Friday, February 21, 2014

Totem Ocean to use Wärtsilä technology for LNG ship conversion

Totem Ocean Trailer Express has announced that Wärtsilä will supply main engines, generators and integrated LNG storage and fuel gas handling systems for the largest LNG conversions ever carried out in North America.

Totem Ocean's two Orca Class roll-on/roll-off cargo ships - M.V. Midnight Sun and M.V. North Star - transport about one-third of all the goods needed by the citizens of Alaska. Cargo includes essential items such as food, household goods, vehicles, construction materials and military supply support.

After the conversion, the Totem Ocean vessels will reduce sulfur oxide emissions by 100 percent, particulate matter by 91 percent, nitrogen oxide by 90 percent, and carbon dioxide by 35 per cent.

"Economic constraints and the need to comply with environmental legislation have combined to accelerate the switch to LNG fuel," says Björn Rosengren, president and CEO of Wärtsilä Corporation. "We look forward to working with TOTE on converting the Midnight Sun and North Star to LNG so that they can realize the benefits that LNG as a marine fuel can provide."

Each of the ships will be equipped with four 12-cylinder Wärtsilä 50DF dual-fuel engines and generator sets, and the engines can be run either on natural gas, light fuel oil or heavy fuel oil.

Wärtsilä also provides the vessels with two 1100 m³ LNG fuel storage tanks and the associated automaton and fuel gas handling systems (LNGPac™).

Wärtsilä is taking responsibility for the design, engineering and integration of the system, and project and site management for its scope of supply, in addition to the equipment.

"We are seeing a transformative change in the marine industry with the switch from oil based product to natural gas," says Quentin Stewart, Sales Manager, Ship Power, Wärtsilä North America.

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