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)

#101 of 2,380 general cargos

CO₂ intensity

4.7 g CO₂/dwt·nm

vs segment average (13.96)

-66% 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

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
101	SAGA SKY IMO 9144354	47,034	1996	199 m	Sulzer - 7RTA62	4.8	A
103	OCEANA SKY IMO 9189938	50,655	1998	195 m	Mitsubishi - 6UEC60LSII	4.8	A
102	EAGLE ARROW IMO 9529592	62,967	2011	200 m	Kawasaki - 6S50MC-C	4.8	A
104	EIKE OLDENDORFF IMO 9794472	38,520	2017	180 m	Yichang - 5S50ME-B9	4.8	A
105	GOLD OAK IMO 9806342	37,732	2017	180 m	MAKITA - 6S50ME-C8	4.8	A
108	HOSANGER IMO 9081801	50,211	1995	213 m	MAN - 6L23/30	4.8	A
107	CALYPSO.GR IMO 9785134	37,865	2017	180 m	MAKITA - 6S50ME-C8	4.8	A
106	ESTRELLA IMO 9477270	50,448	2012	183 m	MAN - 6S50MC-C	4.8	A
109	SOUND PEARL IMO 9452907	52,125	2011	188 m	MAN - 6S50MC-C	4.8	A
110	CHANNEL PEARL IMO 9644550	50,633	2012	183 m	Mitsubishi - 6UEC50LSII	4.8	A
111	POLSTEAM OKRA IMO 9984819	37,592	2024	200 m	MAN-B&W 5S50ME-C9	4.9	A
112	POLAND PEARL IMO 9731236	45,474	2015	183 m	Mitsui - 6S50MC-C8	4.9	A
113	COSCO SHIPPING HONOR IMO 9881653	62,013	2020	202 m	DALIAN MARINE - 5G60ME-C9	4.9	A
115	AFRICAN PIPIT IMO 9890903	37,636	2020	180 m	MAKITA - 6S50ME-C8	4.9	A
114	JU FU IMO 1072828	61,347	2025	200 m	MAN-B&W 6S50ME-C9	4.9	A
117	BERGE JUNGFRAU IMO 9846304	37,683	2019	180 m	MAKITA - 6S50ME-C8	4.9	A
116	COSCO SHIPPING GRACE IMO 9928865	61,613	2021	202 m	Dalian Marine Diesel Works 5G60ME-C10	4.9	A
118	FERUSA R IMO 9668556	37,429	2014	180 m	Kawasaki - 5S50ME-C8.2	4.9	A
119	SAGA FALCON IMO 9613848	55,596	2012	200 m	STX - 5S60ME-C8	4.9	A
120	AFRICAN RAVEN IMO 9700287	37,711	2014	183 m	Hitachi - 6S46ME-C8.3	4.9	A
121	TATUNG IMO 9811921	37,685	2018	180 m	MAN - 6S50ME-C8	4.9	A
125	DEVBULK KAYA IMO 9530711	40,527	2012	185 m	Hitachi - 6S46MC-CMKVIII	4.9	A
124	SAGA DISCOVERY IMO 9317418	46,618	2006	199 m	Diesel United - 7RTA52	4.9	A
123	AMBER CONFIDENCE IMO 9866550	37,720	2020	180 m	MAN - 6S46ME-B8	4.9	A
122	OPTIMANA IMO 9253856	57,599	2003	212 m	6S60MC	4.9	A
126	LOUISE IMO 9470301	37,207	2012	178 m	Akasaka - 6UEC52LA	4.9	A
127	TUJU ARROW IMO 9443920	72,863	2010	225 m	Kawasaki - 6S60MC-C	4.9	A
128	CANADA PEARL IMO 9659749	45,566	2014	183 m	MAN - 6S50MC-C8	5.0	A
130	SAGA VOYAGER IMO 9233454	46,882	2001	199 m	Sulzer - 7RTA52	5.0	A
129	SAGA ODYSSEY IMO 9401788	46,500	2008	199 m	Diesel United - 7RTA52U	5.0	A
131	POLSTEAM PILE IMO 9971886	37,592	2024	200 m	MAN-B&W 5S50ME-C9	5.0	A
132	DRINA S IMO 9635743	38,037	2012	180 m	MAKITA - 6S46MC-C	5.0	A
133	VELVET IMO 9782651	37,324	2021	180 m	MAN - 6S50ME-B9.3	5.0	A
134	BBC MARS IMO 9947770	40,297	2022	180 m	CSIC Diesel Engine Co Ltd 5S60ME-C9	5.0	A
135	PUFFIN ARROW IMO 9566605	62,967	2011	200 m	MAN - 6S50MC-CMKVIII	5.0	A
137	STAR HARMONIA IMO 9103130	46,600	1998	198 m	6S60MC	5.0	A
136	HOYANGER IMO 9100073	50,194	1995	213 m	MAN - 6L23/30	5.0	A
139	SAGA MONAL IMO 9117739	56,801	1996	200 m	6S60MC	5.0	A
138	GREEN HELSINKI IMO 9976068	64,986	2023	227 m	MAN-B&W 6S60ME-C10	5.0	A
141	STAR KINN IMO 9396141	49,850	2010	209 m	Hyundai - 5 S 60 MC-C	5.1	A
140	STAR JAVA IMO 9310513	44,692	2006	198 m	Mitsui - 6S60MC	5.1	A
142	SAGA FUTURE IMO 9613836	55,596	2012	200 m	STX - 5S60MC-C8	5.1	A
143	POLSTEAM KOPROWO IMO 9971862	37,592	2024	200 m	MAN-B&W 5S50ME-C9	5.1	A
144	STAR HANSA IMO 9103128	46,428	1995	198 m	Mitsui - 6S60MC	5.1	A
148	UNI BLOSSOM IMO 9816567	37,634	2018	180 m	MAN - 6S46MC-C	5.1	A
147	POLSTEAM LEBSKO IMO 9971874	37,574	2024	200 m	MAN-B&W 5S50ME-C9	5.1	A
146	ADASUN IMO 9747053	34,483	2017	180 m	MAN - 6S46ME-B8	5.1	A
145	PANAMANA IMO 9401805	58,022	2010	212 m	Kawasaki - 6S60MC	5.1	A
150	POLSTEAM INSKO IMO 9984833	37,630	2025	200 m	MAN-B&W 5S50ME-C9	5.1	A
149	STAR LYSEFJORD IMO 9616840	50,728	2014	204 m	MAN - 5S60ME-C8	5.1	A

Page 3 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.