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Propellers

New Propeller Optimization Process Can Analyze 10,000 Designs a Day

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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. Meanwhile, the propeller was required to deliver the right thrust at the same ship speed and engine rate of revolutions. Normally, the propeller designer starts when the hull lines have been set and the main propeller parameters have been decided upon. These parameters follow from series analysis, such as the Wageningen B-Series, plus hands-on experience and rules of thumb to estimate the effect of propeller-hull interaction. For instance, the sector knows that the best propeller diameter in a wake field is smaller than given by the propeller series. Once the main dimensions are selected, the designer continues to mold the geometry until the efficiency is high and the hindrance from cavitation is as low as possible. This is a time-consuming process that is particularly ill-suited to finding the best propeller when considering 500 hull form variations can be generated, as was the case here


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


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 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, Wärtsilä CME Zhenjiang Propeller Co Ltd (WCME), in December 2015. Other leading Greek shipping companies have also recently opted for Wärtsilä FPPs.


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


Quick Propeller Repair Prevents Drydocking

One of the propeller blades was missing parts of its tip. (Photo: Hydrex)

Recently a team of Hydrex diver/technicians performed a propeller blade cropping on a 190-meter container bulker berthed in Hamburg. Two parts of the tip of one of the four propeller blades were damaged and needed to be cropped to restore the propeller’s efficiency.    Having developed different procedures for different kinds of damage, Hydrex teams are equipped and trained to make the best out of a bent or broken propeller


Tests Prove CLT Prop Characteristics

The CLT propeller recently underwent real-world testing, which proved, according to its designer and manufacturer that the propeller can help to reduce or eliminate hull-induced vibrations and noise levels. Independent studies were conducted aboard Superfast Levante, which demonstrated that: the cavitation level developed on the CLT propeller blades is negligible from the ship's structural integrity point of view; vibration and noise levels are excellent in terms of comfort on board; and the


India Tankship to Retrofit MAN Kappel Propeller

MT Jag Lavanya: Photo credit MAN Diesel & Turbo

MAN Diesel & Turbo’s PrimeServ retrofit team is to supply India's Great Eastern Shipping Company (GESCO) of Mumbai with an upgrade retrofit propeller for their tankship 'Jag Lavanya', a Samsung 2004- built 105,000 dwt crude oil carrier.
 Kappel fixed pitch propellers
 MAN Diesel & Turbo recently announced a strategic focus that added the Kappel design to its fixed-pitch propeller portfolio, both for newbuildings and as a retrofit solution to vessels already in service


A Heavyweight on Display at SMM

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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. Weighing in at around 80 metric tons, with a diameter greater than nine meters and a total blade surface area of 42 square meters, the ship propeller made by Mecklenburger Metallguss GmbH (MMG) is an impressive head-turner at this


MAN Propulsion Packages for New Icelandic Trawlers

New Icelandic trawler rendering courtesy of MAN

MAN Diesel and Turbo inform that Icelandic owners, HB Grandi, Vinnslustodin hf. and Hradfrystihusid Gunnvör, have ordered newbuildings based on two different ship designs from specialist fishing-vessel consultants and designers, Nautic and Skipasýn. Optimised for safety, operational economy and pulling power, the 50-metre-plus vessel series differ in their choice of specified propeller, aft-ship and propeller-nozzle configurations


Marine News Boat of the Month: March 2017

Image: AAM

Red & White Taps AAM for Hybrid Electric U.S.-Built Passenger Vessel   All American Marine (AAM) in February announced a deal for the construction of a new hybrid electric, 600 passenger aluminum monohull vessel to be delivered to the Red and White Fleet of San Francisco, Calif


Thordon’s SeaThigor up for Environmental Award

SeaThigor, the forward propeller shaft seal Thordon Bearings introduced to the market last year, has been nominated in the technology category of the Green4Sea awards, which will take place in Athens this April.   Thordon Bearing’s President and CEO, Terry McGowan


Rolls-Royce Wins USCG OPC Propulsion Contract

Offshore Partrol Cutter (Photo: Rolls-Royce)

Rolls-Royce will provide an extensive range of equipment, including MTU marine generator sets, to a new fleet of U.S. Coast Guard Offshore Patrol Cutters (USCG OPC). The Rolls-Royce equipment was selected by Eastern Shipbuilding Group (ESG) Inc


