Cubic Capacity Correction (fcᵤbᵢc)

Chemical-tanker EEDI correction. High cargo-tank/DWT ratios mean DWT understates capacity; fcᵤbᵢc compensates so chemical carriers aren't unfairly penalised vs crude tankers.

IMODesignMEPC.1/Circ.866

Total cargo volumem³Sum of all cargo-tank volumes, 98 % loading.Design deadweightDWT

Volume / DWT ratio: 1.200

fcᵤbᵢc correction factor: 1.000

No correction - ratio at or below 1.7 threshold.

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

f_\text{cubic} = \max\left(1, \frac{V / \text{DWT}}{1.7}\right)

Symbol	Meaning	Unit
$f_\text{cubic}$	Correction multiplier
$V$	Total cargo volume	m³
$DWT$	Design deadweight	t

Source: IMO MEPC.1/Circ.866 (with revisions)

In short

Compute the indicative fcᵤbᵢc correction factor for chemical tankers under IMO MEPC.1/Circ.866.

Learn the theory BIMCO CII and Emissions Clauses