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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.

Segment rank (2024)
#1,750 of 2,098 container ships
CO₂ intensity
16.2 g CO₂/dwt·nm
vs segment average (10.39)
+56% higher
E
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
1701 MARINA L
IMO 9431331
 1,300 TEU 2009
15.1
E
1702 MEDKON ANKA
IMO 9366469
 1,147 TEU 2007
15.1
E
1703 GRANDE GHANA
IMO 9343168
 1,318 TEU 2009
15.1
E
1704 MSC PALATIUM III
IMO 9336165
 2,500 TEU 2006
15.1
E
1705 AS SABRINA
IMO 9387463
 1,700 TEU 2006
15.1
E
1706 DETTIFOSS
IMO 9822853
 2,150 TEU 2020
15.2
E
1707 CONTSHIP SEA
IMO 9306213
 1,574 TEU 2007
15.2
E
1708 MANDO
IMO 9175705
 1,174 TEU 1999
15.2
E
1709 CELSIUS NEW ORLEANS
IMO 9412842
 1,577 TEU 2007
15.3
E
1710 BG GREEN
IMO 9964613
 1,400 TEU 2021
15.3
E
1711 TUKUMA ARCTICA
IMO 9822865
 2,150 TEU 2020
15.3
E
1712 MSC IRA II
IMO 9323493
 1,732 TEU 2007
15.3
E
1713 ANNALISA P
IMO 9437141
 1,284 TEU 2008
15.3
E
1714 RUTH BORCHARD
IMO 9212034
 1,216 TEU 2000
15.3
E
1715 GRANDE BRASILE
IMO 9198123
 1,302 TEU 2000
15.4
E
1716 EAGLE II
IMO 9301122
 1,300 TEU 2006
15.4
E
1717 DOUCE FRANCE
IMO 9845661
 2,200 TEU 2020
15.5
E
1718 GRANDE AMBURGO
IMO 9246607
 1,321 TEU 2003
15.5
E
1719 SPIRIT OF CHENNAI
IMO 9813840
 1,162 TEU 2019
15.5
E
1720 JOST
IMO 9477347
 1,350 TEU 2010
15.5
E
1721 VERA D
IMO 9290177
 1,683 TEU 2004
15.5
E
1722 GRANDE NIGERIA
IMO 9246580
 1,321 TEU 2003
15.5
E
1723 GRANDE ATLANTICO
IMO 9130951
 1,302 TEU 1999
15.6
E
1724 MSC PAXI II
IMO 9256391
 1,400 TEU 2004
15.6
E
1725 JONNI RITSCHER
IMO 9333383
 1,856 TEU 2006
15.6
E
1726 CMA CGM FORT ST PIERRE
IMO 9261891
 2,226 TEU 2003
15.6
E
1727 SONDERBORG
IMO 9454242
 1,085 TEU 2012
15.7
E
1728 ELBELLA
IMO 9312640
 1,740 TEU 2006
15.7
E
1729 MSC AMY
IMO 9242651
 1,768 TEU 2002
15.7
E
1730 NORDIC ISTRIA
IMO 9474383
 1,085 TEU 2011
15.7
E
1731 DANIEL A
IMO 9238064
 1,208 TEU 2001
15.8
E
1732 CMA CGM SINNAMARY
IMO 9845673
 2,200 TEU 2020
15.8
E
1733 GARWOOD
IMO 9347255
 1,819 TEU 2008
15.8
E
1734 AYDOGAN
IMO 9149897
 1,726 TEU 1999
15.9
E
1735 GRANDE SAN PAOLO
IMO 9253208
 1,321 TEU 2003
15.9
E
1736 CONTSHIP DAY
IMO 9509786
 1,496 TEU 2010
15.9
E
1737 GRANDE GUINEA
IMO 9437919
 800 TEU 2010
15.9
E
1738 KARLA A
IMO 9297577
 1,676 TEU 2003
15.9
E
1739 MSC NITA
IMO 9084607
 1,512 TEU 1996
15.9
E
1740 GRANDE BENIN
IMO 9343170
 800 TEU 2009
16.0
E
1741 GRANDE SENEGAL
IMO 9377470
 800 TEU 2010
16.0
E
1742 GERDA
IMO 9432232
 1,425 TEU 2009
16.1
E
1743 GRANDE CONGO
IMO 9437921
 800 TEU 2010
16.1
E
1744 MOLIVA
IMO 9454034
 951 TEU 2014
16.1
E
1745 AS SELINA
IMO 9516789
 1,740 TEU 2012
16.1
E
1746 GRANDE EUROPA
IMO 9138381
 712 TEU 1998
16.1
E
1747 TAMANRASSET
IMO 9760615
 1,730 TEU 2017
16.1
E
1748 GRANDE CAMEROON
IMO 9377482
 800 TEU 2010
16.1
E
1749 REPUBBLICA ARGENTINA
IMO 9138410
 1,500 TEU 1998
16.2
E
1750 CMA CGM GULF EXPRESS
IMO 9239874
 1,679 TEU 2002
16.2
E
Page 35 of 42 — 2,098 vessels
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Engine intelligence

Which engines power the greenest fleets?

The main engine is the single largest CO₂ source on board — typically well over 80% of a ship's emissions come from propulsion. We aggregated this ranking the other way around: every engine design is scored by the measured carbon intensity of the vessels carrying it, licensee-built units merged under their design brand. The verdict from the 2024 data — modern dual-fuel designs like MAN B&W's ME-GI and WinGD's X-DF families, together with EGR/SCR-abated and ultra-long-stroke G-type engines, consistently power the most emission-friendly ships in service.

Emission-friendly engine ranking

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.