Washburn & Doughty Wins Hybrid Tug Orders
East Boothbay, Maine based Washburn & Doughty said it has secured a contract with Harbor Docking and Towing, of Lake Charles, La., to design and build two 93’ x 38’ Hybrid Z Drive Tugs. The 93’ x 38’ hull is a proven design with 18 tugs in operation and 4 under construction. The vessel will be built as a Harbor Assist Vessel as defined in USCG Subchapter M and admeasure less than 200 gross tons U.S. regulatory tonnage. Caterpillar Marine will provide a ‘stem-to-stern’ Cat content hybrid propulsion system, with support from both Milton Cat and Louisiana Cat in the sales effort. The hybrid propulsion system scope includes 3512E (2,550 HP @ 1…
MAN Diesel Expands CP Propeller Portfolio
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.
Maritime Propeller Repairs Certified for In-Situ Welding
Maritime Propeller Repairs BV (MPR) obtained a DNV-GL certification to perform propeller repairs using in-situ welding, the company announced today. Netherlands-based MPR is now the only company certified for vertical welding on propellers. Most repairs on propeller blades require the removal of the propeller from the shaft, which necessarily includes the removal of the rudder, a time-consuming and costly procedure. MPR developed techniques that allow the welding operations on propeller blades to be performed without removing the propeller.
DNV GL Launches Project to Test Biodegradable Lubricants
Classification society DNV GL has launched a new joint development project (JDP) in cooperation with marine insurers The Swedish Club, Norwegian Hull Club, Gard and Skuld to test the potential influence of Environmentally Acceptable Lubricants (EALs) on failures in stern tube bearings. DNV GL will oversee detailed laboratory testing of EALs by Leonardo Testing Services Ltd. at the University of Sheffield (UoS), UK. The JDP has been prompted by an increase in stern tube bearing failures over the last few years.
Hyundai Heavy Produces 5,000th Propeller
Hyundai Heavy Industries (HHI) has announced that it held the production ceremony of the 5,000th propeller at its Ulsan factory. The 5,000th propeller measuring 10.6 meters in diameter and 77 tons in weight is scheduled to be installed on a 300,000 DWT VLCC ordered from Athens-based Thenamaris by the end of this month. HHI is not just the only Korean propeller manufacturer capable of churning out large-sized ship propellers heavier than 40 tons, it also has the biggest pie in the global ship propeller market with the market share of 31% as of 2015.
WÃ¤rtsilÃ¤ Opens Propeller Factory in China
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, ranking China number one in the world. The new factory has more than doubled the annual production output to 6,500 tons of propellers. The new maximum size of propeller that can be produced at the new factory is suitable for the world's largest container ships that are currently envisaged with propellers individually weighing up to as much as 140 tons.
Wärtsilä to Manufacture Propellers at Zhenjiang CME, China
Wärtsilä has signed an agreement with Zhenjiang CME Ltd, a subsidiary of China State Shipbuilding Corporation (CSSC), to begin the manufacture of controllable pitch propellers (CP propellers) at the two companies' joint venture unit, Wärtsilä CME Zhenjiang Propeller Co Ltd, located in Zhenjiang, Jiangsu province. The inauguration of the new factory and the first deliveries are planned for the second quarter 2011. Wärtsilä CME Zhenjiang Propeller Co Ltd will invest $16.4m in a state-of-the-art facility for manufacturing CP propellers. The investment includes the construction of a new 8,000 m2 factory at the same location as the existing fixed pitch propellers (FP Propellers) factory.
Marine Propulsion – MAN Absorb Propellor Company
The board of MAN Diesel & Turbo has approved the company’s take-over of Kappel propeller - including designs, software, and intellectual property together with continued co-operation with Mr Jens Julius Kappel. New fuel-saving and energy-efficient propulsion opportunities are available from the MAN Alpha propeller programme, which now fully integrates the Kappel tip fin propeller blade designs for both controllable pitch propellers and fixed pitch propellers. Optimised propeller and propulsion efficiencies contribute to lowering the EEDI (Energy Efficiency Design Index) of ships…
ClassNK to Issue Guidance on Composite Propellers
Classification society ClassNK announced it will release the world’s first Guidelines on Composite Propellers (Part on Manufacturing/Product Inspection) on August 31. The strength and corrosion resistance of composite materials makes them widely used in fields such as aerospace, automobiles and wind power generation, and their scope of application has been further expanded due to their usefulness. The substitute composite material carbon fiber reinforced plastic (CFRP) weighs in at around just 1/5 of aluminum-bronze. Despite its ultra-lightweight composition, CFRP exhibits the same or more strength compared to the aluminum-bronze composite materials used in conventional propellers. Due to its light weight, CFRP propeller shafts can be manufactured with smaller diameters, reducing costs.
New Propeller Optimization Process Can Analyze 10,000 Designs a Day
A newly developed propeller optimizer makes it much faster to identify propeller-hull reactions and reach design decisions. In the EU project STREAMLINE the fuel efficiency of a chemical tanker was improved by optimizing the hull form and propeller. To this end, MARIN used its hull optimization program PARNASSOS EXPLORER and a newly developed propeller optimizer. The hull form itself was optimized for low resistance and for having a wake field as rotationally symmetric as possible, while simultaneously maintaining the displacement and sufficient space for the engine room.
