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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


Amaroo Cruises Takes Catamaran Delivery

Photo: Imagery Motion Works

Incat Crowther today announced the launch of Amaroo, a 24-meter Catamaran Whale Watching vessel for Amaroo Cruises of Forster, New South Wales, who recently celebrated 35 years in operation. Built by Aluminium Marine in Queensland, Amaroo is the third Incat Crowther-designed vessel for the operator


Two Additional Voith Tugs For Alexandria

Photo courtesy of Voith

The Alexandria port authority has placed an order for two new tugs with the Egyptian Timsah Shipbuilding Company. Each vessel will be equipped with two VSP 28R5/234-2 Voith Schneider Propellers for a power of 3840kW.   Two virtually identical Voith Water Tractors (VWT) were put into


DMC Builds the Smallest Ever Nozzle

Photo courtesy of Damen

Damen Marine Components (DMC), part of Damen Shipyards Group, announced it has smashed its propeller nozzle world record by 33 percent downwards. This downsizing to an inside diameter of 665 millimeters only - from the previous 1,000 mm ‘entry level model’ - marks a new milestone for


Wärtsilä's JV with CSSC to Expands Engines Range

  Wärtsilä and China State Shipbuilding Corporation (CSSC) have signed an agreement to establish a joint venture for manufacturing medium and large bore medium speed diesel and dual-fuel engines. The CSSC Wärtsilä Engine (Shanghai) Co


BAE Systems Gets USNS Wally Schirra Overhaul Contract

USNS Wally Schirra: Photo MSC

U.S. Department of Defense announces the award of a Navy US$10,354,523 contract to BAE Systems San Francisco Ship Repair, San Francisco, California, for work on the USNS  Wally Schirra (T-AKE 8). The firm-fixed-price contract is for a 58-calendar day regular overhaul and dry docking


GD NASSCO Awarded MLP4 Contract Modification

MLP 4 rendering courtesy of USN

US Department of Defense inform that General Dynamics National Steel and Shipbuilding Co., San Diego, California, is being awarded a not-to-exceed US$64,056,766 modification under a previously awarded contract (N00024-09-C-2229) to procure advance material for the Mobile Landing Platform 4 (MLP4)


SS United States’ Propeller May be Scrapped

Once one of the worlds greatest ships, the SS United States has fallen into a state of disrepair (Photo courtesy of the SS United States Conservancy)

Once a top secret, the 60,000 pound propeller from the nation’s flagship may be scrapped to raise money for the preservation of the historic vessel. On board America’s Flagship the SS United States on Tuesday, June 17, 2014 from 11-11:30 a.m


Caterpillar to Unveil Twin Fin Propulsion System

The Cat Propulsion Twin Fin System will debut at the 2014 ITS Hamburg Conference and Exhibition, June 16-20. (Image courtesy of Caterpillar Marine)

Caterpillar Marine will launch the Cat Propulsion Twin Fin System at the 2014 ITS Hamburg Conference and Exhibition, June 16-20. The Cat Propulsion Twin Fin System is a new diesel-electric solution that saves on fuel and emissions, while improving overall vessel performance, Caterpillar said


Kappel Propellers for Newbuild Bulk Carriers

Image courtesy of MAN Alpha Kappel

Lemissoler Navigation Co. Ltd., the Cyprus-based owner and operator, has selected the MAN Alpha Kappel propeller design for a new series of 8 × 58,500 DWT bulk carriers planned for delivery during 2015 and 2016. The 6.8-meter, slow-running


Cat Power Solution for Teekay Offshore

Image: Caterpillar Marine

Caterpillar Marine announced that Cat power and propulsion offerings have been selected to provide complete propulsion solutions for four ocean-going towing vessels designed by Ulstein Design and Solutions. Each vessel will have four 9 M 32 C propulsion engines, rated at 4,500 bkW at 600 rpm


Dynaligner Aims to Eliminate Shaft Misalignment

Dynaligner

More than 20 percent of all machinery claims, as well as catastrophic failure, off-hire and repair costs are caused by misalignment – the cause of almost all propulsion train damages Sweden’s Dynaligner AB said, adding that the problem is getting worse as modern ship design pushes the


MAN Propulsion System for New GEFO Tanker

MAN Diesel & Turbo has supplied a complete propulsion system comprising a 7L32/44CR engine, Renk gears and an Alpha adjustable CP propeller for an ultra-modern chemicals tanker operated by GEFO Gesellschaft für Öltransporte mbH


Wärtsilä Environmental Seal Systems First to Gain Recognition

Wärtsilä supports the underwater repair and maintenance of a broad portfolio of seal products. Performing critical maintenance to stern tube seals and other equipment while keeping the vessel in service enables uninterrupte

  Wärtsilä has received an important service level recognition for its Wärtsilä Airguard and Wärtsilä Oceanguard propeller shaft sealing systems from Lloyd's Register. The recognition of Lloyd's Register, a marine classification society


First of 12 UT4000 Crewboats Delivered

Baru Gorgona (Photo courtesy of Incat Crowther)

Incat Crowther announced the launch of Baru Gorgona, the first of a new series of 12 UT4000 Monohull Fast Supply Vessels to be built by ETP Engenharia Ltda. Additionally, Incat Crowther has signed a contract to supply the design of six further UT4000 FSVs to be built at Arpoador Engenharia Ltda


High-Tech Fincantieri Ferry For Quebec

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  Fincantieri shipyard in Castellammare di Stabia (Naples) saw the launching today of the "F.-A.-Gauthier", the latest generation ferry that Fincantieri is building for Société des traversiers du Québec (STQ)






 
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