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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


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.


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.


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


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


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


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.   


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


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


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


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


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


Ferus Smit Launches Arklow Cadet

Photo: Ferus Smit

Dutch shipbuilder Ferus Smit has launched its Nb. 424, MV Arklow Cadet, on June 9 at the Westerbroek yard. Bulk carrier MV Arklow Cadet is the first in a series of 10 vessels for Irish client Arklow Shipping. With a maximized hold volume of 220,000 cft and a carrying capacity over 5


Canadian Con-Ro Pair Drydocked in Gibraltar

Oceanex Sanderling  (Photo: Gibdock)

Gibdock's ro-ro and container ship repair work continues, following the drydocking of two con-ro vessels operated by Canadian shipowner, Oceanex. Oceanex provides intermodal transportation services to the Canadian Atlantic provinces of Labrador and Newfoundland. 


MAN Bags Danaos Shipping Propeller Order

Kappel propellers, Photo MAN

MAN Diesel & Turbo has won the order to supply Danaos Shipping Co. Ltd. with fixed pitch Kappel propellers, propeller boss caps with fins, and Engine Power Limitation for two container vessels – the 8,500 TEU ‘CSCL Europe’ and ‘CSCL America’.


ClassNK Updates Steel Ships Survey/Construction Guide

Classification society ClassNK has released printed versions of its 2016 Rules and Guidance for the Survey and Construction of Steel Ships.   ClassNK regularly reviews and revises its technical rules and guidance in order to ensure that they are relevant and up-to-date.  


Life Extension for World’s Oldest Icebreaker

Voima (Photo: Arctia)

A comprehensive dry docking and life extension plan has been set out for the 62-year-old Finnish icebreaker Voima, continuing its run as the world’s oldest operational icebreaker. Commissioned in 1954, Voima is part of Arctia’s icebreaker fleet and has demonstrated its reliability


AAPA, USDOT to Commemorate NM Day Jointly

AAPA President and CEO Kurt Nagle Photo AAPA

 A little-known annual American commemoration is coming up again on May 22 - National Maritime Day. It was declared by Congress in 1933 to call attention to America’s proud maritime heritage and to honor the men and women who serve and have served as U.S. merchant mariners.


Passenger Vessel Spotlight: Vision of The Fjords

Image: The Fjords

The Fjords DA, operator of seven tourist ships in the Western Norwegian fjords, has revealed the name of the latest addition to its fleet. To be christened Vision of The Fjords, the 40m long hybrid craft is designed to push the possibilities of green technology and passenger experience.  






 
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