New Briese Vessels Sport Schottel Propulsion

Illustrations of Briese multi-purpose vessel “D’Artagnan.” (Image: Groot Ship Design)

Briese Group contracted Groot Ship Design to deliver the design and basic engineering package for four multi-purpose vessels. Schottel performed enhanced CFD investigations to determine the optimal aftship configuration incorporating nozzle support and streamline body between rudder and hull


New Trawler Launched in Poland

Photo: Nauta Shiprepair Yard

One of the world’s most powerful pelagic vessels launched at Nauta Yard    A launching ceremony for the partly outfitted fishing trawler M/V Voyager took place February 21 at Newbuilding Division of Nauta Shiprepair Yard in Gdańsk, Poland


Vancouver Port Selects “PBCF” as Equipment Designated

PBCF (circled in yellow) is being installed. Photo MOL

Mitsui O.S.K. Lines, Ltd. today announced that Propeller Boss Cap Fins (PBCF) was selected as a vessel quieting technology by the EcoAction Program implemented by Port of Vancouver, Canada. PBCF was jointly developed by MOL, West Japan Fluid Engineering Laboratory Co., Ltd


Cruise & Maritime Voyages selects Damen

Marco Polo at DSAm Photo Damen

Damen Shiprepair Amsterdam (DSAm), part of Damen Shiprepair & Conversion (DSC), has completed maintenance works on cruise vessels Marco Polo and Magellan. Both vessels are operated by British based Cruise & Maritime Voyages (CMV), part of the Global Maritime Group


Hyundai Heavy Produces 5,000th Propeller

HHI’s 5,000th Propeller. Photo: Hyundai Heavy Industries

 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


Viking XPRS Returns to Helsinki-Tallinn Route

M/S Viking XPRS. Photo: Viking Line

 Finnish ferry company Viking Line  continues to modernise its vessels. The M/S Viking XPRS, which has just undergone dry-docking, has been back sailing its usual Helsinki–Tallinn route starting on February 1.    Passengers on the renovated vessel can now look forward


Gladding-Hearn Delivers to Michigan Pilots

Photo: Gladding-Hearn Shipbuilding

The Lake Pilots Association, District 2, in Port Huron, Mich., has accepted delivery of Huron Spirit, a new Chesapeake Class pilot boat from Gladding-Hearn Shipbuilding, Duclos Corporation.    With a length overall of 52.5’, a beam of 16.7’, and a draft of 4


HydroComp PropElements 2017- Update

Image HydroComp PropElements

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


Wärtsilä,Tallink Ink Megastar Maintenance Deal

Megastar starts operation on 29 January 2017. Wärtsilä will optimise the vessels performance, enhance its availability and reliability, and improve financial predictability for the customer. Photo Wärtsilä

Wärtsilä has signed a five-year maintenance agreement with Estonia based AS Tallink Grupp for its new RoPax ferry M/S Megastar on the Tallinn - Helsinki route across the Gulf of Finland. Megastar, due to start operation on January 29, 2017


REINTJES Opens UK Branch Office

The new REINTJES branch office is located in the Robert Denholm House, together with other companies. (Photo: REINTJES)

Propulsion specialist REINTJES said it has opened a new branch office in the south of England to service markets in the U.K. and the Republic of Ireland. Opening of the REINTJES Britain & Ireland branch office follows on the cessation of trading by the former distributor European Marine and


Detyens Wins Medgar Evers Overhaul Contract

USNS Medgar Evers (U.S. Navy photo by J. M. Tolbert)

Detyens Shipyards Inc. said it was awarded a $13.6 million firm-fixed-price contract for a 60-calendar day shipyard availability for the regular overhaul and dry-docking of U.S. Navy’ Military Sealift Command (MSC) cargo ship USNS Medgar Evers (T-AKE 13).  


HullPIC conference Showcases Solutions

Photo: DNV GL

 To spur development and raise awareness for hull performance monitoring, DNV GL and paint manufacturer Jotun are inviting industry stakeholders to the second Hull Performance & Insight Conference (HullPIC).    Hull performance monitoring solutions offer significant fuel






 
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