HydroComp PropElements 2017- Update
HydroComp PropElements 2017 – the propeller “design for performance” code from HydroComp,Inc. of Durham NH USA – is the latest build of the company’s commercial software for marine propeller design and analysis. Propeller specialists will find it an essential addition to their software tools, and also tackles the component-level hydrodynamic needs of naval architects. Why PropElements? Still an uncharted domain for many naval architects, propeller design is an iterative process following a typical design spiral – from initial sizing through detail design.
Wärtsilä Wins Bulk Orders for 72 FPPs
The propeller manufacturer and joint-venture company Wärtsilä CME Zhenjiang Propeller Co Ltd signed contracts in November to deliver a total of 72 fixed pitch propellers (FPP) at a value of approximately EUR 30 million. The company will deliver the propellers to six of China's leading shipbuilders for vessels due to be delivered between 2009 and 2011. The nickel-aluminium bronze propellers, totalling over 2700 tonnes with diameters ranging from 6.1 - 8.2m, will be for installation to different types of vessels including oil tankers, containerships and bulk carriers.
Propeller Club Holds Annual Convention
Over 400 participants converged on Biloxi, Miss., to attend the annual Propeller Club Convention. Maritime industry leaders, Propeller Club Members from around the world, Propeller Club Student Port Members and spouses enjoyed informative panel discussions that addressed issues such as Shipbuilding, Terminal Operations, Offshore Drilling Construction, Short Sea Shipping in Europe and the U.S., Inland Waterway Issues, Homeland and Port Security, Ballast Water Issues and others. When not attending excellent panel sessions, attendees were afforded southern charm and hospitality at every turn as the host Ports of Gulfport, Pascagoula and Mobile created a unique and rewarding experience for all.
CP Propeller Drive Celebrates 100 Years
MAN B&W Diesel has been part of the propeller business from the very beginning. The first Alpha Controllable Pitch Propeller was produced in 1902 and patented in 1903. In the meantime, more than 6500 MAN B&W propellers have gone into service. A great variety of CP Propellers with Propulsion Control Systems for all applications up to to-day’s 30 000 kW range. On 3 December 1903 the CP Propeller patent came into force, and the past CPP-century was celebrated with a propeller conference at MAN B&W Diesel in Denmark exactly on the anniversary day 3 December 2003. Invited guests from shipyards, owners, ship consultants and design organisations - together with technical editors from the major magazines…
Van Oord Orders Two New Dredgers
Rotterdam-based dredging and marine contractor Van Oord has recently ordered two trailing-suction hopper dredgers as part of its continuous investment program. The vessels will be constructed at CNN LaNaval Shipyard in Sestao, Spain with delivery dates scheduled for 2017. Each vessel will feature a complete MAN Diesel & Turbo propulsion package with MAN 6L48/60CR engines, RENK gearboxes with PTO, MAN Alpha CP Propeller systems, AHT (Alpha High Thrust) Propeller nozzles and MAN Alpha AT3000 propulsion-control systems.
Underwater Propeller Repair Amsterdam
The owners of a Container vessel consulted FN Diving regarding heavy vibrations of the propeller. FN's team attended the vessel for an underwater inspection while offloading in Amsterdam port, and the underwater inspection revealed two damaged and two bent propeller blades due to ice damage on a 5200MM Propeller. In a normal scenario the blades would be cold straightened however the damaged tip on the opposite blade made this impossible. To assure a minimum delay for the vessel, the decision was made to crop the damage in a way maintaining the propellers hydro-dynamic requirements.
HydroComp to Hold Propeller 'Mini-Workshop'
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, construction and operation of workboats and pleasure crafts. These two half-day educational seminars will focus on topics of Successful Pre-construction Propeller Selection (including principles of marine propulsion and initial propeller sizing) and…
Dalian to Produce and Sell Kappel Propellers in China
On August 30, 2013 MAN Diesel & Turbo signed an agreement regarding the production of its Kappel propeller portfolio with Dalian Marine Propeller Co., Ltd (DMMP) – part of the China Shipbuilding Industry Corporation (CSIC) Group – at its facility in Frederikshavn, Denmark. The deal allows DMMP to produce and sell MAN Alpha Kappel design propellers in China. MAN Diesel & Turbo subsequently announced that DMMP has signed a Kappel design propeller contract with Xiamen Shipbuilding Industry Co.
Container Ship Propellor Damage Fixed by 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. In order to assure a minimum delay for the vessel…
HydroComp Propeller Design & Analysis Course
HydroComp’s new two-day comprehensive PROPS2010 Bootcamp is an intensive professional development workshop on marine propeller design and analysis. This course was developed to fill demand from propeller builders and distributors, naval architects and shipbuilders, ship operators, and engine and transmission companies. This Bootcamp will be held on April 29-30 in Durham, New Hampshire. The two-day Bootcamp will have four principal topic groups that follow the common “life-cycle” of a marine propeller: 1. principles of propulsion and propeller sizing 2. fundamentals of detail propeller design 3. propeller CAD 4. propeller analysis and troubleshooting For more detailed information, visit the Bootcamp page at: http://www.hydrocompinc.com/training/PROPS2010Bootcamp.htm
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.
Moving Ahead Powerfully
The layout of ship propellers is a balancing act between optimal power conversion and the avoidance of unwanted cavitation effects, which can result in damage to the propeller structure and higher noise levels. MAN Diesel & Turbo in Frederikshavn, Denmark, is using the computational fluid dynamics (CFD) simulation solution STAR-CCM+ from Siemens PLM Software to model cavitation and optimize ship propellers. Two mid-size container ships of 8,500 TEU – CSCL Europe and CSCL America – will be upgraded by retrofitting a efficient Kappel propeller.