Container Ship Emissions & Retrofit Radar

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

CII band distribution

1,079 at D/E

A 312B 412C 707D 598E 481

2,510 rated vessels · 443 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

'27 Q1

'27 Q2

'27 Q3

'27 Q4

115

'28 Q1

'28 Q2

'28 Q3

Windows estimated from the class-expiry docking model, not bookings.

Top eligible retrofit measures for this segment

Measure	Eligible	CO₂ reduction	Capex band	Payback	Confidence
Turbocharger cut-out	1,640	1–3%	€80k–250k	—	vendor claim
Propeller redesign / replacement	1,427	5–10%	€400k–1,200k	—	vendor claim
Bulbous bow reprofiling	1,330	2–6%	€300k–900k	—	vendor claim
Methanol dual-fuel conversion	933	5–15%	€8,000k–20,000k	—	vendor claim
LNG dual-fuel conversion	763	15–25%	€15,000k–35,000k	—	vendor claim
Shaft generator / PTO	348	3–6%	€500–1,500/kW	—	vendor claim

Capex bands are indicative vendor/literature priors. Payback appears once price parameters are configured.

Retrofit opportunity in this segment

623

D/E vessels with at least one eligible measure

€3,176–7,513M

capex range, top measure per vessel (623 of 623 with computable scaling)

1.44–2.55 Mt

annual CO₂ reduction available (vendor-claimed ranges × reported emissions)

Retrofit prospects — worst band first

Vessel	Band	Age	Drop year	Req. reduction 2030	Dock window
HANSA AFRICA · 25-60k	E	16y	2026	78%	Jan 2028
MSC ANNAMARIA · <25k	E	1y	2026	72%	Dec 2027
SEPELU · <25k	E	26y	2026	69%	Aug 2028
C LION · 100-200k	E	21y	2026	59%	Mar 2028
HAMBURG TRADER · <25k	E	21y	2026	55%	Feb 2027

See all 2,510 rated container ships with exposure and dock windows. Sign in →

Note: Container/ro-ro cargo ship vessels are excluded from this ranking — their CII type is a per-vessel flag-state determination, so no valid comparison metric exists for them.

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

2,076

vessels ranked

2.25

greenest (g CO₂/dwt·nm)

