Most Emission-Efficient General Cargos

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)

#1,382 of 2,380 general cargos

CO₂ intensity

15.3 g CO₂/dwt·nm

vs segment average (13.96)

+9% higher

Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo

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

3.13

greenest (g CO₂/t·nm)

14.48

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
1351	MAMMAD AMIN RESULZADEH IMO 9175157	6,623	1998	129 m	MAK/Caterpillar - 6M25	15.1	C
1352	FROLAND IMO 9505584	9,692	2011	107 m	MAK/Caterpillar - 8M32C	15.2	C
1353	KARITA IMO 9436783	5,488	2013	107 m	MAK/Caterpillar - 6M25	15.2	C
1354	FAGELGRACHT IMO 9428425	12,190	2011	137 m	Wärtsilä - 6L46B	15.2	C
1355	HAGLAND PIONEER IMO 9936331	4,902	2022	87 m	MaK 6M25E	15.2	C
1356	JUNO IMO 9421154	8,265	2009	108 m	MAK/Caterpillar - MAK 6M32C	15.2	C
1357	RIX EMERALD IMO 9116802	3,001	1995	88 m	MWM - SBV 6 M 628	15.2	C
1358	GROSSE FREIHEIT IMO 9507142	5,465	2012	107 m	CATERPILLAR MOTOREN GMBH & CO. KG 6 M 25	15.2	C
1359	TRADE NAVIGATOR IMO 9631371	8,095	2013	118 m	MAK/Caterpillar - 9M25C	15.2	C
1360	WAALBORG IMO 9505546	9,611	2010	107 m	MAK/Caterpillar - 8M32C	15.2	C
1361	MARLON IMO 9570644	7,880	2011	130 m	MAK/Caterpillar - 9M25C	15.2	C
1362	HAMMARLAND IMO 9415052	9,198	2011	129 m	MAK/Caterpillar - 8M32C	15.2	C
1363	GELMOND 2 IMO 9403487	5,492	2008	115 m	MAN - 6L28/32A	15.2	C
1364	GABRIELA H IMO 9147863	6,790	1998	108 m	MAN - 6S26MC	15.2	C
1365	LUCA IMO 9286712	5,345	2004	101 m	MAK/Caterpillar - 8M25	15.2	C
1366	FRI LAKE IMO 9195664	3,653	1999	89 m	Deutz - SBV6M628	15.2	C
1367	MARIT IMO 9364148	8,390	2008	122 m	MAK/Caterpillar - MAK 8 M 32 C	15.2	C
1368	BEAUTRIDENT IMO 9369306	7,223	2008	118 m	MAK/Caterpillar - 9M25C	15.2	C
1369	LADY DARYA IMO 9188946	5,296	1999	95 m	MAK/Caterpillar - 8M25	15.2	C
1370	MANISA CAMILLA IMO 9362669	8,098	2006	108 m	STX - 7 S 26 MC-MK6	15.2	C
1371	MINERVAGRACHT IMO 9571521	12,176	2011	142 m	Wärtsilä - 6L46	15.2	C
1372	KRISTEL IMO 9191747	5,049	1999	95 m	MAK/Caterpillar - 8M25	15.2	C
1373	WILSON DORDRECHT IMO 9145140	3,010	1996	88 m	Deutz - SBV6M628	15.2	C
1374	ONEGO TRADER IMO 9238351	8,930	2001	132 m	MAK MOTOREN GMBH &AMP; CO. KG 8M32C	15.2	C
1375	KAREWOOD STAR IMO 9363986	6,315	2007	127 m	MAN - 9L21/31	15.2	C
1376	DROGDENBANK IMO 9474163	6,665	2009	111 m	MAK/Caterpillar - 8M25	15.2	C
1377	BBC MOONSTONE IMO 9563732	14,338	2013	153 m	MAN - 6S46MC-C	15.2	C
1378	ABANA IMO 9158070	8,362	1998	122 m	MAK/Caterpillar - 8M32	15.2	C
1379	SCOT EXPLORER IMO 9841794	4,790	2019	90 m	MAK/Caterpillar - 6M25C	15.2	C
1380	DAY DREAM IMO 9214721	5,750	2001	100 m	Wärtsilä - 6L32	15.3	C
1381	UNISTREAM IMO 9484235	8,500	2010	132 m	MAK/Caterpillar - 8M32C	15.3	C
1382	JOHANNES IMO 9815343	4,938	2018	90 m	MAK/Caterpillar - 8M20	15.3	C
1383	SNOW IMO 9100164	4,223	1994	91 m	MAK/Caterpillar - 6M453C	15.3	C
1384	SIDER BUFFALO IMO 9861512	7,601	2020	100 m	Caterpillar 8DKM-28E	15.3	C
1385	DOMINICA IMO 9232204	13,022	2001	127 m	Hudong Heavy Machinery - 5 S 42 MC	15.3	C
1386	CL NOGARO IMO 9969493	3,614	2025	88 m	Mitsubishi S12R-MPTAW	15.3	C
1387	ARGO IMO 9421128	8,265	2009	108 m	MAK/Caterpillar - MAK 6M32C	15.3	C
1388	TRENT NAVIGATOR IMO 9631369	8,102	2013	118 m	MAK/Caterpillar - 9M25C	15.3	C
1389	BBC RIO IMO 9430222	18,010	2012	162 m	MAN - 6S50MC-C	15.3	C
1390	INDI IMO 9370290	3,850	2009	89 m	MAK/Caterpillar - 8M20	15.3	C
1391	TREVILLE IMO 9815331	4,938	2018	90 m	MAK/Caterpillar - 8M20	15.3	C
1392	ESEN IMO 9235488	8,959	2000	129 m	MAK/Caterpillar - 9M32	15.3	C
1393	TEMA IMO 9428786	8,270	2007	116 m	Daihatsu - 8DKM-28	15.3	C
1394	KLARIKA IMO 9342164	5,936	2007	107 m	MAK/Caterpillar - 6M25	15.3	C
1395	KITTY C IMO 9558048	6,798	2011	106 m	MAK/Caterpillar - 6M25C	15.3	C
1396	LYSVIK SEAWAYS IMO 9144251	7,500	1998	129 m	Wärtsilä - 6R46C	15.3	C
1397	STELLAMAR IMO 9951836	5,446	2024	90 m	Yanmar 6EY26W	15.3	C
1398	TANGO REY IMO 9214185	8,600	2001	129 m	MAK/Caterpillar - 8M32	15.3	C
1399	RHODANUS IMO 9173173	3,234	1998	89 m	Wärtsilä - 8R20	15.3	C
1400	GALA IMO 9304461	12,578	2005	140 m	MAN - 8S42MC	15.3	C

Page 28 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.