MARPOL Annex VI - EEXI Required Index

Required EEXI for a given ship type and DWT per MEPC.328(76) - the benchmark that every in-service ship (in-force 2023-01-01) must meet.

EEXIMEPC.328Decarb

Ship typeDWTdwt

EEDI reference line: 4.36gCO₂/t·nm

Required EEXI: 3.49gCO₂/t·nm

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

\text{EEXI}_{req} = a \cdot DWT^{-c} \cdot (1 - X)

Symbol	Meaning	Unit
$a, c$	Segment-specific coefficients
$DWT$	Deadweight	dwt

Source: MEPC.328(76) + MEPC.364(79)

In short

Required EEXI for a given ship type and DWT per MEPC.

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