8.41

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
1	CMA CGM CAPE COD IMO 9938133	15,000 TEU	2024	366 m	Wärtsilä - 10X92DF	2.2	A
2	GDANSK EXPRESS IMO 9943877	23,660 TEU	2024	400 m	11G95ME-C10-GI	3.2	A
3	HAMBURG EXPRESS IMO 9943865	23,660 TEU	2024	400 m	11G95ME-C10-GI	3.3	A
4	OOCL FINLAND IMO 9922536	24,188 TEU	2020	400 m	CSSC-MES Diesel Co Ltd - China 12X92DF	3.3	A
5	MSC CALYPSO IMO 9932036	15,264 TEU	2023	366 m	Hyundai Heavy Industries Co Ltd - South Korea 11G90ME-C10-GI	3.3	A
6	HANOI EXPRESS IMO 9540132	23,660 TEU	2023	400 m	UnKnown 11G95ME-C10-GI	3.4	A
7	DAMIETTA EXPRESS IMO 9543108	23,660 TEU	2024	400 m	11G95ME-C10-GI	3.4	A
8	MSC ROME IMO 9964211	15,600 TEU	2024	366 m	Hyundai Heavy Industries Co. Ltd. 8G95ME-C10-GI-coEGR	3.5	A
9	SINGAPORE EXPRESS IMO 9543093	23,660 TEU	2024	400 m	11G95ME-C10-GI	3.5	A
10	BERLIN EXPRESS IMO 9540118	23,660 TEU	2023	400 m	UnKnown 11G95ME-C10-GI	3.5	A
11	OOCL ZEEBRUGGE IMO 9908140	24,000 TEU	2020	400 m	HSD Engine Co Ltd - South Korea 12X92	3.6	A
12	HMM ALGECIRAS IMO 9863297	23,964 TEU	2020	400 m	11G95ME-C10	3.6	A
13	MANILA EXPRESS IMO 9540120	23,660 TEU	2023	400 m	UnKnown 11G95ME-C10-GI	3.6	A
15	ONE INTEGRITY IMO 9933119	24,000 TEU	2023	400 m	MAN-B&W 9G95ME-C10	3.7	A
14	OOCL VALENCIA IMO 9922598	24,000 TEU	2020	400 m	CSSC-MES Diesel Co Ltd - China 12X92	3.7	A
16	HMM COPENHAGEN IMO 9863302	23,000 TEU	2020	400 m	11G95ME-C10	3.7	A
17	MSC PALERMO IMO 9964223	15,600 TEU	2024	366 m	Hyundai Heavy Industries Co. Ltd. 8G95ME-C10-GI-coEGR	3.7	A
18	OOCL FELIXSTOWE IMO 9922512	24,000 TEU	2020	400 m	CSSC-MES Diesel Co Ltd - China 12X92DF	3.7	A
19	ONE INGENUITY IMO 9933016	24,000 TEU	2023	400 m	MAN-B&W 9G95ME-C10	3.7	A
21	ONE FANTASTIC IMO 9936381	15,500 TEU	2023	366 m	UnKnown 8G95ME-C10	3.7	A
20	MSC MARIACRISTINA IMO 9968279	16,000 TEU	2024	366 m	9X92DF	3.7	A
22	OOCL GDYNIA IMO 9908102	24,188 TEU	2020	400 m	HSD Engine Co Ltd - South Korea 12X92DF	3.7	A
23	MSC CELESTINO MARESCA IMO 9930040	24,100 TEU	2023	400 m	UnKnown 11X92	3.8	A
24	OOCL PORTUGAL IMO 9922615	24,000 TEU	2020	400 m	12X92	3.8	A
25	HMM SOUTHAMPTON IMO 9868340	23,820 TEU	2020	400 m	MAN - 11G95ME-C9	3.8	A
26	OOCL TURKIYE IMO 9908138	24,000 TEU	2020	400 m	HSD Engine Co Ltd - South Korea 12X92	3.8	A
27	MSC ANITA IMO 9947146	16,000 TEU	2024	366 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 9X92-B-HPSCR	3.8	A
29	ONE TRUTH IMO 9773210	20,150 TEU	2017	400 m	Mitsui - 11G95ME-C9.5	3.8	A
28	HMM ROTTERDAM IMO 9868338	23,820 TEU	2020	400 m	MAN - 11G95ME-C9	3.8	A
31	ONE FUTURE IMO 9936393	15,500 TEU	2024	366 m	UnKnown 8G95ME-C10	3.9	A
30	CMA CGM SORBONNE IMO 9839210	23,000 TEU	2021	400 m	CSSC - 12X92DF	3.9	A
32	ONE INTELLIGENCE IMO 9933121	24,000 TEU	2020	400 m	MAN-B&W 9G95ME-C10	3.9	A
33	HMM DUBLIN IMO 9863314	23,000 TEU	2020	400 m	11G95ME-C10	3.9	A
34	ONE FORWARD IMO 9936422	15,500 TEU	2024	366 m	UnKnown 8G95ME-C10	3.9	A
35	HMM HAMBURG IMO 9863338	23,696 TEU	2020	400 m	HSD Engine Co. Ltd. 11G95ME.C10	3.9	A
37	BUSAN EXPRESS IMO 9540144	23,660 TEU	2024	400 m	UnKnown 11G95ME-C10-GI	3.9	A
36	OOCL SWEDEN IMO 9922603	24,000 TEU	2020	400 m	CSSC-MES Diesel Co Ltd - China 12X92	3.9	A
38	MSC THAIS IMO 9957347	15,600 TEU	2021	364 m	Hyundai Heavy Industries Co Ltd - South Korea 8G95ME-C10-GI-LPSCR	3.9	A
40	OOCL DENMARK IMO 9922548	24,188 TEU	2020	400 m	CSSC-MES Diesel Co Ltd - China 12X92DF	3.9	A
39	ONE TRUST IMO 9769283	20,100 TEU	2017	400 m	Doosan - 11G95ME-C9.2 (Tier II)	3.9	A
41	MSC MARIAGRAZIA IMO 9964194	15,600 TEU	2024	366 m	Hyundai Heavy Industries Co. Ltd. 8G95ME-C10-GI-coEGR	3.9	A
42	AL DAHNA EXPRESS IMO 9708825	19,870 TEU	2016	400 m	Hyundai - 10S90ME-C10	3.9	A
44	HMM LE HAVRE IMO 9868314	23,696 TEU	2020	400 m	11G95ME-C10	3.9	A
43	MSC ILARIA IMO 9962586	202,562	2024	366 m	MAN-B&W 8G95ME-C10	3.9	A
46	MSC RAYA IMO 9930052	24,100 TEU	2023	400 m	UnKnown 11X92	3.9	A
45	MAERSK CONAKRY IMO 9525285	4,500 TEU	2008	249 m	HHI - 6S80ME-C9	3.9	A
47	HMM STOCKHOLM IMO 9868352	23,820 TEU	2020	400 m	MAN - 11G95ME-C9	4.0	A
48	HMM GDANSK IMO 9863326	23,696 TEU	2020	400 m	11G95ME-C10	4.0	A
49	HMM HELSINKI IMO 9863340	23,696 TEU	2020	400 m	HSD Engine Co. Ltd. 11G95ME.C10	4.0	A
50	OOCL PIRAEUS IMO 9908097	23,000 TEU	2023	400 m	HSD Engine Co Ltd - South Korea 12X92DF	4.0	A

Page 1 of 41 — 2,034 vessels

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.