BDN & ROB Reconciliation

Reconcile bunker-delivered-note quantities with remaining-on-board figures to derive actual fuel consumed per leg - the IMO DCS and FuelEU MRV reporting basis.

VoyageBunkersMRV

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

F_\text{cons} = \text{ROB}_\text{start} + \text{BDN} - \text{ROB}_\text{end} - \text{Debunkered}

Symbol	Meaning	Unit
$F_\text{cons}$	Fuel consumed during the reporting period	t
$\text{ROB}_\text{start}$	Remaining on board at period start	t
$\text{BDN}$	Bunker-delivered-note quantity received	t
$\text{ROB}_\text{end}$	Remaining on board at period end	t
$\text{Debunkered}$	Fuel de-bunkered or transferred out	t

Source: IMO MEPC.282(70) - SEEMP Part II / DCS guidelines; EU MRV Regulation (EU) 2015/757

In short

Reconcile bunker-delivered-note and remaining-on-board mass balance to derive fuel consumed for IMO DCS and EU MRV reporting.

Learn the theory Bunker Quality and ISO 8217 Marine Fuel Standards