TOTE Maritime Alaska has contracted MAN PrimeServ – MAN Diesel & Turbo’s after-sales division – to convert North Star and Midnight Sun to dual-fuel operation on liquefied natural gas (LNG). The roro vessels will be retrofitted to MAN 58/64 retrofit units. The contract – signed in April 2017 and announced during the High Horsepower Summit, a conference and expo on the use of natural gas – covers the design, development and testing of a first-of-its-kind dual-fuel kit, which will serve as foundation for the largest LNG conversion in North America.
A key influence in TOTE’s decision to retrofit the vessels to LNG is to significantly reduce the most harmful emissions that result from burning diesel. “TOTE Maritime Alaska is excited to convert its fleet to LNG power which will result in a significant reduction in air emissions including particulate matter, sulphur oxide and nitrogen oxide. This significant investment of time and money is a reflection of our commitment to the environment, our customers and the state of Alaska” noted TOTE Maritime Alaska president Michael Noone.
MAN PrimeServ Augsburg head of upgrades and retrofits, Dr Thomas Spindler explained “To meet TOTE’s requirements, we have developed a solution based on our well-proven 51/60DF retrofit. Accordingly, the engineering approach to the 58/64 retrofit is very familiar to us, and this project represents a straightforward conversion procedure.”
Dr Spindler added “The investment will be of huge benefit to the customer on several fronts: not only will the retrofitted engines meet all new emission standards; the new components they receive during conversion will significantly extend their working life.”