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)

#1,233 of 2,221 container ships

CO₂ intensity

8.9 g CO₂/dwt·nm

vs segment average (9.9)

-10% 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
1201	LUNA MAERSK IMO 9190781	4,045 TEU	2002	266 m	Doosan - 10K90MC	8.8	C
1202	MSC INDIA IMO 9231248	5,762 TEU	2002	277 m	MAN - 12 K 90 MC	8.8	C
1203	VOLGA MAERSK IMO 9775749	3,700 TEU	2018	200 m	STX - 6G60ME-C9	8.8	C
1204	MSC FOLEGANDROS VI IMO 9247560	5,576 TEU	2001	279 m	Mitsui - 10K98MC-VI	8.8	C
1205	LAUST MAERSK IMO 9190743	4,045 TEU	2001	266 m	Doosan - 10K90MC	8.8	C
1206	MSC DELHI II IMO 9347255	1,819 TEU	2008	186 m	Hyundai - 6 L70MC-C	8.8	C
1207	MSC ANSHIKA VI IMO 9254848	5,500 TEU	2003	275 m	Hyundai - 10K90MC-C	8.8	C
1208	NYK METEOR IMO 9337638	4,888 TEU	2007	294 m	MAN - 9K98MC-C	8.8	C
1209	MSC LEIGH IMO 9320439	4,870 TEU	2006	275 m	MAN - 7K98MC-C	8.8	C
1210	MAERSK NOMAZWE IMO 9294381	4,045 TEU	2004	266 m	Sulzer - 8RT-flex96C	8.8	C
1211	MSC ANTONIA IMO 9398216	6,969 TEU	2009	304 m	MAN - 10K98MC-C	8.8	C
1212	GARDINER IMO 9275048	2,544 TEU	2003	210 m	Sulzer - 7RTA72U-B	8.8	C
1213	MSC SENA IMO 9116369	2,825 TEU	1996	202 m	Hyundai - 8 K 80 MC-C	8.8	C
1214	MSC DONATA IMO 9237151	4,132 TEU	2002	258 m	Sulzer - 9RTA84C	8.8	C
1215	MSC RONIT R IMO 9293167	4,931 TEU	2005	294 m	Sulzer - 9RTA96C	8.8	C
1216	MSC NEDERLAND III IMO 8918954	3,007 TEU	1992	237 m	BREMER VULKAN AG SCHIFFBAU UND MASCHINENFABRIK 7 L 80 MC	8.8	C
1217	MAERSK DURBAN IMO 9299044	2,478 TEU	2005	208 m	Hitachi - 7 L 70 MC-C- MK7	8.8	C
1218	MSC NURIA IMO 9349825	4,870 TEU	2008	275 m	MAN - 7K98MC-C	8.8	C
1219	CHIQUITA HARVESTER IMO 9976226	1,747 TEU	2024	172 m	MAN-B&W 6S60ME-C10	8.8	C
1220	MAERSK GARONNE IMO 9235579	4,318 TEU	2003	292 m	Hyundai - 10K90MC-C-MKV	8.9	C
1221	IONIKOS IMO 9397614	4,360 TEU	2009	260 m	MAN - 8K90MC-C	8.9	C
1222	MAERSK GIRONDE IMO 9235555	4,318 TEU	2002	292 m	Hyundai - 10K90MC-C MK5	8.9	C
1223	BROOKLYN BRIDGE IMO 9458999	4,432 TEU	2010	267 m	Wärtsilä - 10RT-flex82C	8.9	C
1224	MSC ROWAN IMO 9477610	4,249 TEU	2012	261 m	STX - 8K90ME-C6	8.9	C
1225	LEONIDAS Z IMO 9963528	2,800 TEU	2024	186 m	Hyundai - 6S60ME-C10	8.9	C
1226	CMA CGM PUGET IMO 9248124	4,396 TEU	2002	282 m	MAN - 8K98MC-C	8.9	C
1227	CMA CGM EIFFEL IMO 9248112	4,396 TEU	2002	282 m	MAN - 8K98MC-C	8.9	C
1228	NYK NEBULA IMO 9337640	4,888 TEU	2007	294 m	MAN - 9K98MC-C	8.9	C
1229	LITTLE ATHINA IMO 9980368	24,275	2024	172 m	MAN-B&W 6S60ME-C10	8.9	C
1230	MSC MASHA 3 IMO 9188219	2,169 TEU	1998	184 m	Mitsui - 6S60MC	8.9	C
1231	BAMSI BEYREK IMO 9215919	2,550 TEU	2001	210 m	Hyundai - 7RTA72U	8.9	C
1232	MEHMET KAHVECI A IMO 9248916	1,200 TEU	2002	155 m	MAN - 7S50MC-C	8.9	C
1233	CMA CGM SYDNEY IMO 9315953	4,363 TEU	2007	264 m	MAN - 8K90MC-C	8.9	C
1234	ADAMS IMO 9260914	5,928 TEU	2003	280 m	MAN - 10K98MC	8.9	C
1235	VAYENGA MAERSK IMO 9775751	3,700 TEU	2018	200 m	STX - 6G60ME-C9	8.9	C
1236	MSC HARMONY III IMO 9309411	2,824 TEU	2006	222 m	Hyundai - 7K80MC-C	8.9	C
1237	MAERSK KANSAS IMO 9311701	4,154 TEU	2007	292 m	Wärtsilä - 8RT-flex96C	8.9	C
1238	VISTULA MAERSK IMO 9775737	3,700 TEU	2018	200 m	STX - 6G60ME-C9	8.9	C
1239	MAERSK VALLETTA IMO 9833369	1,800 TEU	2019	172 m	Wärtsilä - 6RT-flex58T-E	8.9	C
1240	DETROIT EXPRESS IMO 9610169	3,832 TEU	2014	228 m	Wärtsilä - 7RT-flex82C	8.9	C
1241	GSL TEGEA IMO 9222986	5,762 TEU	2001	277 m	HSD Engine Co. Ltd. 12K90MC	8.9	C
1242	KALAHARI EXPRESS IMO 9400095	6,300 TEU	2010	306 m	Wärtsilä - 10RT-flex96C	8.9	C
1243	MAERSK BAYETE IMO 9355355	3,078 TEU	2009	223 m	Hyundai - 8K80ME-C	8.9	C
1244	MSC MIRELLA R IMO 9293179	4,931 TEU	2005	294 m	Hyundai - 9 RTA96C-B	8.9	C
1245	ONTARIO EXPRESS IMO 9290816	5,512 TEU	2005	268 m	Sulzer - 10RTA96C	9.0	C
1246	MSC YUXIN IMO 9966946	1,800 TEU	2024	172 m	MAN - 6S60ME-C10	9.0	C
1247	MONACO IMO 9389708	4,253 TEU	2009	260 m	MAN - 8K90MC-C	9.0	C
1248	SEADREAM IMO 9632832	5,023 TEU	2014	255 m	MAN - 6G80ME-C9	9.0	C
1249	MSC NEW HAVEN IMO 9293777	8,100 TEU	2005	334 m	Sulzer - 12RTA96C	9.0	C
1250	MSC FIAMMETTA IMO 9369758	5,800 TEU	2008	277 m	MAN - 9K98MC	9.0	C

Page 25 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.