VLCC freight index refers to the crude oil price index of global super-large cruise ship transportation. The calculation unit of the index is USD/barrel, that is, how much USD is needed to transport a barrel of crude oil. Investors generally speculate on the relationship between crude oil trade and crude oil supply and demand according to the changes of VLCC freight index, and some economists analyze and predict the changes of world trade and economy according to VLCC freight index.

The total freight rate index is calculated by weighted arithmetic average formula: where _ is the total freight rate index; K is a single index or class index of the price index of a certain kind of transportation business; P0 is the average freight rate of a certain type of transportation business in the base period; During the reporting period, Q 1 a certain traffic volume; ∑p0q 1 is the total operating income in the reporting period calculated by the base period freight rate.