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
Propeller in the new factory WÃ¤rtsilÃ¤'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 WÃ¤rtsilÃ¤'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 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 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.
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.
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
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
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
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
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
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
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
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
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.
Vision of The Fjords, a futuristic carbon fiber tourist vessel operated by The Fjords DA, has won the Ship of the Year 2016 accolade at SMM in Hamburg. The 40-meter-long, 399-passenger-capacity hybrid craft, which was completed by Brødrene Aa this summer
Wärtsilä has been awarded a contract covering four newbuild tanker vessels. The ships are to be built at the Avic Dingheng shipyard in China, on behalf of three Swedish owners; Furetank (two vessels), Älvtank, and Thun Tankers, a fully owned subsidiary of Thunbolagen
Just six years after its introduction, MAN Diesel & Turbo has confirmed an order for the 1,500th G-type engine. Greek ship operator, Almi Tankers, will take delivery of the ultra-long-stroke 7G80ME-C9 type as prime movers for the two 317
Thordon Bearings’ US West Coast Distributor, Pacific Marine Equipment has successfully completed the installation of a pair of TG100 mechanical propeller shaft seals to Hornblower Cruises & Events’ 1000-passenger capacity twin screw flagship, Inspiration Hornblower.
Rolls-Royce has announced a new deal to provide propulsion and deck machinery to five cruise ships being built by Fincantieri at their Monfalcone and Ancona Shipyards in Italy. The firm orders are to supply a Promas system, deck machinery and steering gear to two vessels being built
The largest container vessels are designed for the greatest possible efficiency – maximum intake, minimum fuel consumption. Their smaller cousins, however, have not received the same level of attention – but this is beginning to change, says Jai Oh Sun, Engineer / Pre-Contract
Anthropogenic (manmade) sound is creating havoc among marine mammals and other aquatic species. These creatures have very sensitive hearing, which they rely on to find food and mates and (for some) to communicate and navigate. Sound waves can travel much further and with much less loss of strength
As underwater radiated noise levels in the oceans increases, MARIN has investigated just how much cavitating propellers are to blame. Traditionally, underwater radiated noise is mainly of interest for naval vessels and fishery research ships
A new polar-class logistic support tanker for the Royal New Zealand Navy (RNZN) will be the first naval vessel to feature the Rolls-Royce Environship design with wave piercing bow. The new vessel, which will replace the 30-year-old HMNZS Endeavor
Two stern trawlers of Rolls-Royce design are contracted to be built by the Freire Shipyard in Spain. The two vessels, both designed for catching shrimp, have been ordered by Greenland based ship owners Qajaq Trawl and Polar Seafood.
Wärtsilä said it has signed a contract with Construcciones Navales del Norte SL (LaNaval) shipyard in Sestao, Spain for the design and supply of the LNG power and propulsion installation for a new RoRo passenger ferry being built for Spanish owner Baleària