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)

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This calculator requires JavaScript to compute its 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)

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