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 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2025)

#334 of 2,221 container ships

CO₂ intensity

4.7 g CO₂/dwt·nm

vs segment average (9.9)

-52% greener

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

2,208

vessels ranked

2.88

greenest (g CO₂/dwt·nm)

8.26

segment median

#	Vessel	Size (TEU)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
301	MSC VENICE IMO 9647473	16,000 TEU	2016	399 m	STX - 12K98MC-C	4.7	A
302	MUMBAI MAERSK IMO 9780471	19,630 TEU	2015	399 m	Doosan - 7G80ME-C9	4.7	A
305	MSC DARIA IMO 9927287	14,812 TEU	2023	366 m	Hyundai Heavy Industries Co Ltd - South Korea 11G90ME-C10-GI	4.7	A
304	YM WORTH IMO 9704635	14,080 TEU	2015	368 m	MAN - 11S90ME-C9	4.7	A
303	ONE RELIABILITY IMO 9952737	7,000 TEU	2024	272 m	Hanwha Engine Co Ltd - South Korea 7G80ME-C10-HPSCR	4.7	A
306	APL MERLION IMO 9632014	17,292 TEU	2014	398 m	MAN - 11S90ME-C9	4.7	A
307	HMM RAON IMO 9869215	14,000 TEU	2021	366 m	MAN - 9G95ME-C10	4.7	A
308	ONE FRIENDSHIP IMO 9934369	15,000 TEU	2023	366 m	Hyundai Heavy Industries Co. Ltd. 8G95ME-C10-EGRTC	4.7	A
310	ZENITH LUMOS IMO 9864215	15,000 TEU	2020	366 m	Wärtsilä - 10X92	4.7	A
309	SALAHUDDIN IMO 9708796	14,993 TEU	2015	369 m	MAN - 9S90ME-C10	4.7	A
316	MSC LE HAVRE IMO 9975583	101,078	2025	272 m	MAN-B&W 6G80ME-C10-GI	4.7	A
315	HMM DREAM IMO 9637222	13,154 TEU	2014	366 m	Doosan - 10S90ME-C9	4.7	A
314	MSC INSA IMO 1016666	139,641	2025	335 m	MAN-B&W 6G90ME-C10-GI	4.7	A
313	COSCO SHIPPING CAPRICORN IMO 9783514	19,150 TEU	2018	400 m	MAN - 11S90ME-C10	4.7	A
312	HYUNDAI SATURN IMO 9725146	10,055 TEU	2016	324 m	MAN - 9G80ME-C9	4.7	A
311	CMA CGM INNOVATION IMO 9951525	7,600 TEU	2023	268 m	MAN-B&W 7G80ME-C10-GI	4.7	A
317	COSCO SHIPPING LIBRA IMO 9783538	20,038 TEU	2018	400 m	CSSC - 11S90ME-C10	4.7	A
319	METTE MAERSK IMO 9632155	18,000 TEU	2011	399 m	Doosan - 8S80ME-C9	4.7	A
318	MSC MICHELLE IMO 9897016	23,656 TEU	2021	400 m	Doosan - 9L32/40CD	4.7	A
323	EVER ALLY IMO 9975791	24,004 TEU	2022	400 m	WinGD 11X92-B	4.7	A
322	MERETE MAERSK IMO 9632064	18,270 TEU	2011	399 m	Doosan - 7S80ME-C	4.7	A
324	AL MURABBA IMO 9708837	15,000 TEU	2015	369 m	MAN - 9S90ME-C10	4.7	A
321	YM TUTORIAL IMO 9792618	11,714 TEU	2015	334 m	Mitsui Engineering & Shipbuilding Co. Ltd. 9S90ME-C10	4.7	A
320	MSC CAMEROON IMO 9974498	8,300 TEU	2025	260 m	Hyundai Heavy Industries Co. Ltd. 7G80ME-C10-coEGR	4.7	A
