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)

#173 of 2,380 general cargos

CO₂ intensity

5.3 g CO₂/dwt·nm

vs segment average (13.96)

-62% 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
151	HARDANGER IMO 9079119	50,198	1995	213 m	MAN - 6L23/30	5.1	A
152	SSI PROVIDENCE IMO 9883065	37,899	2020	180 m	MAN - 5S50ME-C9	5.1	A
153	SAGA JANDAIA IMO 9200421	47,027	1998	199 m	Sulzer - 7RTA52	5.2	A
154	STAR ISTIND IMO 9182954	46,428	1999	198 m	6S60MC	5.2	A
156	STAR GATE IMO 9400875	32,280	2009	177 m	Mitsubishi - 6UEC52LA	5.2	A
155	JACAMAR ARROW IMO 9007532	46,998	1992	199 m	Sulzer - 7RTA52	5.2	A
157	SAGA FRONTIER IMO 9343510	46,500	2007	199 m	Diesel United - 7RTA52	5.2	A
158	STAR KVARVEN IMO 9396153	49,856	2010	209 m	Hyundai - 5 S 60 MC-C	5.2	A
160	SAGA WIND IMO 9074078	47,053	1994	199 m	Sulzer - 7RTA52	5.2	A
159	INLAND SEA IMO 9675731	37,543	2014	180 m	MAN - 6S46MC-C	5.2	A
161	ATLAS S IMO 9491575	34,478	2011	177 m	Mitsubishi - 6UEC45LSE	5.2	A
162	SAGA ENTERPRISE IMO 9343481	46,550	2006	199 m	Diesel United - 7RTA52	5.2	A
164	DARIUS IMO 9757943	33,426	2017	180 m	Mitsubishi - 6UEC45LSE	5.2	A
163	EDGAR OLDENDORFF IMO 9794484	38,545	2017	180 m	Yichang - 5S50ME-B9	5.2	A
165	STAR MAJESTY IMO 9355525	50,790	2009	190 m	MAN - 5S60MC-C	5.2	A
166	STAR MAIA IMO 9189940	50,655	1998	195 m	Mitsubishi - 6UEC60LSII	5.3	A
167	JAMNO IMO 9767716	36,609	2018	200 m	—	5.3	A
168	BERGE SNAEFELL IMO 9816593	37,739	2018	180 m	MAKITA - 6S46MC-C	5.3	A
170	BRAVE ARSENAL IMO 9616101	33,383	2013	180 m	Mitsubishi - 6UEC45LSE	5.3	A
169	STAR HIDRA IMO 9071569	46,547	1994	198 m	6S60MC	5.3	A
171	SSI MARVELOUS IMO 9615327	37,062	2013	178 m	Akasaka - 6UEC52LA	5.3	A
172	STAR LYGRA IMO 9616838	50,741	2013	204 m	MAN - 5S60ME-C8	5.3	A
174	SAGA FUJI IMO 9609457	55,973	2013	200 m	Mitsubishi - 7UEC50LSII	5.3	A
173	BERGE GALDHOPIGGEN IMO 9753284	38,907	2017	180 m	Wärtsilä - 5RT-flex50D	5.3	A
175	BERGE SHARI IMO 9713208	34,534	2016	180 m	Mitsubishi - 6UEC45LSE-Eco-B2	5.3	A
176	SAGA JOURNEY IMO 9363637	46,500	2007	199 m	Sulzer - 7RTA52	5.3	A
178	SSI RELIANCE IMO 9655224	36,058	2015	180 m	Wärtsilä - 5RT-flex50	5.3	A
177	QUETZAL ARROW IMO 9007544	46,998	1992	199 m	Diesel United - 7RTA52	5.3	A
181	FEDERAL RUHR IMO 9766176	36,575	2017	200 m	Jiangsu Antai Power Co. Ltd. 5G50ME-B9	5.4	A
180	MOUNT HIKURANGI IMO 9580039	33,030	2013	176 m	Mitsubishi - 6UEC45LSE	5.4	A
179	SIDER MONTEDIPROCIDA IMO 9868443	37,661	2020	180 m	Mitsui - 6S46ME-B8	5.4	A
182	WECO JOSEFINE IMO 9779020	38,592	2018	180 m	Mitsui - 6S50ME-B8	5.4	A
184	AFRICAN GROUSE IMO 9755737	37,700	2015	183 m	Hitachi - 6S46ME-B8.3	5.4	A
183	SAGA CREST IMO 9014066	47,069	1994	199 m	Sulzer - 7RTA52	5.4	A
185	NEGMAR CICEK IMO 9542685	31,997	2011	176 m	Mitsubishi - 6UEC45LSE	5.4	A
186	VICTORIA IMO 9336828	50,223	2006	190 m	STX - 6 S 50 MC-C	5.4	A
189	POLSTEAM DABIE IMO 9971850	37,592	2024	200 m	MAN-B&W 5S50ME-C9	5.4	A
188	BALKAN MARIN IMO 9416434	38,070	2010	180 m	STX - 6S46MC-C	5.4	A
187	COOL HERO IMO 9609354	34,481	2015	176 m	Mitsubishi - 6UEC45LSE	5.4	A
190	HERANGER IMO 9079121	50,198	1995	213 m	MAN - 6L23/30	5.4	A
192	SPICA ETERNITY IMO 9832468	36,908	2019	180 m	MAN - 5S50MC-C8	5.4	A
191	SAGA FANTASY IMO 9658953	55,973	2013	200 m	Diesel United - 6RT-flex50	5.4	A
195	TIBERBORG IMO 9546473	21,301	2013	172 m	Wärtsilä - 6L46F	5.4	A
194	BC AMBITION IMO 9908358	37,982	2021	180 m	MAKITA - 6S50ME-C8	5.4	A
193	SAGA ADVENTURE IMO 9317406	46,627	2005	199 m	Diesel United - 7RTA52	5.4	A
196	JETOUR IMO 9317377	54,881	2006	190 m	Kawasaki - 6S50MC-C	5.4	A
197	SUNNY GRACE IMO 9343522	52,223	2006	188 m	Mitsubishi - 6UEC50LSII	5.4	A
199	SAGA ANDORINHA IMO 9197002	47,027	1998	199 m	Diesel United - 7RTA52	5.5	A
198	DEMA M IMO 9255074	32,259	2003	172 m	Mitsubishi - 6UEC52LA	5.5	A
200	STAR MINERVA IMO 9355513	50,757	2008	190 m	Kawasaki - 5S60MC-C	5.5	A

Page 4 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.