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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


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


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


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


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


ClassNK to Issue Guidance on Composite Propellers

Classification society ClassNK announced it will release the world’s first Guidelines on Composite Propellers (Part on Manufacturing/Product Inspection) on August 31.   The strength and corrosion resistance of composite materials makes them widely used in fields such as aerospace


Thordon's Compac Ordered for 2 EcoCoasters

An artist’s impression of the VG EcoCoaster  design (Photo: Thordon Bearings)

Thordon Bearings’ Swedish distributor, Duwel Sweden, has signed a contract with Caterpillar Propulsion for the supply and installation of Thordon COMPAC seawater lubricated propeller shaft bearing systems to the two general cargo ships Dutch shipyard Royal Bodewes is building for


Diesel-electric Propulsion for 4 Semi-sub Ships

CSBC Corporation Taiwan has chosen Siemens to supply diesel-electric propulsion systems and other accessories for four 65,000-ton semi-submersible deck cargo vessels (SSDCVs). The country’s largest shipyard is building the vessels for a customer in Singapore.  


New Towboat Honors Structural Engineer

Rex Dobson breaking the traditional bottle over his namesake (Photo: New Generation Shipbuilding)

Joe Gregory, owner of New Generation Shipbulding of Houma, La., reports that his firm’s latest delivery will join the La Porte Texas-based Martin Marine fleet of 29 inland push boats and 54 inland marine tank barges. Martin also operates four offshore tug/barge units.  


One More Z-Drive on the Job for EMS

Photo courtesy of Cummins

Enterprise Mariner Services, LLC (EMS) operates with the motto “Safe, Efficient, Reliable”. With the addition of their eighth Z-drive towboat and the fourth from Sneed Shipbuilding, the goal of maintaining that excellence is ever more assured.  


Van Oord Orders Two New Dredgers

Graphical representation of the new hopper-suction dredger (courtesy Van Oord)

Rotterdam-based dredging and marine contractor Van Oord has recently ordered two trailing-suction hopper dredgers as part of its continuous investment program.   The vessels will be constructed at CNN LaNaval Shipyard in Sestao, Spain with delivery dates scheduled for 2017.  


Strategic Marine: Stock Program Full Power Ahead

Photo: Strategic Marine

Strategic Marine confirmed its stock program of personnel transport vessels is market-ready.  “Our stock program currently incorporates two class leading designs which are in high demand through its wide deployment capabilities and operating envelope,” said Reece Newbold


Strategic Marine’s Stock Program Full Power Ahead

StratCat26 CTV

  Strategic Marine, the specialist shipbuilder and fabricator, has confirmed its stock program of personnel transport vessels is market-ready. “Our stock program currently incorporates two class leading designs which are in high demand through its wide deployment capabilities and


Thordon Bearings Secures AK Ferry Contract

A Thordon COMPAC water lubricated propeller shaft bearing (image: Thordon)

Thordon Bearings has received an order to supply its COMPAC system to two Alaska Ferry newbuilds under construction at the Vigor Industrial shipyard in Ketchikan, Alaska. The Canada-based company, a supplier of seawater-lubricated propeller shaft bearings


Rolls-Royce Power Package for USS Zumwalt

Photo courtesy of Rolls-Royce

Rolls-Royce announced delivery of the twin fixed pitch propellers to Bath Iron Works for installation on the U.S. Navy’s most modern surface combatant, the future USS Zumwalt, the first ship of the DDG 1000 multi-mission destroyer class.


Thrustmaster Equips Z-Drives with Mechanical Fuses

The USS Cairo is equipped with two (2) 750 HP Z-Drives model TH750MZ (Image: Thrustmaster)

Thrustmaster has been building brown water propulsion equipment for more than 30 years. Now the company’s American-made Z-Drive thrusters for inland waterway towboats are the first thruster in the industry to include a built-in mechanical fuse or quick release coupling.  


Incat Crowther Designs New Ferries for Singapore

Image: Incat Crowther

A new class of 33-meter catamaran passenger ferries has been designed by Incat Crowther for Majestic Ferries in Singapore, to operate between Singapore and Batam. With four of the vessels already under construction at PT Cahaya Samudra Shipyard in Indonesia, the design targets increased speed


DNV-GL Approves Kongsberg Engine Room Simulators

Photo courtesy of Kongsberg Maritime

Kongsberg Maritime has received DNV-GL certification for three of its latest engine room simulator models designed to provide in-depth training on the K-Sim Engine simulator platform. The DNV GL-ST-033:2014-08 Maritime Simulator Systems certification


Research Vessel Concept a First for Voith

Photo: Voith Turbo

The new fisheries research vessel of the Shanghai Ocean University will be a first for Voith in several respects.   It is the first fisheries research vessel world-wide to use the proven Voith Schneider Propeller (VSP) propulsion concept


Hapag-Lloyd's New Noses Lower Emissions

Bulbous bow of the Hapag-Lloyd training ship Chicago Express (Photo: Hapag-Lloyd)

Hamburg based shipping company Hapag-Lloyd plans for 24 of the largest containerships in its fleet to get new bulbous bows by 2016, with some of the vessels also pegged to be fitted with optimized propellers, ultimately enabling lower fuel consumption coupled with fewer emissions.  






 
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