HomeCalculatorsMARPOL Annex VI - EEDI Required

MARPOL Annex VI - EEDI Required

Required EEDI for new-build ship per MEPC.281(70) - the baseline the designer must meet vs reference line.

EEDIMEPC.281Decarb

Ship typeDWTdwtEEDI phase

Reference line

4.36gCO₂/t·nm

Required EEDI

3.05gCO₂/t·nm

Formula, assumptions, and limits

Phase 3 30 % reduction from 2025 new builds. Container ships phased differently (15–50 % depending on size). Designer verifies via sea trial and correction factors.

Symbol legend

Symbol	Meaning	Unit	Source
	Segment reference coefficients	-	MEPC.281(70) Appendix
	Phase reduction factor	-	MEPC.281 Reg. 21