bunkerage

bunker +‎ -age

bunkerage (uncountable)

1. (nautical) The act of bunkering (loading a vessel with oil or coal)
   • 1921, United States Fuel Administration, Final Report of the United States Fuel Administrator, 1917-1919:

     These agencies had been largely engaged in supplying coal for the bunkers of vessels sailing for foreign ports and had accumulated a considerable fund by reason of the fact that the bunkerage premium had been collected on all such coal

2. (nautical) Oil or coal used for the engine of a vessel
   • 18 October 2017, Italy busts gang smuggling Zawia diesel to Sicily in Libya Herald

     Gazzettinonline reported that the smuggled diesel was in fact low grade and normally used as bunkerage for ships.