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)

#119 of 1,190 general cargos

CO₂ intensity

5.2 g CO₂/dwt·nm

vs segment average (10.91)

-53% 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
101	HOSANGER IMO 9081801	50,211	1995	213 m	MAN - 6L23/30	5.0	A
102	FERUSA R IMO 9668556	37,429	2014	180 m	Kawasaki - 5S50ME-C8.2	5.0	A
103	GOLD OAK IMO 9806342	37,732	2017	180 m	MAKITA - 6S50ME-C8	5.0	A
104	STAR NAVARRA IMO 9548823	51,624	2010	200 m	Mitsubishi - 6UEC50LSE	5.0	A
105	SAGA CREST IMO 9014066	47,069	1994	199 m	Sulzer - 7RTA52	5.1	A
106	MOMI ARROW IMO 9385506	54,204	2009	190 m	Kawasaki - 6S50MC-C	5.1	A
109	PROVIDANA IMO 9380788	58,022	2007	212 m	MAN - 6S60MC	5.1	A
108	EVANGELIA L IMO 9737058	38,167	2015	183 m	MAN - 6S46ME-B8	5.1	A
107	BRAVE ARSENAL IMO 9616101	33,383	2013	180 m	Mitsubishi - 6UEC45LSE	5.1	A
110	SAGA BEIJA-FLOR IMO 9160798	46,990	1997	199 m	Sulzer - 7RTA52	5.1	A
111	KULTUS COVE IMO 9701059	37,574	2016	180 m	Mitsubishi - 6UEC45LSE-Eco-B2	5.1	A
112	SAGA HORIZON IMO 9121297	47,016	1995	199 m	Sulzer - 7RTA52	5.1	A
114	SAGA FRONTIER IMO 9343510	46,500	2007	199 m	Diesel United - 7RTA52	5.1	A
113	STAR MAIA IMO 9189940	50,655	1998	195 m	Mitsubishi - 6UEC60LSII	5.1	A
115	BRASSIANA IMO 9613290	57,536	2012	200 m	STX - 6 S 50 MC-C	5.1	A
116	IRVINE BAY IMO 9682928	37,920	2014	180 m	MAN - 6S46MC-C	5.1	A
117	SPANACO ADVENTURE IMO 9014078	47,076	1994	199 m	Sulzer - 7RTA52	5.2	A
118	SAGA FAITH IMO 9808651	55,807	2019	200 m	Wärtsilä - 6RT-flex50-D	5.2	A
119	LADY SERRA IMO 9449883	30,124	2011	179 m	MAKITA - 6S42MC	5.2	A
120	STAR LAGUNA IMO 9593854	50,827	2012	204 m	Hyundai - 5S60ME-C8	5.2	A
121	BBC SATURN IMO 9932127	40,255	2022	180 m	MAN - 5S50ME-C9	5.2	A
122	SAGA NAVIGATOR IMO 9371062	46,652	2007	199 m	Diesel United - 7RTA52	5.2	A
123	POLSTEAM DABIE IMO 9971850	37,592	2024	200 m	MAN-B&W 5S50ME-C9	5.2	A
124	STAR MINERVA IMO 9355513	50,757	2008	190 m	Kawasaki - 5S60MC-C	5.2	A
126	LOCOMOTION IMO 9667423	38,046	2013	180 m	MAKITA - 6S46MC-C	5.2	A
125	LAYLA IMO 9973420	37,359	2023	180 m	MAN - 6S46ME-B8	5.2	A
127	SAGA ENTERPRISE IMO 9343481	46,550	2006	199 m	Diesel United - 7RTA52	5.2	A
128	NORD NANAMI IMO 9624627	38,204	2012	180 m	MAN - 6S46MC-C	5.3	A
129	BERGE JUNGFRAU IMO 9846304	37,683	2019	180 m	MAKITA - 6S50ME-C8	5.3	A
131	STAR LOUISIANA IMO 9593880	50,720	2013	204 m	Hyundai - 5S60ME-C8	5.3	A
130	STAR DALMATIA IMO 9548835	51,588	2011	200 m	Mitsubishi - 6UEC50LSE	5.3	A
132	ICY BAY IMO 9722467	37,570	2017	180 m	MAKITA - 6S50ME-C9	5.3	A
133	HOYANGER IMO 9100073	50,194	1995	213 m	MAN - 6L23/30	5.3	A
134	BBC CERES IMO 9972490	40,600	2024	180 m	Yichang Marine Diesel Engine Co Ltd - China 5S50ME-C9-HPSCR	5.3	A
135	HERANGER IMO 9079121	50,198	1995	213 m	MAN - 6L23/30	5.3	A
136	SAGA JANDAIA IMO 9200421	47,027	1998	199 m	Sulzer - 7RTA52	5.3	A
137	STAR LIVORNO IMO 9593907	50,700	2013	204 m	Hyundai - 5S60ME-C8	5.3	A
139	SAGA ANDORINHA IMO 9197002	47,027	1998	199 m	Diesel United - 7RTA52	5.3	A
138	QUEEN ISLAND IMO 9741188	37,802	2018	180 m	Mitsubishi - 6UEC45LSE	5.3	A
141	NARIE IMO 9767728	36,648	2018	200 m	—	5.4	A
140	MOUNTPARK IMO 9773844	37,839	2016	183 m	MAN - 6S46MC-C8	5.4	A
142	AMBER CONFIDENCE IMO 9866550	37,720	2020	180 m	MAN - 6S46ME-B8	5.4	A
143	HYDRA DAWN IMO 9607447	35,390	2013	180 m	Wärtsilä - 5RT-flex50	5.4	A
144	CANELO ARROW IMO 9107318	48,077	1997	190 m	5S60MC	5.4	A
145	EMERALD BAY IMO 9385075	32,258	2008	177 m	Mitsubishi - 6UEC52LA	5.4	A
148	OPTIMANA IMO 9253856	57,599	2003	212 m	6S60MC	5.4	A
147	SAGA VOYAGER IMO 9233454	46,882	2001	199 m	Sulzer - 7RTA52	5.4	A
146	CETUS TIGER IMO 9606003	37,059	2013	178 m	MAKITA - 6S46MC-C8.2	5.4	A
150	MOUNT HIKURANGI IMO 9580039	33,030	2013	176 m	Mitsubishi - 6UEC45LSE	5.4	A
149	ADRIENNE IMO 9832509	34,845	2020	180 m	MAN - 6S46ME-B8	5.4	A

Page 3 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.