Container Ship CII

CII for container ships - feeder, Panamax, Neo-Panamax, Post-Panamax, ULCV. MEPC.353(78) container reference (a=1984, c=0.489). Lower c than bulker/tanker - required CII drops more slowly with capacity, so larger ships don't get a disproportionate advantage.

Ship typeContainer

Ship & voyage

DeadweightDWTFeeder 10-30k, Panamax 40-55k, Post-Panamax 70-100k, ULCV 170-230k.Distance / yearnmYear

Fuel

Modern ULCVs often dual-fuel LNG or methanol (CMA CGM, Maersk); others VLSFO + scrubber.

FuelMasst

Attained CII: 6.941g CO₂ / (dwt·nm)

Required CII: 6.645g CO₂ / (dwt·nm)

Rating: C

Moderate performance.

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{CII}_\text{required} = 1984 \cdot \text{DWT}^{-0.489} \cdot (1 - Z)

Symbol	Meaning	Unit
$DWT$	Deadweight	t
$Z$	Annual reduction	fraction

Source: IMO MEPC.353(78), MEPC.338(76) as amended by MEPC.400(83), and MEPC.354(78); World Shipping Council - container ship emissions factsheet

In short

CII rating for container ships - feeder, Panamax, Post-Panamax, ULCV - using the MEPC.353(78) container reference.

Learn the theory Container Ship Size Classes: Feeder to ULCV