2. Motorization technologies

2.1 Engine types and emissions reduction

The development of gas engines began in the 1980s for the propulsion of LNG carriers, using as fuel the gas produced by the evaporation of the LNG they were carrying (boil-off gas). Their application to other ships began in 2000 with a Norwegian ferry. For these ships, the LNG is extracted from the tanks and evaporated for injection into the engines.

Engine types include gas-only and dual-fuel diesel engines. Dual-fuel engines can run on LNG and diesel oil.

...