For non-LNG trades, changes in fuel and cargo quantities onboard are typically independent of one another. For LNG voyages, however, one of the fuels on board is also the cargo. Fuel transactions affect cargo quantities and vice versa.

The LNG module supports LNG shipping and trading workflows by linking LNG fuel and cargo tracking to help users calculate boil-off. In the Veson IMOS Platform (IMOS), LNG is entered as both a cargo and a fuel, and any changes to LNG (fuel) or LNG (cargo) quantities are updated in both.