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)

#602 of 2,221 container ships

CO₂ intensity

5.8 g CO₂/dwt·nm

vs segment average (9.9)

-41% 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
601	MAERSK COPENHAGEN IMO 9525405	4,500 TEU	2008	249 m	HHI - 6S80ME-C9	5.8	B
602	MSC REEF IMO 9754965	19,224 TEU	2016	398 m	Doosan - 11G95ME-C9.2	5.8	B
603	CAPE SOUNIO IMO 9727625	11,010 TEU	2017	330 m	Hyundai - 8G95ME-C9	5.8	B
604	TAYMA EXPRESS IMO 9525895	13,296 TEU	2012	366 m	Doosan - 12K98MC-C	5.8	B
605	MSC CLORINDA IMO 9484429	14,036 TEU	2012	366 m	Doosan - 12K98MC-C	5.8	B
606	CMA CGM URAL IMO 9705079	9,200 TEU	2015	300 m	Hyundai - 9S90ME-C9	5.8	B
608	CSCL URANUS IMO 9467304	14,074 TEU	2012	366 m	MAN - 12K98ME-C	5.8	B
607	MSC MUMBAI VIII IMO 9294991	8,814 TEU	2005	332 m	MAN - 12K98ME-C	5.8	B
610	CMA CGM GANGES IMO 9718117	10,000 TEU	2013	300 m	MAN - 9S90ME-C9	5.9	B
609	MH PERSEUS IMO 9967433	7,092 TEU	2021	272 m	CSSC-MES Diesel Co Ltd - China 7G80ME-C10-HPSCR	5.9	B
611	MSC NAIROBI X IMO 9605243	9,403 TEU	2013	300 m	Hyundai - 9S90ME-C9	5.9	B
612	COSCO NETHERLANDS IMO 9516430	13,386 TEU	2008	366 m	MAN - 12K98ME7	5.9	B
613	MAERSK SAN LAZARO IMO 9717216	10,600 TEU	2015	331 m	MAN - 7S90ME-C10	5.9	B
615	ELEONORA MAERSK IMO 9321500	11,000 TEU	2004	399 m	Doosan - DOOSAN-SULZER 14RT-FLEX96C	5.9	B
614	EMMA MAERSK IMO 9321483	11,000 TEU	2004	398 m	Wärtsilä - 14RT-flex96C	5.9	B
617	CMA CGM ZEPHYR IMO 9882487	15,000 TEU	2021	366 m	Hyundai Heavy Industries Co Ltd - South Korea 10X92	5.9	B
616	COPIAPO IMO 9687526	8,714 TEU	2014	300 m	MAN - 8S90ME-C	5.9	B
619	MAERSK GIBRALTAR IMO 9739692	10,100 TEU	2016	337 m	CSSC - 10S90ME-C9	5.9	B
618	EVER TOP IMO 9665619	13,806 TEU	2014	368 m	MAN - 11S90ME-C9	5.9	B
620	APL COLUMBUS IMO 9597525	9,200 TEU	2010	328 m	Doosan - 10S90ME-C MK9.2 TIER 2	5.9	B
621	MSC EMMA IMO 9463047	10,000 TEU	2011	366 m	MAN - 12K98MC	5.9	B
622	CMA CGM FORT BOURBON IMO 9966752	7,600 TEU	2024	268 m	MAN-B&W 6G80ME-C10-GI	5.9	B
623	ONE RESILIENCE IMO 9952751	7,000 TEU	2024	272 m	Hanwha Engine Co Ltd - South Korea 7G80ME-C10-HPSCR	5.9	B
625	LEONIDIO IMO 9618587	4,957 TEU	2014	255 m	STX - 8K90MC-C	5.9	B
624	MSC FLAVIA IMO 9467433	12,400 TEU	2012	366 m	MAN - 12K98MC-C	5.9	B
626	CAPE AKRITAS IMO 9706190	11,010 TEU	2016	330 m	Hyundai - 8G95ME-C9	6.0	B
628	CAPE KORTIA IMO 9727613	11,010 TEU	2017	330 m	Hyundai - 8G80ME-C9	6.0	B
627	MSC JOSSELINE IMO 9842061	15,000 TEU	2019	366 m	Wärtsilä - 10X92	6.0	B
630	ONE CONTINUITY IMO 9388352	8,102 TEU	2008	320 m	Mitsui - 11K98MC	6.0	B
632	MSC BETTINA IMO 9399038	13,798 TEU	2010	366 m	Doosan - 12K98MC-C	6.0	B
629	MSC ALINA IMO 9695016	9,000 TEU	2013	300 m	HHI - W9X82	6.0	B
631	MAERSK GUAYAQUIL IMO 9727871	10,100 TEU	2015	337 m	MAN - 10S90ME-C9	6.0	B
637	MSC KANOKO IMO 9842102	14,272 TEU	2019	366 m	Wärtsilä - 10X92	6.0	B
636	CMA CGM THALASSA IMO 9356294	11,000 TEU	2008	347 m	MAN - 12K98ME-C	6.0	B
635	CAPE TAINARO IMO 9706205	11,010 TEU	2017	330 m	Hyundai - 8G95ME-C9	6.0	B
634	MAERSK SAN VINCENT IMO 9717228	10,600 TEU	2015	331 m	MAN - 7S90ME-C10	6.0	B
633	GSL CHRISTEL ELISABETH IMO 9280641	5,770 TEU	2004	277 m	Hyundai - 10 K 98 MC-C	6.0	B
638	CMA CGM PHOENIX IMO 9597501	9,200 TEU	2010	328 m	Doosan - 10S90ME-C MK9.2 TIER 2	6.0	B
639	EUGEN MAERSK IMO 9321550	11,000 TEU	2004	399 m	Wärtsilä - 14RT-flex96C	6.0	B
641	MSC EUGENIA IMO 9785469	11,500 TEU	2022	328 m	MAN - 8G95ME-C9	6.0	B
640	EDITH MAERSK IMO 9321548	11,000 TEU	2004	398 m	Doosan - DOOSAN-SULZER 14RT-FLEX96C	6.0	B
643	MSC TERESA IMO 9469560	14,036 TEU	2011	366 m	MAN - 12K98MC-C	6.0	B
642	EVER FAITH IMO 9850525	12,000 TEU	2018	334 m	Wärtsilä - 9X92	6.0	B
644	VUNG TAU EXPRESS IMO 9767998	10,100 TEU	2018	336 m	CSSC - 10S90ME-C9	6.0	B
645	MSC ALANYA IMO 9785483	11,500 TEU	2021	328 m	Doosan - 8G95ME-C9	6.0	B
649	OOCL BREMERHAVEN IMO 9979254	5,920 TEU	2021	255 m	MAN-B&W 6G80ME-C10	6.1	B
648	SAN FERNANDO IMO 9698642	8,700 TEU	2015	300 m	MAN - 9S90ME-C9	6.1	B
647	ONE ALTAIR IMO 9468308	9,592 TEU	2010	332 m	Wärtsilä - 11RT-flex96C	6.1	B
646	MSC BERYL IMO 9467392	12,400 TEU	2010	366 m	MAN - 12K98MC-C	6.1	B
650	CARTAGENA EXPRESS IMO 9777618	10,589 TEU	2017	333 m	MAN - 7S90ME-C9	6.1	B

Page 13 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.