Propulsion

Wärtsilä has been contracted by Norwegian ferry operator Color Line to retrofit four exhaust gas cleaning systems to the company’s ‘SuperSpeed 2’ ro-pax ferry.

Recent deliveries for offshore and navy applications demonstrate improved maintenance and safety features suitable for all workboats and patrol vessels with waterjet propulsion, writes Wendy Laursen.

Slow steaming, fuel sulphur limits and desires to cut fuel costs and ship weight all provide challenges for two-stroke designers, builders and lubricant suppliers.

Marine gas turbines are looked on as a comparatively new development and most marine turbines have been developed from aircraft engines, writes Dag Pike.

Swedish company MJP waterjets says that two recent refits of waterjets allowed a direct comparison to be made between waterjet brands.

GE Marine has delivered another LM2500+G4 marine gas turbine to Avio of Italy, which will power the French Navy’s eighth FREMM frigate.

An optimised stern tube assembly and improved shaft bearings aim to improve yard installation time.

An estimated 4.6 to 28.6 million litres of stern tube lubricant entering the sea each year means that biodegradable oils and water lubrication are likely to figure more definitively on the regulators…

Goltens Worldwide Group of companies describes its repair process for in-situ annealing of medium speed four-stroke diesel engine crankshafts, for which it has been awarded worldwide approval.

Propulsion solutions for navigation in ice have been augmented by Wärtsilä’s development of a steerable, pulling thruster designed to 1A Super Ice Class or higher standards, known as the Icepod. David Tinsley…

In response to rising industry demand for more sustainable shipping, the industry is turning to LNG as a primary fuel. But with inadequate LNG infrastructure, engine manufacturers are working with other industry…

Renewed industry focus on fuel savings and increasingly strict emissions regulations now coming into force have led to a new spirit of cooperation among owners and engine manufacturers, by Mark Fuhrmann.

At the SMM exhibition in Hamburg in September, Belgian medium speed engine company ABC launched a new, larger engine, which the company hopes will extend its market penetration into larger merchant vessels,…

Wärtsilä explains how over the last two years it has been carrying out a test programme of improvements to its 32cm-bore four-stroke engine, to provide claimed best-in-class power density and fuel economy…

Zamakona Shipyard in Spain has recently delivered an 87m long standby vessel, ‘Esvagt Aurora’, to the Esvagt company, which belongs to the Danish multinational A.P. Møller-Mærsk group.

The Lienchiang County Government of Taiwan has ordered two MAN 9L32/44CR four-stroke engines to power a ro-pax vessel sailing between Keelung and the Matsu islands, an archipelago located close to the Chinese…

A hybrid propulsion system for a patrol vessel, designed along OSV lines, is described by Dag Pike

A Dutch company has developed a new, particularly compact, electric drive propulsion system, writes Dag Pike.