MABUX World Bunker Index (consists of a range of prices for 380 HSFO, VLSFO and MGO (Gasoil) in the main world hubs) fell slightly on Aug.21: 380 HSFO – USD/MT – 309.37 (-0.55) VLSFO – USD/MT – 364.00 (-3.00) MGO – USD/MT – 443.24 (-2.33) Meantime, world oil indexes dropped on Aug.21 as the economic …