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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


Blount Boats Delivers Chicago Tour Boat

M/V Skyview (Photo: Blount Boats)

Blount Boats of Warren, R.I. has delivered the M/V Skyview to Shoreline Sightseeing, marking the builder’s second delivery for the Chicago sightseeing company.   With a LOA of 100 feet and maximum beam of 35 feet, the steel Subchapter K passenger vessel designed by Seacraft Design


Damen Optima Nozzle: A Boon for Inland Shippers

Flap rudder lowres Photo Damen

Damen Optima Nozzle is a big advantage for the North American inland shipping sector. The propeller nozzle developed and manufactured by Damen Shipyards Group's subsidiary Damen Marine Components (DMC) is suited for a wide spectrum of maritime uses and yields the most benefits for inland shipping


MN100: Voith Turbo

(Image: Voith Turbo)

The Company: Voith Turbo specializes in the design, manufacture and servicing of high performance driveline equipment. From drive components to electronic drive systems, technology from Voith Turbo impacts a wide variety of markets, including ship technology


Pods Versus Water Lubricated Props

Image: Thordon Bearings

Thordon Bearings has called on the marine industry to investigate the characteristics of both conventional seawater-lubricated propeller shaft systems and podded propulsion arrangements in order to provide shipowners with a better understanding of the two very different propulsion configurations.


Catamaran Ferry Delivered to Majestic Ferries

HSC Catamaran Passenger Ferry Majestic 7 (Image: Incat Crowther)

The recently launched Majestic 7 is the first of four HSC catamaran passenger ferries designed by Incat Crowther to be delivered to Majestic Ferries in Singapore. Majestic 7, part of a multiple-vessel order which has been further expanded to include a pair of larger capacity vessels due to be


Volvo Penta Debuts New Diesel Engine and IPS

The new D8 and IPS15 package. (Photo: Volvo Penta)

Volvo Penta's concerted push into the commercial marine market continues with the introduction of the D8 diesel engine and the new IPS15 propulsion system   Ever since the global financial meltdown of 2008 briefly crippled the world leisure boat market


Retractable Flanking Rudders for Imperial’s Push Boats

Photo: Damen

Imperial Shipping has chosen Van der Velden Marine Systems retractable flanking rudder systems for its push boats.   The retractable flanking rudder system is an in-house innovation of Van der Velden Marine Systems (VDVMS). The system brings new efficiency to the inland shipping industry


Rapido Gee: 42m Utility Vessel Delivered

Photo: Incat Crowther

Rapido Gee, a 42m steel monohull utility vessel, has been delivered and is currently in transit to the Middle East. The vessel will be operated by Rashied Marine Services in the service of offshore platforms.   Designed by Incat Crowther and built by Strategic Marine


Jotun: ISO Hull Performance Standard Final Stage

Photo:  Jotun

 The ISO 19030 is finally nearing publication, in a move that has the potential to save the shipping industry as much as USD 30 billion in annual fuel costs.   It’s taken 12,000 hours of development work, involving 53 expert stakeholders, across more than three years


Quick Propeller Repair Prevents Drydocking

One of the propeller blades was missing parts of its tip. (Photo: Hydrex)

Recently a team of Hydrex diver/technicians performed a propeller blade cropping on a 190-meter container bulker berthed in Hamburg. Two parts of the tip of one of the four propeller blades were damaged and needed to be cropped to restore the propeller’s efficiency.   


First VectRA 3000 Tug Delivered

(Photo: Sanmar)

Sanmar’s first VSP (Voith Schneider Propeller) tug, of the new VectRA 3000 series, named Arie A has been constructed for Italian operator Tripmare Spa of Trieste. The vessel has been delivered by a Redwise crew to Ashdod Port, located some 40 kilometers south of Tel Aviv where it will operate


New Ferry MV Woods Hole Delivered

M/V Woods Hole during sea trials (Photo: Brian King)

The newly built ferry M/V Woods Hole has been delivered to serve Woods Hole, Martha’s Vineyard and Nantucket.   Built by Conrad Industries of Morgan City, La., the Elliott Bay Design Group (EBDG) designed ferry is the naval architects’ second design for The Steamship Authority


AkzoNobel Acheives ISO 19030 Compliance

AkzoNobel’s Marine Coatings business has outlined for the first time its full compliance with ISO 19030, the new standard for measuring hull and propeller performance. The requirements for ISO 19030 have been incorporated into AkzoNobel’s recommendations for hull performance monitoring


ATB Design Comes of Age

Kim M. Bouchard / B. No. 270 (Credit: Guarino & Cox)

The emerging trend of marrying the design of an articulated tug and barge (ATB) to a particular propulsion system to maximize efficiencies of that system has, of late, been taking hold in workboat markets. For example, one recent project involving a dynamic partnership between Bouchard


Controllable Pitch Propeller with Water-based Hydraulic System

Presentation of the DNV GL certificate by Dr. Olaf Richter (right) in the presence of his inspector, Dieter Ekat (2nd from left) who supported the test series, to Piening boss Mathias Pein (2nd from right) and his designer, Pierre Adam (left). (Phjoto: Otto Piening GmbH)

Otto Piening GmbH, a member company of the DEUTSCHE YACHTEN working group, is venturing for the first time into the development of controllable pitch propellers that can be operated using a water-based hydraulic system in place of oil.  






 
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