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)

#1,340 of 2,221 container ships

CO₂ intensity

9.4 g CO₂/dwt·nm

vs segment average (9.9)

-5% 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
1301	VAGA MAERSK IMO 9778545	3,700 TEU	2019	200 m	MAN - 6G60ME-C9	9.2	C
1302	X-PRESS SALWEEN IMO 9862748	1,800 TEU	2021	172 m	Hudong Heavy Machinery Co. Ltd. 6S60ME-C10	9.2	C
1303	CMA CGM FRANCOISE SAGAN IMO 9356696	6,661 TEU	2008	304 m	Hyundai - 11K98ME-C	9.2	C
1304	STANLEY A IMO 9303807	2,824 TEU	2003	222 m	Hyundai - 7K80MC-C	9.2	D
1305	MAERSK OHIO IMO 9298698	4,300 TEU	2006	292 m	Hyundai - 10K90MC-C	9.2	D
1306	MSC CARPATHIA III IMO 9253038	2,824 TEU	2003	222 m	Hyundai - 7K80MC-C	9.2	D
1307	SEATRADE COLOMBIA IMO 9976238	1,747 TEU	2025	172 m	MAN-B&W 6S60ME-C10	9.2	D
1308	PORTO KAGIO IMO 9261451	4,492 TEU	2002	279 m	Diesel United - 10K98MC-VI	9.2	D
1309	VUOKSI MAERSK IMO 9775775	3,700 TEU	2018	200 m	MAN - 6S70ME-C8	9.2	D
1310	MED TRABZON IMO 9141780	2,052 TEU	1997	182 m	DIESELMOTORENWERK VULKAN GMBH WERK ROSTOCK 6 S 60 MC	9.2	D
1311	CMA CGM SINTRA IMO 9961362	2,000 TEU	2024	204 m	6S60ME-C10-GI	9.3	D
1312	CMA CGM LA TRAVIATA IMO 9299795	8,488 TEU	2006	334 m	Hyundai - 12 K98MC	9.3	D
1313	HYUNDAI SINGAPORE IMO 9305685	6,763 TEU	2006	304 m	MAN - 12K98MC-C	9.3	D
1314	PAOLO IMO 9389681	4,253 TEU	2008	260 m	MAN - 8K90MC-C	9.3	D
1315	SEATTLE C IMO 9360910	4,253 TEU	2007	260 m	Doosan - 8K90MC-C	9.3	D
1316	SC MONTREUX IMO 9295414	4,132 TEU	2005	264 m	Hyundai - 9 K 90 MC-C	9.3	D
1317	CMA CGM GUARANI IMO 9234135	2,478 TEU	2002	207 m	Wärtsilä - 7 RTA 72 U-B	9.3	D
1318	OOCL KOBE IMO 9329526	4,506 TEU	2004	260 m	Doosan - 8K90MC-C	9.3	D
1319	GSL MYNY IMO 9213583	5,762 TEU	2000	277 m	SAMSUNG HEAVY INDUSTRIES CO., LTD. 12 K 90 MC	9.3	D
1320	MSC MADRID IMO 9480198	5,550 TEU	2011	270 m	MAN - 7K98MC-C	9.3	D
1321	CAPE SKAGEN IMO 9969857	2,713 TEU	2023	189 m	7S60ME-C10-HPSCR	9.4	D
1322	CMA CGM MONTREAL IMO 9363417	2,401 TEU	2007	200 m	MAN - 7S70MC-C	9.4	D
1323	MSC HIMANSHI IMO 9127540	2,072 TEU	1997	188 m	Sulzer - 6RTA72U	9.4	D
1324	SHEKOU STAR IMO 9322322	4,250 TEU	2007	260 m	MAN - 8K90MC-C	9.4	D
1325	LEDA MAERSK IMO 9190755	4,045 TEU	2001	266 m	Doosan - 10K90MC	9.4	D
1326	GABRIEL A IMO 9300659	1,676 TEU	2004	156 m	MAN - 7S50MC-C	9.4	D
1327	MAERSK MONTANA IMO 9305312	4,300 TEU	2006	292 m	Hyundai - 10K90MC-C	9.4	D
1328	MSC CAPRI IMO 9154220	2,460 TEU	1998	208 m	Sulzer - 6RTA72U	9.4	D
1329	PANDA 001 IMO 9290787	5,527 TEU	2005	276 m	Sulzer - 10RTA96C	9.4	D
1330	REMAH IMO 9947720	1,692 TEU	2022	172 m	China Shipbuilding Industry Co Diesel Engine Co Ltd 6S60ME-C10.5	9.4	D
1331	MSC JANIS 3 IMO 9134490	2,100 TEU	1997	206 m	KOREA HEAVY IND. &AMP; CON. HANJUNG-MAN 7 L 60 MC	9.4	D
1332	MSC MARIA PIA IMO 9155107	2,808 TEU	1997	196 m	Hyundai - 8 RTA 72 U	9.4	D
1333	CMA CGM TOPAZ IMO 9397602	4,300 TEU	2009	260 m	Doosan - 8K90MC-C	9.4	D
1334	KINGSTON IMO 9389693	4,253 TEU	2008	260 m	MAN - 8K90MC-C	9.4	D
1335	CMA CGM SPIRIT IMO 9372860	3,426 TEU	2008	229 m	Hitachi - 8 K80MC-C	9.4	D
1336	ZIM VIRGINIA IMO 9231808	4,800 TEU	2001	294 m	Hyundai - HYUNDAI - MAN B&W 9K90MC-C	9.4	D
1337	MSC BREMEN IMO 9369734	5,029 TEU	2007	294 m	Wärtsilä - 8RT-flex96C	9.4	D
1338	CAPE SABLE IMO 9950131	2,700 TEU	2024	189 m	7S60ME-C10-HPSCR	9.4	D
1339	CALI IMO 9631101	3,600 TEU	2011	228 m	Hyundai - 7S70ME-C	9.4	D
1340	MSC DYMPHNA IMO 9110391	5,711 TEU	1996	275 m	MAN - 12K90MC-C	9.4	D
1341	LEXA MAERSK IMO 9190767	3,700 TEU	2001	266 m	10K90MC	9.5	D
1342	STADT DRESDEN IMO 9320049	2,700 TEU	2004	222 m	MAN - 7L70MC-C	9.5	D
1343	MSC ELIZABETH III IMO 9215892	2,556 TEU	2001	210 m	Hyundai - 7 RTA 72 U-B	9.5	D
1344	CAPE CITIUS IMO 9848742	2,708 TEU	2021	186 m	MAN - 6G60ME-C9	9.5	D
1345	MSC RADIANT III IMO 9235402	2,452 TEU	2001	208 m	Sulzer - 6RTA72U	9.5	D
1346	JOLLY GIADA IMO 9484522	4,400 TEU	2010	260 m	Doosan - 8K90MC-C	9.5	D
1347	MSC CORUNA IMO 9480215	5,550 TEU	2011	270 m	Doosan - 7K98MC-C	9.5	D
1348	MSC KIM IMO 9351581	4,254 TEU	2008	265 m	MAN - 8K90MC-C	9.5	D
1349	MSC MONTEREY V IMO 9349796	4,860 TEU	2007	275 m	MAN - 7K98MC-C	9.5	D
1350	MAERSK PUELO IMO 9306172	6,539 TEU	2006	304 m	Hyundai - 10 K98ME-C	9.5	D

Page 27 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.