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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.


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


Wärtsilä' Starts Prop Production in China

The joint venture company set up by Wärtsilä and CSSC (China State Shipbuilding Corporation) in China to design, manufacture and deliver Fixed Pitch Propeller (FPP) packages has officially started operating at the beginning of June 2004. The new company, called Wärtsilä-CME Zhenjiang Propeller Co. Ltd, is 55%-owned by Wärtsilä and 45%-owned by Zhenjiang CME Co. Ltd (CME), the latter being a wholly owned subsidiary of the CSSC.


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


High-Tech Fishing Vessel Delivered with MAN Propulsion

Fishing vessel Herøyhav: Photo courtesy of MAN

Norwegian company Herøyhav AS has taken delivery of a 69.95-m trawler/purse seiner from Karstensens Shipyard, Denmark, equipped with a propulsion package supplied comprising a MAN 9L27/38 engine and a two-speed reduction gear that drives a MAN Alpha 4,200 mm diam. ducted propeller


Reduce Fuel Bills without Going to Drydock

Photo: Hydrex

Propeller buffing is a new technique that aims to keep propellers in optimum condition. The process is not conventional propeller polishing, but a service developed and delivered only by Hydrex. Routine propeller buffing can save 5% from the fuel bill, Hydrex said


EBDG-designed aluminum ferry to be Constructed

Elliott Bay Design Group has designed a  steel hull, aluminum superstructure vessel which will be built  by Nichols Bros Boat Builders for Wahkiakum County.  The 115  ft. x 47 ft. 6 in 23-Car, 100 passenger ferry, named the M/V 


UZMAR’s High-tech Tug Returns from Sea Trials

KOC Musaned-2 (Photo courtesy Uzmar)

The innovative, multipurpose, conventional propeller built, 20.4m in length overall, equipped with various machinery and systems that have never designed or build before, Line Handling Tug returns to UZMAR’s Izmit Shipyard Port on April 5, 2014, after the first stage of sea trials


Ship Design & Engineering: Japan's MHI & Denmark's OMT Collaborate

Image photo CCL

Mitsubishi Heavy Industries, Ltd. (MHI) has concluded an agreement with Odense Maritime Technology A/S (OMT) of Denmark, a provider of ship design services, to collaborate in expanding their licensing business. Under the newly agreed collaborative arrangement


MHI, OMT Enter Shipbuilding Collaboration

Mitsubishi Heavy Industries, Ltd. (MHI) has entered into an agreement with Odense Maritime Technology A/S (OMT) of Denmark, a provider of ship design services, on collaboration in ship engineering business. The companies said they plan to combine abundant track records in shipbuilding business to


HydroComp Celebrates 30 Years

HydroComp, Inc. began as a business venture in 1984 to meet the specific needs of naval architects and shipbuilders in the area of resistance and power predictions. Thirty years later, HydroComp has grown into a multifaceted corporation with clients from design to construction to academia in more


New Wärtsilä Propeller Speeds Up Australian FPSO

An FPSO vessel: Image CCL2

Wärtsilä say that the technical design and installation of a new fixed pitch propeller (FPP)  for the floating production storage and offloading vessel (FPSO) Ngujima-Yin has been successfully completed. The FPSO is operated by Woodside Energy Ltd


Bulletproof Crewboats Delivered in Nigeria

Photo: Incat Crowther

Incat Crowther is pleased to announce that Veecraft Marine has delivered a pair of 20m Monohull Crewboats and signed a contract to build a 30m Wave Piercing Catamaran Crew Boat. Hot on the heels of delivering Magen Defender and Masud Defender


First of 10 Utility Vessels Delivered

Photo: Incat Crowther

Incat Crowther announced the first deliveries of a 10-boat order for 42m Infield Utility Vessels to Brunei’s PTAS Marine. Developed in conjunction with builder Strategic Marine, the project called upon Incat Crowther’s track record in steel crew boats to meet strict performance criteria


SS United States: Leading Lady to Damsel in Distress

This is now ... United States seen from S. Christopher Columbus Blvd., Philadelphia.

Once queen of the express liners, and the fastest, safest and biggest passenger liner in history, the SS United States today quietly awaits rescue from a pending cruise to the scrapyard.  The Big Ship the Big U, the one that didn’t sink. The S.S


New Jack-up Vessel Propelled by SCHOTTEL

Photo: HOCHTIEF

Since December 2013 the fleet of HOCHTIEF has a new member. The offshore jack-up vessel VIDAR was developed especially for construction and servicing of offshore wind farms as well as offshore oil and gas plants. The propulsion system consists of four SCHOTTEL Combi Drives electric azimuth


DNV Introduce Vessel General Permit Enviro-Oil Advisory Service

Photo courtesy of USCG

Classification society and consultancy DNV GL inform it has introduced the "Environmentally Acceptable Lubricants" (EAL) Report Service to help ship operators to comply with the new rules set out for the US Vessel General Permit (VGP) without the need for extensive outlays


New Propeller Optimization Process Can Analyze 10,000 Designs a Day

Propellors1 WEB.jpg

A newly developed propeller optimizer makes it much faster to identify propeller-hull reactions and reach design decisions. In the EU project STREAMLINE the fuel efficiency of a chemical tanker was improved by optimizing the hull form and propeller


VULKAN Offers Special Coupling for Offshore Drives

Image: VULKAN

The focus of this year's product and performance presentation by VULKAN Couplings at the Sea Japan in Tokyo are the specially integrated marine drive solutions for offshore ships. The coupling manufacturer based in Herne, Germany, has been supplying in particular the growing Asian and


 
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