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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


Polar Cruise Ships to Feature Rolls-Royce Green Tech

Image: Rolls-Royce

Norwegian explorer cruise line Hurtigruten is to build two new expedition ships using a new and environmentally sustainable hybrid technology from Rolls-Royce making fully electric propulsion on a passenger ship possible.   The Rolls-Royce designed MS Roald Amundsen and MS Fridtjof Nansen


Jotun:ISO 19030 standard can make $30 bln impact on the industry

Geir Axel Oftedahl, Jotuns Business Development Director - HPS Photo Jotun

The International Organization for Standardization (ISO) has now published the long-awaited ISO 19030, a new standard conceived to measure changes in ship-specific hull and propeller performance. According to Jotun, which has led the industry in the standard’s development


ROBA-DS Shaft Couplings Certified by DNV GL for Offshore

Image source shutterstockam70

The compact and high performance ROBA-DS disk pack couplings by mayr power transmission have been certified by DNV GL. They ensure maximum possible operational and functional safety for users on the high seas. Whether in the drives of ship propellers


Wärtsilä EnergoProFin for CPP, FPP

Wärtsilä EnergoProFin energy saving solution increases propeller efficiency and creates fuel savings of up to five percent. Photo Wartsila

Wärtsilä EnergoProFin is a state-of-the-art energy saving solution that increases propeller efficiency and creates fuel savings of up to five percent. The solution is now available for both controllable pitch propellers (CPP) as well as fixed pitch propellers (FPP)


Rolls-Royce Wins Deal to Power USN TAO

Rolls-Royce won a contract to supply diesel generators, propellers and shaft lines for the US Navy’s new fleet replenishment oiler ships, the John Lewis Class. Planned to total 17 ships, the new John Lewis class (previously known as TAO – X) will increase the US Navy’s capability


Robert Alan Designed ATB Tugs for ITB Marine

ITB Marine Group Ltd. (ITB) is currently well into construction of the first of two, twin Z-drive, ATB pusher tugs photo Robert Alan

The ITB Marine Group Ltd. (ITB) is currently well into construction of the first of two, twin Z-drive, ATB pusher tugs for service on the West Coast of North America. The tugs are being built at their Annacis Island Shipyard near Vancouver. The tugs will be connected by an articulating pin system


Overcoming the Propeller Supply Bottleneck

Image: Hydrocomp

Hydrocomp’s ProCad facilitates in-house Process Control of Propeller Design and Manufacture.   Maritime Tactical Systems Inc. (MARTAC) is a Florida-based company building next-generation unmanned vessels for military applications


Ferus Smit Launches Arklow Cape

Photo: Simon Marrink

Shipbuilder Ferus Smit has launched new build M.V. Arklow Cape on Friday, October 21 at its Westerbroek shipyard in the Netherlands   Arklow Cape (Nb. 425) is the second vessel in a series of 10 that will be delivered to Irish owner Arklow Shipping.  


Incat Crowther Designed Ferry for Seychelles

Robust and Efficient Catamaran Ferry for Seychelles Photo Incat Crowther

Incat Crowther has designed a new catamaran ferry for Cat Cocos of the Seychelles. To be built by Richardson Devine Marine, the 292-passenger, 30m vessel will capitalize on the experience of the operation of the Incat Crowther-designed Isle of Praslin (delivered 2006) and Isle of La Digue


New Tall Ship to Feature Hybrid Propulsion System

Image: Corvus Energy

The San Francisco Bay Area nonprofit, Educational Tall Ship Program has ordered a 100kWh energy storage system (ESS) from Corvus Energy as a part of a hybrid electric propulsion system on board its new, 132-foot Brigantine tall ship, the Matthew Turner


Ship Design: Monitoring and Analysis for Emissions Reduction

Example of vessel whereby the amount of cargo carried is difficult to quantify in single MRV indicator. (Picture courtesy of Spliethoff)

Designing for ship performance: monitoring and analysis for CO2 emissions reduction   In April 2015, the European Union adopted a mandatory Monitoring, Reporting and Verification (MRV) regulation for CO2 emissions resulting from maritime transport


SNAME Honors Thordon's Sandy Thomson

SNAME honored Thordons Sandy Thomson. (Photo: Thordon)

At the opening session of the 2016 SNAME Maritime Convention in Bellevue, Washington, George A. (Sandy) Thomson was elected a Fellow of the Society of Naval Architects and Marine Engineers (SNAME).    According to the Society, the grade of Fellow is accorded exclusively to


MAN Diesel & Turbo Sells First HyProp ECO System

HyProp ECO plant (Image: MAN Diesel & Turbo)

MAN Diesel & Turbo announced that it has secured an order for a complete propulsion package for a chemical tanker. The order is significant in that it marks a “world-first”: the package is the first to feature a full HyProp ECO fuel-saving, hybrid propulsion system with PTO/PTH.


Retrofitting Containerships - Where The Savings Are

Seaspan project: Independent model tests confirmed energy savings just shy of 20 per cent for the 13.100 TEU vessel. Photo: DNV GL

 Despite the low fuel prices, energy efficiency is a key differentiator for shipping companies competing for cargo.   The Canada-based owner Seaspan has worked with DNV GL on a series of projects aimed at investigating possible efficiency gains through retrofits


Bruntons to Debut CPP System at METS

Image: Bruntons Propellers

A new controllable pitch propeller (CPP) system from Bruntons Propellers Ltd. will make its public debut at this year’s METS exhibition in Amsterdam, November 15-17.   Bruntons said it has spent several years developing a CPP propeller and its associated equipment which will solve






 
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