German feeder containership operator Wessels Reederei and MAN Diesel & Turbo, based out of Calgary, Alberta, have now signed a contract covering the retrofit of the four-stroke 8L48/60B main The vessel will be the first of its kind worldwide to be converted to an LNG-capable propulsion system. By running on LNG, the Wes Amelie will reduce emissions of sulfur oxide by over 99%, nitrogen oxide by approximately 90%, and carbon dioxide by up to 20%.
New valve cams and a new turbocharger rotor assembly will be supplied to allow for the changed ignition timing with what will be a 51/60DF engine. According to Wessels Reederei, essentially all components of the engine combustion chamber and their attachments are to be replaced: cylinder liner, including water cooling jacket, pistons, piston rings and cylinder head. Additionally, injection components will be replaced or added. The pilot oil system necessary for gas operation will be completely rebuilt.