Marine link
 

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


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.


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


Voith Schneider Propellers Drive Double-ended Ferry MS Frisia IV

New double-ended ferry serving the North Sea island of Norderney

  Ferries operated by Norden-Frisia AG have been serving the East Frisian island of Norderney for many decades. Navigation in these coastal waters poses special challenges: in some areas the waterway only leaves a few centimeters below the keel and the water contains a significant amount of


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


HydroComp to Hold Propeller 'Mini-Workshop'

Photo courtesy of HydroComp

A special version of HydroComp's intensive Propeller Workshops will be brought to Tampa before the start of IBEX 2014.   The Mini-Workshop is a special version of HydroComp’s intensive Propeller Workshops for those involved in design


Horizon Delivers 4th 74’ Towboat for Canal Barge Co.

MV Jane Merrick: Photo credit Horizon Shipbuilding

Horizon Shipbuilding, Inc., Bayou La Batre, AL, has delivered the fourth in a series of 74’ towboats to Canal Barge Company, Inc. of New Orleans, LA.    The Jane Merrick is 74’ long with a 32’6” beam and an 8’6” draft


USCG Assists Stranded Charter Vessel

U.S. Coast Guard (USCG) crews are assisting a disabled passenger vessel approximately 13 miles east of Nahant, Massachusetts, Monday. Watchstanders at Coast Guard Sector Boston received notification at approximately 4:30 p.m., that the 83-foot passenger vessel Cetacea had a line entangled in


Underwater PBCF Installation in South Korea

Photo: Hydrex

Last month Hydrex installed Propeller Boss Cap Fins (PBCF) on a 289-meter tanker during the vessel’s stop in Mokpo, South Korea. A Propeller Boss Cap Fins (PBCF) can recover energy loss of a propeller hub vortex in the propeller’s backward flow


FPP Design from Wärtsilä

Image: 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.


Dynaligner Aims to Eliminate Shaft Misalignment

Dynaligner (Eric Haun).jpg

A Swedish and Dutch invention aims to eliminate misalignment, modernizing today’s shaft alignment practice. The Dynaligner is said to offer trouble free operation of marine propulsion trains, irrespective of ship operation condition or hull deflections


Van der Velden Marine Systems at SMM 2014

YV2014 Van der Velden FLEX Tunnel 3  situations.jpg

Van der Velden Marine Systems BV, specialist in the field of manoeuvring and propulsion efficiency, will exhibit at the SMM 2014 International Trade Fair in Hamburg, which will be held from 9 until 12 September. Van der Velden can be found at stand Hall A4 – booth 208.


W&O’s Emerson Elected Propeller Club VP

Tammy Emerson

W&O, a global supplier to the marine and upstream oil and gas markets for pipe, valves and fittings, valve automation, and engineered solutions, announced that Senior Account Executive Tammy Emerson has been elected as vice president of programs of the Jacksonville Propeller Club


MN 100: Bollinger Shipyards

MV Charlotte.jpg

8365 Hwy 308 South Lockport, LA 70374 Tel: (985) 532-2554 Email: Robert S@bollingershipyards.com Website: www.bollingershipyards.com CEO: Donald “Boysie” Bollinger President: Chris Bollinger The Company: Established in 1946, the family owned and operated


MAN Extends Helping Hand to Mercy Ships

Africa Mercy: Photo Wiki CCL

MAN Diesel & Turbo says it has donated the equivalent of $115,000 dollars in service, spare parts and training to keep the engines of the hospital ship 'Africa Mercy', operated by Mercy Ships, in top condition to continue its charity work in Africa.


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






 
rss feeds | archive | privacy | history | articles | contributors | top news | contact us | about us | copyright