Cruise Ship CII

CII for passenger cruise ships. MEPC.337 cruise reference (a=930, c=0.383), GT-based. Highest hotel load in the fleet - the CII denominator is GT (not pax) but the numerator covers every MW of on-board entertainment, HVAC, laundry, galley.

Ship typeCruise

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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{CII}_\text{required} = 930 \cdot \text{GT}^{-0.383} \cdot (1 - Z)

Symbol	Meaning	Unit
$GT$	Gross tonnage
$Z$	Annual reduction	fraction

Source: IMO MEPC.337/338/339(76); CLIA - cruise industry environmental report

In short

CII for cruise ships using the MEPC.337 cruise reference (a=930, c=0.383), GT-based.

Learn the theory Specialised Ship Types: Ro-ro, Reefer, Heavy-Lift