325	SEASPAN BELLWETHER IMO 9713363	10,100 TEU	2015	337 m	MAN - 10S90ME-C9	4.7	A
327	MSC IRENE IMO 9399040	13,798 TEU	2010	366 m	MAN - 12K98MC-C	4.7	A
328	CMA CGM LOUIS BLERIOT IMO 9776432	20,954 TEU	2018	400 m	Hyundai - 11X92	4.7	A
326	CMA CGM HERMES IMO 9882499	15,000 TEU	2021	366 m	Hyundai - 10X92	4.7	A
330	MSC BENIN IMO 9974565	8,100 TEU	2025	260 m	Hyundai Heavy Industries Co. Ltd. 7G80ME-C10-coEGR	4.7	A
329	MAERSK HAMBURG IMO 9784312	15,226 TEU	2015	353 m	Hyundai - 8G95ME-C9	4.7	A
333	OOCL HONG KONG IMO 9776171	21,413 TEU	2015	400 m	Doosan - 11G95ME-C9	4.7	A
332	YM WONDROUS IMO 9684677	14,080 TEU	2015	368 m	MAN - 11S90ME-C9	4.7	A
331	CMA CGM KIMBERLEY IMO 9894973	15,000 TEU	2021	366 m	CSSC-MES Diesel Co. Ltd. 10X92DF	4.7	A
336	MARIBO MAERSK IMO 9619969	18,270 TEU	2011	399 m	Doosan - 8S80ME-C MK9.2	4.8	A
335	COSCO SHIPPING SAGITTARIUS IMO 9783473	20,038 TEU	2018	400 m	MAN - 11S90ME-C10	4.8	A
337	ONE MUNCHEN IMO 9706750	13,870 TEU	2015	366 m	MAN - 11S90ME-C9	4.8	A
334	YM WHOLESOME IMO 9704611	14,080 TEU	2015	368 m	MAN - 11S90ME-C9	4.8	A
339	EVER ACME IMO 9943267	24,000 TEU	2022	400 m	CSSC-MES Diesel Co Ltd - China 11X92-B	4.8	A
338	MSC IVANA IMO 9398371	11,668 TEU	2008	364 m	MAN - 12K98ME	4.8	A
340	APL MIAMI IMO 9597549	9,200 TEU	2010	328 m	Doosan - DOOSAN-MAN 10S90ME-C9.2	4.8	A
341	YM TRAVEL IMO 9878503	11,714 TEU	2015	334 m	MAN - 9S90ME-C10	4.8	A
342	MSC TAYLOR IMO 9932048	15,264 TEU	2023	366 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11G90ME-C10-GI	4.8	A
343	EVER ARIA IMO 9909132	24,004 TEU	2019	400 m	CSSC-MES Diesel Co Ltd - China 11X92	4.8	A
347	CMA CGM CAPE COD IMO 9938133	15,000 TEU	2024	366 m	Wärtsilä - 10X92DF	4.8	A
346	SAN RAPHAEL MAERSK IMO 9622253	9,669 TEU	2014	333 m	HHI - 7S90-C9.2	4.8	A
345	ONE RECOMMENDATION IMO 9952713	7,000 TEU	2024	272 m	Hanwha Engine Co Ltd - South Korea 7G80ME-C10-HPSCR	4.8	A
344	OOCL SCANDINAVIA IMO 9776212	21,413 TEU	2015	400 m	Doosan - 11G95ME-C9	4.8	A
350	AL JMELIYAH IMO 9732357	14,993 TEU	2017	368 m	Hyundai - 9S90ME-C10	4.8	A
349	YM WITNESS IMO 9704609	14,080 TEU	2015	368 m	MAN - 11S90ME-C9	4.8	A
348	MAERSK CANYON IMO 9924235	15,500 TEU	2020	366 m	MAN - 9G95ME-C10	4.8	A

Page 7 of 44 — 2,163 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 2025 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.