General Cargo 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)

#360 of 2,380 general cargos

CO₂ intensity

6.7 g CO₂/dwt·nm

vs segment average (13.91)

-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

509 at D/E

A 1,034B 685C 507D 258E 251

2,735 rated vessels · 223 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

'27 Q1

'27 Q2

'27 Q3

'27 Q4

'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
Propeller redesign / replacement	1,462	5–10%	€400k–1,200k	—	vendor claim
Rotor sails (per unit)	752	route-dependent	€1,500k–3,500k	—	vendor claim
Suction wing sails (per unit)	752	route-dependent	€1,000k–2,500k	—	vendor claim
Turbocharger cut-out	648	1–3%	€80k–250k	—	vendor claim
Bulbous bow reprofiling	566	2–6%	€300k–900k	—	vendor claim
Shaft generator / PTO	97	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

246

D/E vessels with at least one eligible measure

€96–287M

capex range, top measure per vessel (246 of 246 with computable scaling)

0.06–0.12 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
KOKODA CHIEF · <25k	E	15y	2026	99%	Jun 2026
CLAUDIO CUCCO · <25k	E	40y	2026	98%	Apr 2028
GINO CUCCO · <25k	E	39y	2026	98%	Dec 2028
GIUSEPPE CUCCO · <25k	E	49y	2026	98%	May 2028
LADY OF CHICHESTER · <25k	E	56y	2026	98%	Dec 2028

See all 2,735 rated general cargos with exposure and dock windows. Sign in →

Sort 🌱 Greenest first 🔧 Least efficient first — retrofit candidates

Size (DWT)

All sizes < 25,000 DWT 25k – 60k DWT 60k – 100k DWT 100k – 200k DWT > 200,000 DWT

Year

2025 2024

2,429

vessels ranked

3.18

greenest (g CO₂/dwt·nm)

