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Fifth Order For Wärtsilä

Company to provide another LNG package to STX Marine

Posted on December 10, 2012

Wärtsilä has received another contract to supply a complete liquefied natural gas (LNG) package, including the propulsion, auxiliaries and controls, for a new offshore support vessel designed by STX Marine, Inc. The ship has been ordered by Harvey Gulf International Marine as a part of the company’s ‘Going Green’ initiative.

The vessel will operate in the Gulf of Mexico’s offshore oilfields. This latest order is the fifth that Wärtsilä has received from Harvey Gulf for gas-fuelled propulsion products. In October 2011, Wärtsilä technology was selected for two new Harvey Gulf offshore support vessels, making them the first ever U.S. flagged platform supply vessels (PSVs) to be powered by LNG, the company said.

Wärtsilä will supply the steerable thrusters, an Integrated Automation System, the Power Management System, a complete Low Loss Concept for the electrical distribution and drive architecture. All five of the vessels will be powered by six-cylinder Wärtsilä 34DF dual-fuel generating sets capable of running on either LNG or conventional liquid fuels. The switch between fuels can be made seamlessly without loss of either power or speed, Wärtsilä said.

Wärtsilä will also supply the LNGPac LNG bunkering, storage and supply system. In gas mode, emissions of nitrogen oxide are reduced by 85% compared to diesel operation, sulfur oxide emissions are completely eliminated, and CO2 emissions are also reduced.