Some clients load, transport, and discharge LNG as cargo while also consuming LNG on the same voyage when loading, sailing, discharging, and performing other in-port activities.
Regardless of which Bunker Calculation Method being used (FIFO, LIFO, AVE, TBM), the m3 quantity of LNG that is loaded and discharged will not impact the Voyage Bunker Expenses calculations for consumption or price of Voyage End Bunkers since it is not actively being consumed.
The m3 quantities that will be allocated to the voyage as expenses will be the initial quantities from voyage commencement and burning of any additional LNG excluded from the loaded/discharged quantities.
For more information on bunker expense allocation, please reference the IMOS - Allocating Expenses to a Voyage article found in the IMOS - Operations section of the Knowledge Base.
LNG ROB and Heel Pricing on Consecutive Voyages
While loaded and discharged LNG cargo quantities do not affect bunker expense calculations, the Discharge Port Price and Calorific Value (CV) do affect how LNG remaining onboard is priced.
When an LNG voyage completes, the Discharge Port Price and CV are applied to the LNG ROB and heel. On a consecutive voyage, these values transfer to the Initial Price and Initial CV fields. As a result, any BOG consumed as LNG fuel on the subsequent voyage (for example, during the ballast leg) is valued at the Discharge Port Price/CV from the previous voyage, not the original lifting price.
This pricing transfer can have a significant impact on voyage P&L, particularly when the Discharge Port Price differs substantially from the price at which the LNG was originally loaded. To review or override the initial LNG price on a consecutive voyage, open Voyage Bunkers and check the LNG Detail tab.