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Most Emission-Efficient Container Ships

Ships ranked by AER (Annual Efficiency Ratio) — grams of CO₂ emitted per tonne of deadweight carried one nautical mile (g CO₂/dwt·nm), the IMO carbon-intensity metric behind the CII rating — from official EU MRV emissions data for reporting year 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo
Sort 🌱 Greenest first 🔧 Least efficient first — retrofit candidates
Size (TEU)
All sizes < 3,000 TEU 3k – 8k TEU 8k – 14k TEU > 14,000 TEU
Year
2025 2024
2,141
vessels ranked
2.25
greenest (g CO₂/t·nm)
8.58
segment median
# Vessel Size (TEU) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
1 CMA CGM CAPE COD
IMO 9938133
 15,000 TEU 2024
2.2
A
2 GDANSK EXPRESS
IMO 9943877
 23,660 TEU 2024
3.2
A
3 HAMBURG EXPRESS
IMO 9943865
 23,660 TEU 2024
3.3
A
4 OOCL FINLAND
IMO 9922536
 24,188 TEU 2024
3.4
A
5 HANOI EXPRESS
IMO 9540132
 23,660 TEU 2023
3.4
A
6 DAMIETTA EXPRESS
IMO 9543108
 23,660 TEU 2024
3.4
A
7 MSC ROME
IMO 9964211
 15,600 TEU 2024
3.5
A
8 SINGAPORE EXPRESS
IMO 9543093
 23,660 TEU 2024
3.5
A
9 BERLIN EXPRESS
IMO 9540118
 23,660 TEU 2023
3.5
A
10 OOCL ZEEBRUGGE
IMO 9908140
 24,000 TEU 2020
3.6
A
11 HMM ALGECIRAS
IMO 9863297
 23,000 TEU 2020
3.6
A
12 OOCL FELIXSTOWE
IMO 9922512
 23,000 TEU 2023
3.6
A
13 MANILA EXPRESS
IMO 9540120
 23,660 TEU 2023
3.6
A
15 OOCL VALENCIA
IMO 9922598
 24,000 TEU 2020
3.7
A
14 ONE INTEGRITY
IMO 9933119
 24,000 TEU 2023
3.7
A
16 HMM COPENHAGEN
IMO 9863302
 23,000 TEU 2020
3.7
A
17 MSC PALERMO
IMO 9964223
 15,600 TEU 2024
3.7
A
18 OOCL GDYNIA
IMO 9908102
 24,188 TEU 2023
3.7
A
19 ONE INGENUITY
IMO 9933016
 24,000 TEU 2023
3.7
A
21 MSC MARIACRISTINA
IMO 9968279
 16,000 TEU 2025
3.7
A
20 ONE FANTASTIC
IMO 9936381
 15,500 TEU 2023
3.7
A
22 MSC CALYPSO
IMO 9932036
 15,264 TEU 2023
3.7
A
23 MSC CELESTINO MARESCA
IMO 9930040
 24,100 TEU 2023
3.8
A
24 OOCL PORTUGAL
IMO 9922615
 24,000 TEU 2024
3.8
A
25 HMM SOUTHAMPTON
IMO 9868340
 23,000 TEU 2020
3.8
A
28 OOCL TURKIYE
IMO 9908138
 23,000 TEU 2023
3.8
A
26 MSC ANITA
IMO 9947146
 16,000 TEU 2024
3.8
A
27 ASTRID MAERSK
IMO 9948750
 14,942 TEU 2021
3.8
A
30 ONE TRUTH
IMO 9773210
 20,150 TEU 2017
3.8
A
29 HMM ROTTERDAM
IMO 9868338
 23,000 TEU 2020
3.8
A
32 CMA CGM SORBONNE
IMO 9839210
 22,448 TEU 2021
3.9
A
31 ONE FUTURE
IMO 9936393
 15,500 TEU 2024
3.9
A
33 ONE INTELLIGENCE
IMO 9933121
 24,000 TEU 2023
3.9
A
35 ONE FORWARD
IMO 9936422
 15,500 TEU 2024
3.9
A
34 HMM DUBLIN
IMO 9863314
 23,000 TEU 2020
3.9
A
36 HMM HAMBURG
IMO 9863338
 23,000 TEU 2020
3.9
A
37 BUSAN EXPRESS
IMO 9540144
 23,660 TEU 2024
3.9
A
38 ALEXANDRA MAERSK
IMO 9948786
 16,592 TEU 2024
3.9
A
39 MSC THAIS
IMO 9957347
 15,600 TEU 2021
3.9
A
40 OOCL DENMARK
IMO 9922548
 24,188 TEU 2020
3.9
A
41 ONE TRUST
IMO 9769283
 20,170 TEU 2017
3.9
A
43 AL DAHNA EXPRESS
IMO 9708825
 18,691 TEU 2016
3.9
A
42 MSC MARIAGRAZIA
IMO 9964194
 15,600 TEU 2024
3.9
A
45 HMM LE HAVRE
IMO 9868314
 23,000 TEU 2020
3.9
A
44 MSC ILARIA
IMO 9962586
 202,562 2024
3.9
A
46 MAERSK CONAKRY
IMO 9525285
 4,500 TEU 2011
3.9
A
47 MSC RAYA
IMO 9930052
 24,100 TEU 2023
3.9
A
49 HMM STOCKHOLM
IMO 9868352
 23,000 TEU 2020
4.0
A
48 OOCL SWEDEN
IMO 9922603
 24,000 TEU 2024
4.0
A
50 HMM GDANSK
IMO 9863326
 23,000 TEU 2020
4.0
A
Page 1 of 42 — 2,098 vessels
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AER (Annual Efficiency Ratio) = annual CO₂ emissions ÷ (deadweight × distance sailed), the IMO carbon-intensity metric used for CII ratings. It is built only from measured CO₂, distance and deadweight — not the self-reported cargo transport-work figure, which is unreliable. Implausible outliers (top 2% per segment) are excluded. Grade A–E reflects each vessel's rank within its segment. Source: EMSA THETIS-MRV.