14.44

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
351	SIROCO IMO 9317705	37,534	2006	178 m	Akasaka - AKASAKA-MISTUBISHI 6UEC52LA	6.6	A
352	SUNSET IMO 9402122	37,334	2009	178 m	Akasaka - 6UEC52LA	6.6	A
354	RADIUS IMO 9526710	36,976	2012	178 m	Akasaka - 6UEC52LA	6.6	A
353	BC VANESSA IMO 9426855	31,755	2010	172 m	Akasaka - 6UEC52LA	6.6	A
355	ROERBORG IMO 9592599	23,260	2014	170 m	MAK/Caterpillar - 9M32C	6.6	A
356	CHRYSOULA S IMO 9713404	37,786	2015	180 m	MAN - 6S46MC-C	6.6	A
357	INCHON TRADER IMO 9161211	20,501	1998	153 m	Mitsubishi - 6UEC50LS	6.7	A
358	MOON GATE IMO 9400904	32,292	2009	177 m	Mitsubishi - 6UEC52LA	6.7	A
359	TIAN QI IMO 9722742	37,940	2016	190 m	Hudong Heavy Machinery - 6RT-flex50-B	6.7	A
361	DEVBULK ALARA IMO 9449895	32,309	2010	179 m	MAKITA - 6S42MC	6.7	A
360	ECO CROSSFIRE IMO 9597654	33,649	2012	180 m	Mitsubishi - 6UEC52LA	6.7	A
363	MANTA SENA IMO 9338137	32,354	2006	177 m	Mitsubishi - 6UEC52LA	6.7	A
362	PEARL IVY IMO 9580015	31,858	2013	176 m	Mitsubishi - 6UEC45LSE	6.7	A
365	EMERALD BAY IMO 9385075	32,258	2008	177 m	Mitsubishi - 6UEC52LA	6.7	A
364	MSC CALEDONIA II IMO 9262546	35,079	2002	188 m	Sulzer - 6RTA48T-B	6.7	A
366	CASPIAN HARMONY IMO 9766645	31,671	2016	166 m	MAN - 6S46ME-B8.2	6.7	A
368	LADY ZEHMA IMO 9303431	32,328	2005	173 m	Hitachi - 6S46MC-C	6.7	A
367	TIAN FU IMO 9704738	38,146	2015	190 m	Wärtsilä - 6RT-flex50	6.7	A
369	V PEGASUS IMO 9370422	33,248	2008	180 m	Mitsubishi - 6UEC52LA	6.7	A
370	BR MIRAL IMO 9149732	23,923	1997	158 m	Hitachi - 6L42MC	6.8	A
371	PAPUA IMO 9266906	31,817	2003	177 m	Mitsubishi - 6UEC52LA	6.8	A
373	KEFALONIA IMO 9449780	28,742	2009	170 m	MAKITA - 6S42MC	6.8	A
372	MANTA ZUHAL IMO 9374351	37,313	2008	178 m	Akasaka - 6UEC52LA	6.8	A
374	AAL LIMASSOL IMO 9958755	32,517	2024	180 m	MAN-B&W 6S50ME-C9	6.8	A
375	SIDER TRADER IMO 9427574	26,365	2011	157 m	MAKITA - 8S42MC-MKVII	6.8	A
377	PRIME STAR IMO 9612284	36,570	2012	178 m	MAKITA - 6S46MC-C8	6.8	A
376	BOKA IMO 9658800	33,382	2013	177 m	Mitsubishi - 6UEC45LSE	6.8	A
378	BOSPHORUS S IMO 9400887	32,282	2009	177 m	Mitsubishi - 6UEC52LA	6.8	A
380	MUROVDAG IMO 9791042	37,155	2020	180 m	MAN - 6S46ME-B8	6.8	A
379	CARIBBEAN HARMONY IMO 9458468	31,777	2017	166 m	MAN - 6S46ME-B8	6.8	A
382	NEPTULUS IMO 9473705	33,706	2012	180 m	Mitsubishi - 6UEC45LSE	6.8	A
381	BC ZOE IMO 9711901	33,443	2014	177 m	Mitsubishi - 6UEC45LSE	6.8	A
383	YASSIN BEY IMO 9220988	31,921	2000	172 m	Mitsubishi - 6UEC52LA	6.8	A
384	TIAN LU IMO 9704740	38,122	2015	190 m	DALIAN MARINE - 6RT-flex50-B	6.9	A
386	TRANSMERIDIAN IMO 9577757	35,853	2011	180 m	MAN - 5S50MC-C	6.9	A
385	POLLUX IMO 9379648	32,017	2007	176 m	Mitsubishi - 6UEC52LA	6.9	A
387	HG ROTTERDAM IMO 9598921	37,873	2019	182 m	Mitsubishi - 6UEC50LSII	6.9	A
388	TIAN ZHEN IMO 9722728	38,007	2016	190 m	Hudong Heavy Machinery - 6RT-flex50-B	6.9	A
389	INDIANA IMO 9186211	44,982	2000	198 m	6S60MC	6.9	A
390	FERASET IMO 9747651	26,354	2015	157 m	MAN - 6S42MC	6.9	A
392	TIAN HUI IMO 9774599	37,130	2017	190 m	Hudong Heavy Machinery - 6RT-flex50	6.9	A
391	VIIKKI IMO 9797620	25,600	2018	160 m	STX - 5G45ME-C9.5-GI	6.9	A
394	AAL PARIS IMO 9594494	33,287	2011	179 m	STX - 6 S 50 MC-C	6.9	A
393	LUCKY FINDER IMO 9393620	37,268	2009	178 m	Akasaka - 6UEC52LA	6.9	A
395	TIAN EN IMO 9774587	37,125	2017	190 m	Hudong Heavy Machinery - 6RT-flex50	6.9	A
397	ATLANTIC HARMONY IMO 9613812	31,776	2017	166 m	Doosan - 6S46ME-C	7.0	A
396	ISOLDANA IMO 9186235	44,691	2000	198 m	6S60MC	7.0	A
398	ECO WILDFIRE IMO 9652492	33,296	2013	180 m	Mitsubishi - 6UEC45LSE	7.0	A
399	TEAL BAY IMO 9343637	32,327	2007	177 m	Mitsubishi - 6UEC52LA	7.0	A
400	TIAN YOU IMO 9823625	37,077	2018	190 m	Hudong Heavy Machinery - 6RT-flex50	7.0	A

Page 8 of 48 — 2,380 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.