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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


RSC Bio Solutions Hydraulic Fluids Earn MAN Approval

RSC Bio Solutions announced that its EnviroLogic 3068 and EnviroLogic 3100 high performance hydraulic fluids have been approved for use in MAN Diesel & Turbo systems. This approval allows RSC Bio Solutions to serve customers who have MAN stern tubes and propellers


Thordon Bearings Launches Oil Savings Calculator

 Thordon Bearings Launches Oil Savings Calculator   Thordon Bearings has developed a bespoke modeling tool capable of calculating the amount of operational oil prevented from leaking into the world’s oceans with each installation of a seawater-lubricated propeller shaft bearing.


CASPER Teams up with ECKS MARINE

Copenhagen-based Propulsion Dynamics and Hamburg-based ECKS MARINE have signed an agreement to work together on the German maritime market with the goal of improving energy efficiency related to hull and propeller condition with Propulsion Dynamic’s CASPER Service.  


Incat Crowther Supplies Crewboat Design, Build Kits

Image: Incat Crowther

Incat Crowther has been awarded a contract with shipbuilder Astinave EP of Guayaquil, Ecuador for the supply of vessel design services and aluminum component kits for a pair of 22.5m monohull crewboats currently under construction for an undisclosed client


Damen Delivers Hybrid Tug to Netherlands Navy

Photo: Damen

The first of a series of three ASD TUGs 2810 Hybrid was navigated into the Den Helder harbor by the Royal Netherlands Navy (RNLN) on Saturday, February 20. This hybrid tug that bears the name Noordzee is almost 29 meters long and is the first standard hybrid tug supplied by Damen that the RNLN


Ports Toronto Gives Shape to Robert Allan Tug

Tug Iron Guppy – a new Robert Allan Ltd. ice-breaking tug taking shape for Ports Toronto

The Iron Guppy, a new custom 20 metre (65') ice breaking tug designed by Robert Allan Ltd of Vancouver is taking shape at Hike Metal Products Ltd in Wheatley, Ontario.   The tug is under construction for Ports Toronto and will replace the 1961 vintage William Rest which has served the port


The New Standard in Transportation and Propulsion

Cargo vessel Coastal Standard (Photo: Coastal Transportation)

The latest addition to the Coastal Transportation fleet, MV Coastal Standard, was built at Dakota Creek Industries Shipyard in Anacortes, Wash. with a design developed to maximize cargo carrying capacity while minimizing construction and operating costs, according to the shipbuilder


'Singing' Propellers Phenomenon Controlled

Singing Propeller -  Wärtsilä and City University London have in a joint research project succeeded in identifying the specific design parameters that create the risk of singing propellers. Photo Wartsila

A joint research project carried out by Wärtsilä and City University London has succeeded in identifying the specific design parameters that create the risk of 'singing' propellers. Though rare, 'singing' is nevertheless an annoying problem that occurs as a strong tonal noise originating


Wärtsilä Launches WTT-40 Transverse Thruster

The WTT-40 addresses market requirements for high power transverse thrusters for bow and stern applications

Wärtsilä is launching its new Wärtsilä WTT-40 transverse thruster. The first WTT-40's have been ordered and are scheduled for delivery during 2016. This first variant is part of Wärtsilä's new transverse thruster series and features a 4000 kW power level and a 3400


Wärtsilä Propellers to Drive Greek Tankers

A Wärtsilä Fixed Pitch Propeller fitted with the EnergoProFin. Photo Wartsila

TMS Tankers Ltd, one of the largest Greece based shipping fleet operators, has selected Wärtsilä fixed pitch propellers (FPPs) for its new vessels under construction in China. The order was placed with Wärtsilä's joint venture company in China


Evolutionary Carrousel RAVE Tugs Under Construction

The Carrousel Towing System system eliminates risk of capsizing under  tow load. In combination with two Voith Schneider Propellers arranged in-line, the tug design allows for a slender and highly efficient hull Photo Voith

In cooperation with R. Allan Ltd. (RAL) and Novatug B.V., Voith participated in the development of a new tug. The Carrousel RAVE Tug (CRT) is characterized by a towing winch on a ring. This ring can rotate freely around the tug's deckhouse – a unit referred to as the "Carrousel Towing


Pioneering Container Feeder Vessel Designs

ECX-3800 3800 TEU Feeder Vessel (Image: KNUD E. HANSEN)

The Danish naval architect company KNUD E. HANSEN has recently been developing a number of container feeder vessel designs. Each of the designs presents a series of innovations as part of a solution tailored to specific requirements.  


Suezmax Newbuilds Feature MAN Engines with EGR

Integrated design of EGR unit (orange) into an MAN B&W 6G70ME-C9 engine (Image: MAN Diesel & Turbo)

Hyundai’s Ship Building Division (HHI-SBD) has finalized a contract for two Suezmax tankers for Turkish shipowner, Ditas Shipping. The 158,000-cubic-meter crude-oil tankers will each be powered by individual MAN B&W 6G70ME-C9.5 two-stroke main-engines that feature integrated Exhaust


MAN 32/40 Package for Chinese Dredger

Library photo of the MAN 32/40 engine (Photo: MAN Diesel & Turbo)

Jiangsu Haihong Engineering Technology Co., Ltd. has ordered four MAN 32/40 engines in connection with an order for two 8,000-cubic-meter trailing suction hopper dredgers.   MAN’s scope of delivery covers two shipsets, each including a propulsion package consisting of two 9L32/40


Two Canadian Ferries to be Converted for LNG Operation

Image: Scott Arkell/Wärtsilä

Wärtsilä has been awarded the contract by Gdansk Shiprepair Yard Remontowa S.A., to supply a scope of engines, propulsion machinery, integrated automation systems, and gas handling systems required for the mid-life upgrading of two RoPax ferries and their conversion to operate on LNG fuel






 
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