HomeCalculatorsEEDI Required - the phase-reduced target

EEDI Required - the phase-reduced target

Look up the Required EEDI for a newbuild: ship-type reference line reduced by the phase factor per MEPC.328(76).

IMODesignMEPC.328(76)

Ship typeCapacityDWTPhasePhase reduction factor%Auto-filled from the ship type + capacity + phase. Override if you have a more specific figure.

Reference line

4.357gCO₂ / t·nm

a × Capacity^(−c) per MEPC.328(76) Table 1

Required EEDI

3.050gCO₂ / t·nm

Reference × (1 − 30 %)

Formula, assumptions, and limits

Required EEDI = a × Capacity^(−c) × (1 − Z)

Z values: 0 % Phase 0 (2013–14), 10 % Phase 1 (2015–19), 20–30 % Phase 2 (2020–24), 5–50 % Phase 3 (contracted ≥ 1 April 2022) - exact value depends on ship type AND size band per MEPC.328(76) Table 1.