Wärtsilä dual-fuel engines for tankers

22 Jun 2017
Erik Thun vessel

The four Erik Thun vessels will be fuelled by LNG and diesel

Finnish-owned Wärtsilä will supply the engines, propellers, and fuel supply systems for four new liquefied natural gas (LNG) and diesel-fuelled tanker vessels.

The ice-class 1A vessels are being built at the Scheepswerf Ferus Smit yard in the Netherlands for Sweden-based Erik Thun.

Aaron Bresnahan, vice president of sales at Wärtsilä Marine Solutions, said: "The fuel efficiency of the Wärtsilä 34DF engine, whether in gas or diesel mode, was a prime consideration in its selection for these 'next generation' tankers.”

The 115m long coastal tankers feature a 'next generation' design focusing on high energy efficiency and low noise levels both above and below the water.

Each of the four vessels includes a 6-cylinder Wärtsilä 34DF dual-fuel main engine, a Wärtsilä LNGPac fuel supply system, a Wärtsilä Gas Valve Unit (GVU), and a controllable pitch propeller (CPP) with HP nozzle.

Wärtsilä’s fuel system features an open type Tank Connection Space (TCS) that allows natural ventilation and is designed to be lightweight.

It has a combined cargo heating medium that controls the temperature both inside the TCS as well as for evaporating the LNG. The company said the system will minimise installation work for the yard and reduce the power supply requirement.

The equipment will be delivered to the Scheepswerf yard in 2018.

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