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
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 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 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
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.
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
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
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
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 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
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
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
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
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
Hydrex Underwater Technology has assisted an excavation vessel hemorrhaging oil from a stern tube seal entangled with steel wire to pass safely through the Panama Canal. The 156m long, Dutch-owned vessel was unable to make the canal transit until the propeller shaft seal had been repaired
The Great Lakes Towing Company said it has repositioned its Tug Huron to Duluth, Minn. on Monday, January 2, 2017 to enhance capabilities for icebreaking, harbor assist and other services essential to commercial shipping in the Duluth-Superior region.
Two newly built custom tugboats have been delivered to Canadian based SNC Lavalin to operate during the construction of Montreal's New Champlain Bridge on the Saint Lawrence River. The new vessels, one 13 meters long and the other 15 meters long
Shipbuilder Ferus Smit said it has launched M.V. Arklow Castle at its Westerbroek yard in the Netherlands. Arklow Castle (Nb. 426) is the third cargo vessel in a series of 10 that will be delivered to Irish owner Arklow Shipping.
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
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).
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
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
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
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
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