GE Turbines Offer Hybrid Solutions

By Keith Henderson at May 10, 2012 07:36
Filed Under: Company News, Navy News
GE is offering hybrid propulsion systems for military and commercial applications based on its LM series gas turbines using electric motors and drives, to reduce noise and emissions through improved fuel economy. GE has a wide experience of hybrid systems, acting as systems integrator, GE is able to team with other industry suppliers to provide all electric propulsion solutions. A particularly successful combination with gas turbines is the CODAG or CODOG arrangement where diesel engines are employed at low output with the gas turbine(s) only used to produce boost power. As the cost of fuel increases, such solutions are not limited to newbuilds, repowering of existing vessels can also provide tangible financial benefits. In the future wider use of fuel cells can replace diesel engines to provide further reductions in exhaust, noise and vibration emissions. [More]

Successful Sea Trials of Fast Attack Craft

By Keith Henderson at February 09, 2012 07:28
Filed Under: Company News, Navy News
GE Marine has recently reported the successful sea trials of two new patrol vessels built by STX Jinhae, South Korea using gas turbines in combination with diesel engines. The vessels concerned are number eight and nine of the Republic of Korea Navy projected fleet of twenty Gumdoksuri Class, Fast Attack Craft. The 570 ton vessels have an LOA of 206 ft (63 m), beam of 29.5 ft (9 m) and draft of 16.4 ft (5 m). Propulsion is provided by two MTU 16V 1163 TB93 diesels and a single boost waterjet connected to two GE LM500 gas turbines, giving a maximum speed of 40+ kn. [More]

New Helicopter Carrier for Japanese Navy

By Keith Henderson at October 11, 2011 07:35
Filed Under: Navy News
Details of the propulsion system for the new 22DDH Helicopter Carrier of the Japanese Navy / Maritime Self-Defence Force (JMSDF) have been announced. To be built by IHI of Tokyo, the LOA 814 ft (248 m) and beam of 124 ft (38 m) vessel will have a fully loaded displacement of around 27,500 tons. The propulsion system comprises four GE LM2500 gas turbines giving a total power of around 135,000 hp (100 MW) in a COGAG arrangement giving a speed of 30 kt. The ships will also be using GE’s smaller turbine, the LM500 with an output of approximately 6,000 hp (4.5MW) in a turbo-electric configuration for on board power generation. [More]

The Application of LNG as a Fuel for Medium and High Speed Ferries

By Keith Henderson at April 19, 2011 08:26
Filed Under:
Austal Ltd, has just completed an 18 month study on the development of several new types of fast ferry. Their study concluded that the most promising solutions for future regulations are multi-hulled HSC code compliant ferries running at a significantly slower speeds than present fast ferries. Austal gives three examples of new designs using LNG as the main fuel. The largest example is a 127 m trimaran ferry powered by twin dual fuel GE LM2500 gas turbines. A smaller 102 m trimaran ferry uses three 4 MW Wärtsilä 9L34DF dual fuel, medium speed engines. The smallest design example is a 72 m catamaran ferry using a dual fuel diesel/LNG electric propulsion system of four 2.3 MW Bergen dual fuel engines. [More]

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