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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

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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


LNG Bulker Cements Thordon's Green Future

JT Cements LNG-fuelled cement carried Greenland undergoing sea trials (Photo: Thordon Bearings)

Sea trials aboard Greenland, the world’s first LNG-fuelled short-sea dry bulk vessel, have validated the performance of Thordon Bearings COMPAC propeller shaft solution, indicating that seawater-lubricated bearing systems are applicable to all ship types and are definitely here to stay.


Hempel’s Dynamic Brings Saving for Lemissoler

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Global shipmanagement company, Lemissoler Navigation, via its affiliated and managed company Frontmarine Co. Ltd, has achieved significant fuel savings from coating its newbuild 58,500dwt supramax bulk carriers with Hempel’s Dynamic antifouling product.


Hempel Coatings for Lemissoler Newbuilds

Global shipmanagement company, Lemissoler Navigation, via its affiliated and managed company Frontmarine Co. Ltd, has coated four of its eight newbuild 58,500 dwt supramax bulk carriers with Hempel’s Dynamic antifouling product, and based on its performance


The Next Generation of Hull Performance Management

Hull performance monitoring solutions can offer significant fuel savings potential, a fact that is prompting growing interest from the maritime industry. To spur development and increase awareness of this exciting field, DNV GL and paint manufacturer Jotun have created the Hull Performance &


Blount Boats to Build Chicago Tour Boat

Image: Blount Boats

Blount Boats, Inc. has been contracted to build a 100- x 35-foot steel passenger ferry boat for Shoreline Sightseeing Co., Chicago, Ill.   The proposed 300-plus passenger, Sub-Chapter K vessel was designed by Seacraft Design, LLC, Sturgeon Bay, Wisc


Conflicting Objectives in Ship Design

Figure 1: Detailed geometry for STAR-CCM+ simulation of ship self-propulsion

Enviro, Safety Regulations Conspire to Complicate  the Marine Classification Business “ABS is first and foremost a safety company,” says Richard Korpus, “but safety can arise on many different fronts. It can refer to the safety of a high-valued asset


Cruise Ship Marco Polo Leaves Damen Shiprepair

Photo: DSV

Damen Shiprepair Vlissingen (DSV), part of Damen Shiprepair & Conversion (DSC), has said farewell to Marco Polo, the 800 passenger cruise ship owned by Global Maritime and operated by Cruise & Maritime Voyages.   Launched in 1964 as the Aleksandr Pushkin


Trailing Suction Hopper Dredger Drydocked at Kooiman

The Reimerswaal in the propeller repair dry dock of Scheepswerf Gebr. Kooiman BV (Photo: Kooiman)

The 6,000-cubic-meter trailing suction hopper dredger Reimerswaal was moored for regular maintenance at the end of December 2015, alongside the jetty of Scheepswerf Gebr. Kooiman BV in Zwijndrecht.   The Reimerswaal, having an overall length over of 130


New Tug Delivered for Italtugs

Photo: Sanmar

The delivery of tug Civitavecchia to the Italian tugboat operator Italtugs for its operation at a Sicilian oil terminal represents another milestone in the tchnical cooperation between Sanmar Shipyards in Turkey and the Canadian naval architects, Robert Allan Limited.


Two Incat Crowther Catamaran Ferries for Auckland

Incat Crowther

Incat Crowther reports that construction has commenced at Q-West in Wanganui, New Zealand, on a pair of additional 34m catamaran passenger ferries for Fullers Group Ltd. The new boats will be sister ships to Te Kotuku which was also built at Q-West and delivered in 2014.  


Wartsila India Signs Pact with CSL

Pic: Cochin Shipyard Limited

 Wartsila India, the Indian arm of Finland-based Wartsila Corporation, has signed a Memorandum of Understanding (MoU) with Cochin Shipyard Ltd (CSL) for setting up a containerised self-sufficient workshop.   As per the MOU, Wartsila plans to locate a containerised self-sufficient


Damen Takes on Six Viking River Cruises Vessel Jobs

Viking River Cruises (2).jpg

Damen Shiprepair Amsterdam (DSAm) reports that it is currently working on a modification and maintenance contract for six inland cruise vessels owned by Viking River Cruises. With this winter service complete, all six vessels – known as longships – will be ready for the coming river


SCHOTTEL Expands Repair Capacity

Photo: SCHOTTEL

The newly extended repair facilities at SCHOTTEL’s German headquarters in Spay are now operational. The space was previously used solely for manufacturing new drives, but now the halls offer 2,200 square meters for the repair of SCHOTTEL propulsion systems


Creating Patterns with PropCad Premium

Pattern Corrections is used to expand and thicken propeller designs to create machining models and casting patterns. Individual control is provided for separate blade parameters. (Image: HydroComp)

The new Pattern Corrections utility allows users to quickly create machining models, casting patterns, and molds DIRECTLY from PropCad   HydroComp announced its PropCad software for the geometric modeling of marine propellers has receieved an upgrade


Inland Vessel Profile: USACE’s Dan Reeves

M/V Dan Reeves (Photo by Richard Dollison)

The newly built M/V Dan Reeves was commissioned in January of 2016 for the United States Army Corps of Engineers (USACE) Little Rock District. Built by Horizon Shipbuilding, Inc., Bayou La Batre, Ala., overseen by the USACE Marine Design






 
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