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)

#226 of 2,221 container ships

CO₂ intensity

4.4 g CO₂/dwt·nm

vs segment average (9.9)

-55% 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
203	MSC CLAUDE GIRARDET IMO 9936628	271,957	2023	400 m	UnKnown 11X92	4.3	A
198	COSCO SHIPPING UNIVERSE IMO 9795610	20,988 TEU	2018	400 m	CSSC - 12S90ME-C10	4.3	A
201	OOCL SPAIN IMO 9908126	24,000 TEU	2020	400 m	HSD Engine Co Ltd - South Korea 12X92	4.3	A
204	MSC LORENZA IMO 9962598	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.3	A
205	MOSCOW MAERSK IMO 9778818	19,630 TEU	2015	399 m	Doosan - 7G80ME-C9	4.4	A
207	HMM STOCKHOLM IMO 9868352	23,820 TEU	2020	400 m	MAN - 11G95ME-C9	4.4	A
206	OOCL VALENCIA IMO 9922598	24,000 TEU	2020	400 m	CSSC-MES Diesel Co Ltd - China 12X92	4.4	A
210	MSC MARIE IMO 9962574	202,562	2024	366 m	MAN-B&W 8G95ME-C10	4.4	A
209	PARANA EXPRESS IMO 9793909	11,800 TEU	2018	330 m	Doosan - 8X92	4.4	A
208	OOCL DENMARK IMO 9922548	24,188 TEU	2020	400 m	CSSC-MES Diesel Co Ltd - China 12X92DF	4.4	A
211	MSC ANNA IMO 9777204	19,200 TEU	2016	400 m	Doosan - 11G95ME-C9	4.4	A
212	MAERSK MC-KINNEY MOLLER IMO 9619907	18,270 TEU	2011	399 m	Doosan - 8S80ME-C MK9.2	4.4	A
215	ONE CRANE IMO 9741401	14,000 TEU	2016	364 m	Diesel United - 9X82	4.4	A
214	HMM PROMISE IMO 9742168	11,000 TEU	2018	330 m	Hyundai - 8G95ME-C9	4.4	A
213	MAERSK HORSBURGH IMO 9784269	15,226 TEU	2015	353 m	Hyundai - 8G95ME-C9	4.4	A
219	MAGLEBY MAERSK IMO 9619957	18,270 TEU	2011	399 m	Doosan - 8S80ME-C MK9.2	4.4	A
218	YM WONDERLAND IMO 9820910	14,000 TEU	2015	366 m	MAN - 11S90ME-C9	4.4	A
217	MAERSK CAMPTON IMO 9924211	15,500 TEU	2022	366 m	MAN - 9G95ME-C10	4.4	A
216	MSC LORETO IMO 9934735	24,000 TEU	2023	400 m	HD Hyundai Heavy Industries Co Ltd - South Korea 11X92	4.4	A
220	ZEUS LUMOS IMO 9864239	15,000 TEU	2021	366 m	Wärtsilä - 10X92	4.4	A
222	MAERSK HONG KONG IMO 9784257	14,000 TEU	2017	353 m	Hyundai - 8G95ME-C9	4.4	A
221	MSC ADYA IMO 9932921	15,600 TEU	2021	364 m	HD Hyundai Heavy Industries Co Ltd - South Korea 8X92-B	4.4	A
224	MAREN MAERSK IMO 9632129	18,270 TEU	2011	399 m	Doosan - 8S80ME-C9	4.4	A
225	MAERSK CHARLESTON IMO 9936379	15,500 TEU	2023	366 m	UnKnown 8G95ME-C10	4.4	A
223	MAERSK HANGZHOU IMO 9784300	15,226 TEU	2015	353 m	Hyundai - 8G95ME-C9	4.4	A
227	ONE MAGDALENA IMO 9937347	11,923 TEU	2022	330 m	CSSC-MES Diesel Co Ltd - China 8X92	4.4	A
226	YM TOPMOST IMO 9878515	11,714 TEU	2015	334 m	MAN - 9S90ME-C10	4.4	A
229	HMM PERIDOT IMO 9955258	13,248 TEU	2024	336 m	Hanwha Engine Co Ltd - South Korea 7G95ME-C10-LPSCR	4.4	A
228	ZIM SPINEL IMO 9968035	7,000 TEU	2024	272 m	Hudong Heavy Machinery Co Ltd - China 7G80ME-C10-GI-ERGTC	4.4	A
230	MSC APOLLINE IMO 9896983	23,656 TEU	2021	400 m	Doosan - 9L32/40CD	4.4	A
231	MAERSK HIDALGO IMO 9784283	15,226 TEU	2015	353 m	Hyundai - 8G95ME-C9	4.4	A
235	MSC NAMIBIA IMO 9974553	8,100 TEU	2025	260 m	Hyundai Heavy Industries Co. Ltd. 7G80ME-C10-coEGR	4.5	A
234	CSCL ARCTIC OCEAN IMO 9695169	18,982 TEU	2015	400 m	Hyundai - 12S90ME-C9	4.5	A
233	ZEAL LUMOS IMO 9864241	15,000 TEU	2021	366 m	Wärtsilä - 10X92	4.5	A
232	HMM NURI IMO 9869162	14,000 TEU	2021	365 m	MAN - 9G95ME-C10	4.5	A
236	SAN LORENZO MAERSK IMO 9622227	9,669 TEU	2013	333 m	HHI - 7S90-C9.2	4.5	A
237	MSC EDNA IMO 1016680	139,394	2025	335 m	MAN-B&W 6G90ME-C10-GI	4.5	A
240	MAERSK HUACHO IMO 9848948	15,226 TEU	2015	353 m	Hyundai - 8G95ME-C9	4.5	A
238	OOCL JAPAN IMO 9776195	21,413 TEU	2015	400 m	Doosan - 11G95ME-C9	4.5	A
239	MSC LONDON IMO 9606302	16,000 TEU	2014	399 m	STX - 12K98MC-C	4.5	A
242	MURCIA MAERSK IMO 9780457	19,630 TEU	2015	399 m	Doosan - 7G80ME-C9	4.5	A
241	YM TRUTH IMO 9860910	12,726 TEU	2020	332 m	MAN - 8G95ME-C9	4.5	A
243	MAERSK CANDOR IMO 9924223	15,500 TEU	2022	366 m	MAN - 9G95ME-C10	4.5	A
244	MANCHESTER MAERSK IMO 9780445	19,630 TEU	2015	399 m	Doosan - 7G80ME-C9	4.5	A
246	CMA CGM TITAN IMO 9399222	11,400 TEU	2009	363 m	MAN - 12K98ME-C	4.5	A
245	MORTEN MAERSK IMO 9632105	18,270 TEU	2011	399 m	Doosan - 7S80ME-C	4.5	A
250	ONE MILANO IMO 9757187	13,870 TEU	2018	366 m	Mitsubishi - 11S90ME-C9	4.5	A
249	MSC AMELIA IMO 9896995	23,656 TEU	2021	400 m	Doosan - 9L32/40CD	4.5	A
248	OOCL GERMANY IMO 9776183	21,413 TEU	2015	400 m	Doosan - 11G95ME-C9	4.5	A
247	ZEPHYR LUMOS IMO 9864227	15,000 TEU	2021	366 m	Wärtsilä - 10X92	4.5	A

Page 5 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.