Abstract
The history of bunker (Fuel of Marine Engine) was commenced for steam ships.Until that period, energy for marine power was wind only for sailing ships or human's own power of oars and etc.Modern shipping business in Japan begins only 100years ago following steam ships, and bunker was applied with solid fuel, coal.Develop-ment of marine engine, E.G.reciprocating steam engine was modified to Diesel Engine, which was the starting of transition in bunker, from solid to liquid fuel.Beginning in the early in1970s the rapid increase of oil prices in world pushed up the bunker cost of shipp-ing economy in Japan, and super low grade bunker oil is suppling to marine engine now.Development of technology to use these super low grade bunker oil is to be most important matter in future fuel situation of marine engine.
