a47, 800GTcruise ship, is one of three Viking Ocean Cruises’ newbuilds to opt for Thordon COMPAC seawater lubricated propeller shaft bearings. Constructed at Fincantieri’s Marghera shipyard, the 944-passenger Viking Star is the first of three new ships equipped with


Propeller Design Software Upgraded

Image: HydroComp

HydroComp PropCad 2014 released HydroComp PropCad is software for geometric modeling of marine propellers for design and manufacture that provides automatic preparation of 2D design drawings, 3D offsets, thickness classification reports and CAD/CAM data


US Navy Aircraft Carrier Leaves Drydock

About 500 shipbuilders assisted with the undocking of the aircraft carrier USS Abraham Lincoln (CVN 72) on Monday. Lincoln was moved from a dry dock to an outfitting berth at Newport News Shipbuilding, where its refueling and complex overhaul will be completed. Photo by Ricky Thompson/HII

Newport News Shipbuilding completes drydock work for aircraft carrier USS Abraham Lincoln (CVN 72); refueling and complex overhaul With tugboats guiding it into the James River, the aircraft carrier USS Abraham Lincoln (CVN 72) was moved from one of Newport News Shipbuilding’s drydocks to


Wärtsilä’s New CPP System

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At SMM Wärtsilä introduced its latest development of large Controllable Pitch (CP) Propellers, based on the previously known E-hub type. The new Wärtsilä CP propeller system addresses the demands of medium and large size vessel owners


MAN Diesel & Turbo Bags Chinese Ferry Orders

MAN Diesel & Turbo to supply four 9L4860CR engines for the diesel-mechanical propulsion of two passenger ferries

  MAN Diesel & Turbo has secured a contract for the supply of four 9L48/60CR engines for the diesel-mechanical propulsion of two passenger ferries for Chinese shipping companies, Huadong Ferry and Dadong Ferry. The two newbuildings are currently under construction at Huanghai Shipyard in


"The Switch" Passes Bench Test

The Switch, a specialist of megawatt-class permanent magnet (PM) machines and frequency converter packages for advanced wind and marine drive trains, has successfully tested its PM shaft generator in a rigorous bench test in Vaasa. The first pair in an order of four PM shaft generators is part






 
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