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 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2024)

#35 of 1,190 general cargos

CO₂ intensity

4.2 g CO₂/dwt·nm

vs segment average (10.91)

-61% greener

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

1,215

vessels ranked

3.23

greenest (g CO₂/t·nm)

11.21

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
1	YONG XING IMO 9930911	61,642	2022	200 m	Hudong Heavy Machinery - 6G50ME-C9	3.2	A
2	MAITACA ARROW IMO 9515228	73,296	2013	210 m	Mitsui - 6S50MC-C	3.5	A
3	GREEN PECEM IMO 9976484	77,173	2024	225 m	WinGD 6X62	3.6	A
4	ZHONG YUAN HAI YUN KAI TUO IMO 9837640	62,050	2018	202 m	MAN - 5G60ME-C9	3.6	A
5	TANCHOU ARROW IMO 9567740	73,296	2014	210 m	MAN - 6S50MC-C	3.7	A
6	AVOCET ARROW IMO 9448255	62,823	2015	200 m	Mitsui - 6S50ME-C8.2	3.8	A
7	COSCO SHIPPING TENG DA IMO 9928932	61,645	2023	202 m	DALIAN MARINE - 5G60ME-C9	3.8	A
9	TAI XING IMO 9930909	61,642	2021	200 m	Hudong Heavy Machinery Co. Ltd. 6G50ME-C9-HPSCR	3.9	A
8	OSPREY ARROW IMO 9687174	62,841	2015	200 m	Mitsui - 6S50MC-C	3.9	A
10	TUJU ARROW IMO 9443920	72,863	2010	225 m	Kawasaki - 6S60MC-C	3.9	A
11	COSCO SHIPPING XING WANG IMO 9872183	62,013	2020	202 m	MAN - 5G60ME-C9	4.0	A
12	COSCO SHIPPING JIN XIU IMO 9872169	62,002	2019	202 m	MAN - 5G60ME-C9	4.0	A
13	LAWIN ARROW IMO 9687162	62,841	2014	200 m	MAN - 6S50ME-C8	4.0	A
14	COSCO SHIPPING CHANG SHENG IMO 9928918	61,567	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.0	A
15	DELOS DAWN IMO 9363675	52,224	2008	188 m	Mitsubishi - 6UEC50LSII	4.0	A
16	DEVBULK GULTEN IMO 9659189	40,614	2013	185 m	Hitachi - 6S46MC-C	4.1	A
17	HERBERT IMO 9931551	61,762	2022	200 m	Hudong Heavy Machinery Co Ltd - China 6G50ME-C9-HPSCR	4.1	A
18	PILECKI IMO 9931563	61,747	2022	200 m	Hudong Heavy Machinery Co Ltd - China 6G50ME-C9-HPSCR	4.1	A
19	DUNNII IMO 9824978	62,346	2019	202 m	Wärtsilä - 6X52	4.1	A
21	GREEN MUNGUBA IMO 9976496	77,216	2024	225 m	WinGD 6X62	4.1	A
20	SSI ENDEAVOUR IMO 9883053	37,910	2020	180 m	MAN - 5S50ME-C9	4.1	A
22	PACIFIC VITALITY IMO 9913236	61,670	2022	200 m	Dalian Marine Diesel Co Ltd - China 6X52	4.1	A
23	COSCO SHIPPING VISION IMO 9881677	61,942	2021	202 m	DALIAN MARINE - 5G60ME-C9	4.1	A
24	COSCO SHIPPING PENG CHENG IMO 9872195	62,002	2020	202 m	MAN - 5G60ME-C9	4.1	A
25	JETOUR IMO 9317377	54,881	2006	190 m	Kawasaki - 6S50MC-C	4.1	A
26	ROBUSTA IMO 9824992	62,361	2019	202 m	Wärtsilä - 6X52	4.1	A
27	COSCO SHIPPING WISDOM IMO 9928889	61,570	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.2	A
28	MACAW ARROW IMO 9566617	73,296	2014	210 m	Mitsui - 6S50MC-C	4.2	A
29	YU AN IMO 9990167	61,468	2023	200 m	MAN-B&W 6S50ME-C9	4.2	A
31	THOR FEARLESS IMO 9317341	54,881	2005	190 m	Kawasaki - 6S50MC-C	4.2	A
30	SAGA FLORA IMO 9502348	55,807	2018	200 m	Wärtsilä - 6RT-flex50	4.2	A
32	BC PISTI IMO 9851359	39,287	2019	183 m	Mitsui - 6S46ME-B8	4.2	A
33	COSCO SHIPPING GLORY IMO 9881641	61,961	2020	202 m	DALIAN MARINE - 5G60ME-C9	4.2	A
34	TUNA S IMO 9779032	38,575	2019	180 m	Mitsui - 6S50ME-B8	4.2	A
35	MISAGO ARROW IMO 9448243	62,823	2015	200 m	MAN - 6S50MC-C	4.2	A
36	EAGLE ARROW IMO 9529592	62,967	2011	200 m	Kawasaki - 6S50MC-C	4.3	A
37	COSCO SHIPPING ZHUO YUE IMO 9872157	61,990	2019	202 m	DALIAN MARINE - 5G60ME-C9	4.3	A
38	SAGA FANTASY IMO 9658953	55,973	2013	200 m	Diesel United - 6RT-flex50	4.3	A
39	EMMA JANNEKE IMO 9992256	39,974	2024	183 m	MAN-B&W 6S46ME-B8	4.3	A
40	COSCO SHIPPING CHANG QING IMO 9872171	62,000	2020	202 m	DALIAN MARINE - 5G60ME-C9	4.3	A
41	COSCO SHIPPING FOUNTAIN IMO 9928891	61,495	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.3	A
43	SALIGNA IMO 9825001	62,358	2019	202 m	Wärtsilä - 6X52	4.3	A
42	PIPIT ARROW IMO 9552898	62,980	2012	200 m	Kawasaki - 6S50MC-C	4.3	A
44	COSCO SHIPPING SINCERE IMO 9928877	61,641	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.4	A
45	DEVBULK SARE IMO 9544152	40,445	2012	185 m	MAN - 6S46MC-C	4.4	A
46	DELTA PEARL IMO 9401831	52,341	2009	188 m	Mitsubishi - 6UEC50LSII	4.4	A
48	SAGA FRAM IMO 9613874	54,930	2013	200 m	STX - 5S60ME-C8	4.4	A
47	SAGA FUJI IMO 9609457	55,973	2013	200 m	Mitsubishi - 7UEC50LSII	4.4	A
49	OKIANA IMO 9253868	57,599	2004	212 m	6S60MC	4.4	A
50	PELICAN ARROW IMO 9495923	62,942	2011	200 m	Kawasaki - 6S50MC-C	4.4	A

Page 1 of 24 — 1,190 vessels

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 2024 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.