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)

#219 of 1,190 general cargos

CO₂ intensity

5.9 g CO₂/dwt·nm

vs segment average (10.91)

-46% 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
202	BERGE SNAEFELL IMO 9816593	37,739	2018	180 m	MAKITA - 6S46MC-C	5.8	A
201	COOL HERO IMO 9609354	34,481	2015	176 m	Mitsubishi - 6UEC45LSE	5.8	A
203	AMERICA PEARL IMO 9659751	45,556	2014	183 m	MAN - 6S50MC-C8	5.8	A
205	NORD BRAVE IMO 9473690	33,745	2011	180 m	Mitsubishi - 6UEC45LSE	5.8	A
204	POPLAR ARROW IMO 9235141	47,852	2005	190 m	H. Cegielski - Poznan SA 5S60MC	5.8	A
206	TIAN SHOU IMO 9704752	38,134	2016	190 m	Wärtsilä - 6RT-flex50	5.8	A
207	INDIANA IMO 9186211	44,982	2000	198 m	6S60MC	5.8	A
208	AMBER STAR.GR IMO 9801160	37,692	2017	180 m	MAKITA - 6S50ME-C8	5.8	A
209	BC LARA IMO 9598024	38,494	2011	183 m	MAKITA - 6S50MC-C	5.8	A
210	ISABELA ISLAND IMO 9791884	37,528	2017	180 m	MAKITA - 6S46MC-C	5.8	A
211	LUCKY FINDER IMO 9393620	37,268	2009	178 m	Akasaka - 6UEC52LA	5.9	A
212	JAMNO IMO 9767716	36,609	2018	200 m	—	5.9	A
213	CANADA PEARL IMO 9659749	45,566	2014	183 m	MAN - 6S50MC-C8	5.9	A
214	NACC INDIAN IMO 9116448	16,061	1996	139 m	MAK/Caterpillar - 6M32	5.9	A
215	LA LOUISE IMO 9470301	37,207	2012	178 m	Akasaka - 6UEC52LA	5.9	A
216	SAGA DISCOVERY IMO 9317418	46,618	2006	199 m	Diesel United - 7RTA52	5.9	A
217	STAR HIDRA IMO 9071569	46,547	1994	198 m	6S60MC	5.9	A
218	SSI RELIANCE IMO 9655224	36,058	2015	180 m	Wärtsilä - 5RT-flex50	5.9	A
219	TIAN JIAN IMO 9722754	37,979	2016	190 m	Hudong Heavy Machinery - 6RT-flex50-B	5.9	A
222	HOLLAND PEARL IMO 9742455	45,224	2016	183 m	Mitsui - 6S50MC-C8	5.9	A
221	TIBERIUS IMO 9665841	33,383	2013	177 m	Mitsubishi - 6UEC45LSE	5.9	A
220	FEDERAL MOSEL IMO 9766188	36,575	2017	200 m	Jiangsu Antai Power Co. Ltd. 5G50ME-B9	5.9	A
223	WECO JOSEFINE IMO 9779020	38,592	2018	180 m	Mitsui - 6S50ME-B8	5.9	A
224	DEVBULK SALIHA IMO 9449871	30,124	2011	179 m	MAKITA - 6S42MC	6.0	A
225	JACAMAR ARROW IMO 9007532	46,998	1992	199 m	Sulzer - 7RTA52	6.0	A
227	STAR ISFJORD IMO 9182978	45,740	2000	198 m	6S60MC	6.0	A
226	SAGA JOURNEY IMO 9363637	46,500	2007	199 m	Sulzer - 7RTA52	6.0	A
228	SIROCO IMO 9317705	37,534	2006	178 m	Akasaka - AKASAKA-MISTUBISHI 6UEC52LA	6.0	A
229	IVS MERLIN IMO 9604847	38,468	2011	183 m	Mitsui - 6S50MC-C	6.0	A
231	REGIUS IMO 9737113	33,395	2016	180 m	Mitsubishi - 6UEC45LSE	6.0	A
230	TIAN LE IMO 9722730	37,993	2016	190 m	Hudong Heavy Machinery - 6RT-flex50-B	6.0	A
235	AGIA CHARIS IMO 9605097	38,055	2012	180 m	MAN - 6S46MC-C	6.0	A
234	RADIUS IMO 9526710	36,976	2012	178 m	Akasaka - 6UEC52LA	6.0	A
233	FEDERAL ALSTER IMO 9766164	36,583	2016	200 m	Jiangsu Antai Power Co. Ltd. 5G50ME-B9	6.0	A
232	FIORA TOPIC IMO 9728461	34,356	2015	180 m	MAN - 6S46ME-B8.3	6.0	A
236	BERGE ANNUPURI IMO 9713193	34,536	2016	180 m	Mitsubishi - 6UEC45LSE-Eco-B2	6.0	A
237	NIOVI.GR IMO 9827322	34,730	2019	180 m	Mitsubishi - 6UEC45LSE-Eco-B2	6.0	A
238	21 SUNNY IMO 9615107	38,109	2012	180 m	MAN - 6S46MC-C	6.0	A
239	ASPEN ARROW IMO 9423566	53,022	2010	196 m	MAN - 7S50MC-C	6.1	B
241	KERASIA S IMO 9496185	33,170	2011	177 m	Mitsubishi - 6UEC45LSE	6.1	B
240	BIRCH ARROW IMO 9419242	52,998	2009	196 m	MAN - 7S50MC-C	6.1	B
243	OCEAN S IMO 9086320	26,411	1996	169 m	Hudong Heavy Machinery - 5L50MC	6.1	B
242	SOUTH SPIRIT IMO 9171125	29,482	1998	170 m	Mitsubishi - 5UEC52LS	6.1	B
245	MSC CALEDONIA II IMO 9262546	35,079	2002	188 m	Sulzer - 6RTA48T-B	6.1	B
244	EDWINE OLDENDORFF IMO 9717668	38,617	2012	180 m	MAN - 5S50ME-B9	6.1	B
247	LJUTA IMO 9672210	34,358	2014	180 m	Mitsubishi - 6UEC45LSE	6.1	B
246	AMELIE IMO 9647289	34,650	2013	180 m	LINSHAN MARINE DIESEL CO.LTD. 5RT-FLEX 50	6.1	B
250	AGIA PARASKEVI IMO 9604794	38,238	2011	180 m	MAN - 6S46MC-C	6.1	B
249	MANTA NILGUN IMO 9553024	33,671	2011	180 m	Mitsubishi - 6UEC45LSE	6.1	B
248	STAR ISTIND IMO 9182954	46,428	1999	198 m	6S60MC	6.1	B

Page 5 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.