Propulsion

Advanced propeller designs such as the NPT, Kappel and CLT find their worth with ultra slow speed diesel engines, writes Wendy Laursen

MAN PrimeServ has handled some demanding repair jobs on both two-stroke and four-stroke engines, as discovered on a recent visit by Henrik Segercrantz to MAN PrimeServ’s hub in Hamburg, Germany.

Propulsion requirements for diesel-electric offshore vessels with deeper-water capabilities have come under the microscope at MAN. Henrik Segercrantz reports

ABB Turbocharging, of Switzerland, recently released for sales and production the first frame size in its A100-L series of high pressure turbochargers for low speed, two-stroke engines.

Transmission specialist ZF Marine says that it is involved in several specialist applications, supplying, in some cases, thrusters and propellers as well as reduction gearboxes.

The importance of conceptual design and pre-engineering in the design of complex systems such as those for propulsion was recently reinforced for Alewijnse Marine Systems when the opening stages of a new…

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.

Wärtsilä believes that the dual-fuel option for gas-fuelled ships offers economic benefits as well as practical and environmental advantages.

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.

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…

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.

In the critical area of turbocharger maintenance, equating quality with original equipment manufacturers doesn’t suit everyone, according to Wendy Laursen.

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,…

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.

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…

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…