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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


WWI U-Boat Propeller Returned to German Navy

A handover ceremony took place on the German Naval vessel Karlsruhe in the Portsmouth Naval Base (Photo: MCA)

A brass propeller from the first U-Boat to be sunk a century ago has been given back to the country it belongs to, the U.K. Maritime and Coastguard Agency (MCA) reported.   The propeller from the German World War I submarine U-8 was handed over by the MCA to members of the current Navy


Voith Schneider Propellers for New Irish Ferry

The new MV Strangford again relies on the VSP propulsion concept (Photo: Voith)

Northern Ireland relies on Voith Schneider propellers for new double-ended ferry on Strangford Lough   The double-ended ferry MV Strangford has been in operation for more than 45 years, connecting the two towns of Portaferry and Strangford in the northern part of the Irish Sea


Svitzer Orders Pair of Damen Tugboats

Photos courtesy of  Damen

Svitzerhas ordered two more Damen ASD 3212 tugs with 80 tons bollard pull performance for its escort and towing operations on the Thames and Felixstowe. They are being built at Damen’s ong Cam Shipyard in Vietnam and will be delivered to Svitzer UK in October 2015.


Jotun to Update Performance Guarantees

The 17 National Standardization Bodies represented on ISO’s Marine Environment Protection Sub-committee (ISO-TC8-SC2) has voted in favor of circulating ISO 19030 parts 1 and 2 as Draft International Standards. In anticipation of final approval of the standard expected next year


Damen Performs Cruise Ship Maintenance

Photo: Damen

Magellan completes maintenance stop at Damen Shiprepair Amsterdam   The 46,052 GRT cruise ship Magellan has recently completed a five-week scheduled maintenance stopover at Damen Shiprepair Amsterdam. For two of the weeks, the 222-meter vessel was positioned in the yard’s 250-meter no


Optimizing Efficiency Requires Measurement of True Output

Cummins Binsfield.jpg

Binsfield Engineering’s TorqueTrak telemetry instruments measure torque, RPM’s and power data. Binsfeld Engineering specializes in transmitting sensor signals from rotating machinery and has been designing wireless, noncontact data transmission systems since 1974


Thordon Reports Big Orders from Chinese Shipyards

Photo: Thordon Bearings

Thordon Bearings has received an order for a total of 20 seawater-lubricated COMPAC Propeller Shaft Bearing Systems for Chinese shipyards, marking the Canadian company’s most significant order for commercial vessels. Thordon Bearings


DNV GL, Jotun Cooperate on Hull Performance

From left to right: Dr. Torsten Büssow, DNV GL’s Head of Fleet Performance Management; Albrecht Grell, Director of the Maritime Advisory division at DNV GL; Geir Boe, Vice President Marine Coatings at Jotun; and Stein Kjølberg, Global Sales Director, Hull Performance Solutions at Jotun.

DNV GL and the Norwegian paint manufacturer Jotun signed a cooperation agreement to work on improving hull performance at Nor-Shipping today. The project will bring together two performance management services, Jotun’s Hull Performance Solution and DNV GL’s ECO Insight solution


8th Incat Crowther Vessel Delivered to Tanzania

Kilimanjaro V Delivered to Tanzanian Co

  Incat Crowther delivered Kilimanjaro V, the eighth Incat Crowther designed vessel for the Tanzania-based operator Azam Marine. Built by Richardson Devine Marine of Tasmania, Australia, the 39m Catamaran Passenger Ferry is a rugged and efficient catamaran


Thordon Bearings Bags Alaska Ferry Contract

Photo: Thordon Bearings

Thordon Bearings has received an order to supply its COMPAC system to two Alaska Ferry newbuilds under construction at the Vigor Industrial shipyard in Ketchikan, Alaska. The Canada-based company, a supplier of seawater-lubricated propeller shaft bearings


Upgrade Packages Ordered for Odfjell Tankers

MT Bow Firda, delivered in 2003, was the last and most advanced chemical tanker in Odfjell’s 37,500 dwt Kværner Class. It is powered by an MAN B&W 7S50ME-C main engine (the world’s first) driving a MAN Alpha VBS1560 propell

  Fuel-saving upgrade package with Kappel technology to optimise propulsion efficiency and lower fuel consumption of 11 vessels MAN Diesel & Turbo’s Propeller & Aft Ship organisation has won an order to retrofit and upgrade a series of 11 × 37


Fuel-saving Upgrades for 11 Odfjell Tankers

M/T Bow Firda, delivered in 2003, was the last and most advanced chemical tanker in Odfjell’s 37,500 dwt Kværner Class. It is powered by an MAN B&W 7S50ME-C main engine driving a MAN Alpha VBS1560 propeller and shaft alternator (Photo: MAN Diesel & Turbo)

Upgrade packages ordered for Odfjell Tankers fuel-saving upgrade package with Kappel technology to optimize propulsion efficiency and lower fuel consumption of 11 vessels   MAN Diesel & Turbo’s Propeller & Aft Ship organization has won an order to retrofit and upgrade a series


Custom Yachts Feature Hybrid Battery Propulsion

Image courtesy of Knud E. Hansen

A pair of custom motor yachts is packed with state-of-the-art features and technologies, most notable among them: hybrid propulsion systems.   The two yachts may look different, but they are in fact the same design, with an exterior customized according to the owner’s preferences


Aqueos Takes Delivery DSV for Liveboating

Photo: Aqueos Corporation

Aqueos Corporation, a subsea services provider for the offshore oil and gas sectors of the Gulf of Mexico and the Pacific West Coast, announced the delivery of SPLASH, a Special Purpose Liveboat and Survey Hull to specifically address safety concerns with traditional methods of Liveboating.


Dive Operator Sentenced after Propeller Death

A New Zealand dive operator and skipper have been sentenced for the February 2014 death of a diver struck by a propeller while on a trip to the Poor Knights Islands, Maritime New Zealand announced.   Whangarei diving company The Dive Spot Limited has been fined $50






 
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