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)

#69 of 1,190 general cargos

CO₂ intensity

4.7 g CO₂/dwt·nm

vs segment average (10.91)

-57% 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
51	DEVBULK DAMLA IMO 9711717	37,322	2015	178 m	MAKITA - 6S46ME-B8.3	4.4	A
52	COSCO SHIPPING FAN RONG IMO 9928906	61,537	2022	202 m	DALIAN MARINE - 5G60ME-C9	4.4	A
53	SAGA FORTUNE IMO 9644524	56,023	2012	200 m	Diesel United - 6RT-FLEX50-B	4.5	A
54	GREEN KOTKA IMO 9976056	68,003	2023	227 m	MAN-B&W 6S60ME-C10	4.5	A
56	BAY PEARL IMO 9460801	51,703	2011	188 m	Mitsubishi - 6S50MC-C	4.5	A
55	COSCO SHIPPING GRACE IMO 9928865	61,613	2021	202 m	Dalian Marine Diesel Works 5G60ME-C10	4.5	A
57	GREEN RAUMA IMO 9976070	68,010	2023	227 m	MAN-B&W 6S60ME-C10	4.5	A
58	GREEN AANEKOSKI IMO 9976082	68,018	2023	227 m	MAN-B&W 6S60ME-C10	4.6	A
59	BBC MERCURY IMO 9965588	39,869	2023	180 m	Makita Corp - Japan 6G45ME-C9-HPSCR	4.6	A
60	DEVBULK DENIZ IMO 9758301	41,500	2020	180 m	MAN - 6S50ME-B9	4.6	A
61	TAWA ARROW IMO 9401879	54,274	2008	190 m	Kawasaki - 6S50MC-C	4.6	A
63	DEVBULK SERVET IMO 9756250	41,500	2020	180 m	MAN - 6S50ME-B9	4.6	A
62	GREEN KEMI IMO 9976044	68,058	2023	227 m	MAN-B&W 6S60ME-C10	4.6	A
65	OSAKANA IMO 9253870	57,624	2004	212 m	Kawasaki - 6S60MC	4.6	A
67	WECO LAURA IMO 9877327	38,575	2020	180 m	Mitsui - 6S50ME-C	4.6	A
64	HALOPHYLA IMO 9613329	57,440	2013	200 m	STX - 6 S 50 MC-C	4.6	A
66	SSI FURIOUS IMO 9960174	37,973	2023	180 m	MAN-B&W 6S46ME-B8	4.6	A
68	IVS PHINDA IMO 9700940	37,720	2014	180 m	Mitsubishi - 6UEC45LSE	4.6	A
69	SSI PROVIDENCE IMO 9883065	37,899	2020	180 m	MAN - 5S50ME-C9	4.7	A
70	TENCA ARROW IMO 9385489	72,863	2009	225 m	Kawasaki - 6S60MC-C	4.7	A
71	GREEN HELSINKI IMO 9976068	64,986	2023	227 m	MAN-B&W 6S60ME-C10	4.7	A
72	SAGA FRIGG IMO 9613850	55,596	2013	200 m	STX - 5S60ME-C8	4.7	A
73	BBC VENUS IMO 9965590	39,827	2023	180 m	Makita Corp - Japan 6G45ME-C9-HPSCR	4.7	A
74	COSCO SHIPPING HONOR IMO 9881653	62,013	2020	202 m	DALIAN MARINE - 5G60ME-C9	4.7	A
75	SAGA MONAL IMO 9117739	56,801	1996	200 m	6S60MC	4.8	A
77	DEVBULK SADIYE IMO 9711705	37,322	2015	178 m	MAKITA - 6S46ME-B8.3	4.8	A
76	SAGA FUTURE IMO 9613836	55,596	2012	200 m	STX - 5S60MC-C8	4.8	A
78	NANDU ARROW IMO 9529580	62,960	2011	200 m	Kawasaki - 6S50MC-C	4.8	A
79	OCEAN PEARL IMO 9401829	52,365	2009	188 m	Mitsubishi - 6UEC50LSII	4.8	A
80	SAGA ADVENTURE IMO 9317406	46,627	2005	199 m	Diesel United - 7RTA52	4.8	A
81	CHANNEL PEARL IMO 9644550	50,633	2012	183 m	Mitsubishi - 6UEC50LSII	4.8	A
82	AFRICAN GROUSE IMO 9755737	37,700	2015	183 m	Hitachi - 6S46ME-B8.3	4.8	A
83	SSI ENDURANCE IMO 9932971	37,973	2022	180 m	MAN - 6S46ME-B8	4.8	A
84	CITRIODORA IMO 9613305	57,440	2013	200 m	STX - 6 S 50 MC-C	4.9	A
85	ATLAS S IMO 9491575	34,478	2011	177 m	Mitsubishi - 6UEC45LSE	4.9	A
86	PANAMANA IMO 9401805	58,022	2010	212 m	Kawasaki - 6S60MC	4.9	A
87	STAR TOSCANA IMO 9452139	51,674	2012	200 m	Mitsubishi - 6UEC50LSE	4.9	A
88	MAPLE ARROW IMO 9652569	55,889	2014	190 m	Mitsui - 6S50MC-C	4.9	A
89	DEVBULK CANSEN IMO 9703459	36,706	2014	177 m	MAN - 6S50MC-C	4.9	A
90	OSHIMANA IMO 9249295	53,151	2003	199 m	6S60MC	4.9	A
91	SAGA FREYA IMO 9502336	55,807	2017	200 m	Diesel United - 6RT-flex50-D	4.9	A
92	SSI ERDOGAN BEY IMO 9401946	50,780	2010	183 m	Mitsui - 6S50MC-C	4.9	A
93	LAKE PEARL IMO 9401984	51,687	2010	188 m	Mitsubishi - 6UEC50LSII	5.0	A
94	RIVER PEARL IMO 9363663	52,224	2008	188 m	Mitsubishi - 6UEC50LSII	5.0	A
95	POSIDANA IMO 9371086	58,022	2008	212 m	Kawasaki - 6S60MC	5.0	A
97	SAGA ODYSSEY IMO 9401788	46,500	2008	199 m	Diesel United - 7RTA52U	5.0	A
96	SAGA FJORD IMO 9613862	55,596	2013	200 m	STX - 5S60ME-C8	5.0	A
100	FJORD PEARL IMO 9460796	51,703	2011	188 m	Mitsubishi - 6S50MC-C	5.0	A
99	DRINA S IMO 9635743	38,037	2012	180 m	MAKITA - 6S46MC-C	5.0	A
98	BEATRICE IMO 9865245	39,278	2019	183 m	Mitsui - 6S46ME-B8	5.0	A

Page 2 of 24 — 1,190 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 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.