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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


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


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


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


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


3D Scanning Speeds Up Drag Boat Racing

Photo courtesy of Lucas Oil

NVision, Inc., a company in 3D laser scanning and reverse engineering for over 24 years, said it was able to help a motorsports boat designer optimize the design of the custom-built propellers created for its Top Fuel Hydro drag boat. The boat is equipped with two custom-designed and handmade


MN 100: Thordon Bearings Inc.

Thordon_1.jpg

3225 Mainway Burlington, State ON Canada L9C5J8 Tel: (905) 335-1440   Email: craigc@thordonbearings.com  Website: www.thordonbearings.com President & CEO: Terry McGowan The Company: Thordon Bearings Inc. designs and manufactures a complete range of polymer bearing


MN 100: Twin Disc, Inc.

Twin Disc BCS Hydraulic Thruster EH.jpg

1328 Racine Street Racine, WI 53403 Telephone: 262 638 4000 Web: www.twindisc.com President and CEO: John H. Batten Number of employees: 990 The Company: Twin Disc designs, manufactures and distributes heavy-duty power transmission equipment for a wide range of marine applications


TORM Contracts Albwardy for Diving Services

Propellor polishing (photo by AME)

Danish product tanker carrier TORM A/S and UAE-based Albwardy Marine Engineering (AME), an Albwardy-Damen JV, have signed a Service Level Agreement for diving services in the UAE region. The purpose is to further strengthen their relations and respective commercial reliability


First Havyard WE Design Delivered to Fafnir Offshore

Havyard Ship Technologys build 120 Polarsyssel, a Havyard 832 L WE design, 2

  Havyard Ship Technology's build 120 'Polarsyssel', a Havyard 832 L WE design, was delivered to Fafnir Offshore yesterday. It will go straight on assignment for the Governor of Svalbard In March 2013, Havyard signed a contract with Icelandic shipping company Fafnir Offshore for the building


Caterpillar Debuts MaK M 25 E Engine Platform

MaK M 32 E engine platform

Efficient power solution can deliver up to $250,000 in fuel savings for offshore supply vessels Caterpillar Marine announced the launch of the MaK M 25 E engine platform at the 2014 SMM Exhibition, held September 9 -12 in Hamburg, Germany


Wärtsilä Debuts Controllable Pitch Propeller System

The new Wärtsilä CP propeller system offers greater efficiency and a reduced environmental impact.

At the SMM exhibition and conference in Hamburg, Germany, Wärtsilä is introducing its latest development of large Controllable Pitch (CP) Propellers, based on the previously known E-hub type. The new CP propeller system offers greater efficiency and a reduced environmental impact.


9 new Voith Water Tractors for safety at Mexican OTs

Voith Water Tractors

  Mexico’s state-owned petroleum company PEMEX (Petróleos Mexicanos) invests in a modern tug fleet. Voith was awarded to supply the propulsion for nine new Voith Water Tractors (VWT) which are to enhance the safety of oil tankers entering and clearing port at several terminals


PEMEX Invests in Nine Voith Water Tractors

Photo courtesy of Voith

Mexico’s state-owned petroleum company PEMEX (Petróleos Mexicanos) invests in a modern tug fleet. Voith was awarded to supply the propulsion for nine new Voith Water Tractors (VWT) which are to enhance the safety of oil tankers entering and clearing port at several terminals as of


A Heavyweight on Display at SMM

csm_sm14_eingang_b974363432.jpg

On Thursday morning a huge mobile crane placed the five-blade ship propeller in front of the main entrance of Hamburg's fair center, Hamburg Messe. The propeller is a head-turner at this year's SMM, the leading international trade fair of the maritime industry.


Damen to Supply Nozzles for ALP Ocean Tugs

Photo: Damen

Damen Marine Components will supply a total eight 5,050 millimeter propeller nozzles for four ultra long distance towing and anchor handling vessel newbuildings. They are the largest nozzles that DMC will have manufactured with its spinning machine technique to date


NZ Interislander Ferry to Dry-dock in Devonport

Aratere: Image courtesy of KiwiRail

NewZealand's KiwiRail says that the Interislander ferry Arahura has left Wellington for her scheduled bi-annual dry-docking in Devonport, having last visited Auckland in July 2012. Docking is being undertaken at the Devonport Dockyard under the management of Babcock’s New Zealand


New Double-ended Ferry for Norderney

The shipping company Norden-Frisia AG had already selected a VSP propulsion system for the Frisia IV. (© Cai Rönnau)

New double-ended ferry serving the North Sea island of Norderney – Safe and eco-friendly maneuvering in shallow, high-sediment water using Voith Schneider Propellers Ferries operated by Norden-Frisia AG have been serving the East Frisian island of Norderney for many decades


Transnet National Ports Authority Orders 9 Voith Water Tractors

Voith Water Tractor tugs are in operation worldwide

  In South Africa’s largest local shipbuilding contract Transnet National Ports Authority has ordered nine new Voith Water Tractors (VWT) for use in several ports across the country. This is also the largest order in the history of Voith marine technology.


Voith Bags Largest Marine Order to Date

Photo: Voith

Voith wins record contract for Voith Schneider Propellers In South Africa’s largest local shipbuilding contract Transnet National Ports Authority has ordered nine new Voith Water Tractors (VWT) for use in several ports across the country






 
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