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 %)

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{EEDI}_\text{required} = a \cdot \text{Capacity}^{-c} \cdot (1 - Z)

Symbol	Meaning	Unit
$\text{EEDI}_\text{required}$	Maximum allowed attained EEDI	g CO₂ / (t·nm)
$a$	Ship-type reference constant
$c$	Ship-type reference exponent
$Capacity$	DWT (cargo) or GT (passenger/cruise)	DWT or GT
$Z$	Phase reduction factor	fraction

Source: IMO MEPC.328(76); IMO MEPC.231(65)

In short

Look up the Required EEDI for a newbuild ship - reference line reduced by phase factor Z under IMO MEPC.328(76).

Learn the theory BIMCO CII and Emissions Clauses