Propulsion – Page 79
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NewsInduction motors offer low noise signature
According to motor company Indar, up to now vessels complying with Silent class notation have had to use DC motors, but this has now changed.
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NewsMTU guards the Great Lakes
The Great Lakes that border the US northeast corner and Canada, as the world’s largest freshwater lakes holding 21% of the world’s surface fresh water, have a delicate ecological balance, which MTU is helping to safeguard.
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NewsDual fuel ticks all the boxes, says engine designer
Wärtsilä believes that the dual-fuel option for gas-fuelled ships offers economic benefits as well as practical and environmental advantages.
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NewsNeed for compact performance drives turbo technology
Turbocharger development for medium speed engines and high speed generators focuses on efficiency in line with emissions reductions requirements of the future, by Wendy Laursen.
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NewsGreening the low speed fleet
The Motorship recently visited MAN Diesel’s two-stroke headquarters in Copenhagen, where we learned about the company’s latest moves to keep ahead of the game in respect of emissions reduction, particularly with respect to the EEDI.
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NewsImproved marine transmission launched
ZF Marine says that its new ZF 5000 marine transmission family is well positioned to address current market requirements incorporating the latest design and technological advances in a wide range of models.
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Effective oil condition monitoring
According to Intertek UK, the cost and effect of machinery breakdown in a vessel can be severe; from the cost of replacement with new equipment to expensive downtime.
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NewsOperators take servicing philosophies to extremes
In the critical area of turbocharger maintenance, equating quality with original equipment manufacturers doesn’t suit everyone, according to Wendy Laursen.
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NewsDual fuel gains credibility in the low speed market
Both major designers of large low speed two stroke marine engines have demonstrated their commitment to gas as an alternative fuel and have demonstrated dual-fuel technology applied to their engine designs, while, additionally, two Asian licensees are demonstrating their commitment to LNG ship power.
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NewsPutting solar technology into the hybrid mix
Wendy Laursen reminds us that there are solar-collecting sails on the horizon but it may be some time before they make their way into the emissions reduction plans of most shipowners.
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NewsGas turbines – poised for renewed interest?
The two major manufacturers of marine gas turbines – Rolls-Royce and GE Marine - look forward to a resurgence in interest in the face of stricter emissions regulations and the growing acceptability of gaseous fuels.
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NewsFerries lead, tugs may follow
Wendy Laursen outlines how commuter ferries with innovative power systems provide a testing ground for systems that could bring clean power to other vessel types, notably harbour tugs, thanks to battery technology.
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NewsField test success for cut-out procedure
MAN Diesel and Turbo has field tested the cut out of a TCA type turbocharger for improved slow steaming performance and concluded that the marginal fouling and oil leakages that occurred were not critical.
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Engineers meet deadline fixing bearing problem
Shanghai-headquartered Mariso demonstrated a quick response to owner’s needs when its repair team discovered a bearing problem during routine maintenance on a TC VTR 714 type turbocharger.
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NewsFirst dual-fuel newbuild with mechanical drive
An LNG carrier, soon to be delivered from the Meyer Werft yard in Germany, is notable for being the first newbuild gas-fuelled ship with mechanical drive to the propeller – previous such installations have all been part of a diesel-electric plant.
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NewsPerformance monitoring rapidly becomes a total solution
Just a few years ago, real-time system monitoring was only used by a few, technically advanced ship operators but, increasingly, intelligent data management systems are rapidly turning it into a practical and accessible tool for compliance and performance monitoring, writes Wendy Laursen.
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NewsMore gas engine options come to the market
Medium speed engine designers are looking harder still at gas fuelled options – gas-only or dual fuel - while China, rather than continuing to rely on European designs built under licence, is stepping up its domestic engine design programme, as David Tinsley reports.
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NewsShort payback claimed for integrated propulsion solution
Some things may sound too good to be true, and many are – but some have been proven to work, such as the Promas integrated propeller and rudder from Rolls-Royce.
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NewsNo-loss electric propulsion selected for gas-fuelled ships
Stadt of Norway reports that its patented Stadt Stascho no-loss drive system has gained a foothold in Korea with the country’s largest shipbuilder, Samsung, offering the system for its LNG-powered passenger ship designs.
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NewsSeawater scrubber qualifies as EPA 'emerging technology' to reduce particulate matter
Accreditation for Hamworthy Krystallon scrubbers on list of emerging technologies has followed the US EPA’s decision to accept exhaust gas cleaning systems as a viable means of reducing emissions.
