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)

#247 of 2,380 general cargos

CO₂ intensity

5.8 g CO₂/dwt·nm

vs segment average (13.96)

-58% 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
202	NIOVI.GR IMO 9827322	34,730	2019	180 m	Mitsubishi - 6UEC45LSE-Eco-B2	5.5	A
201	BC PISTI IMO 9851359	39,287	2019	183 m	Mitsui - 6S46ME-B8	5.5	A
204	BERGE DAISETSU IMO 9713179	34,533	2015	180 m	Mitsubishi - 6UEC45LSE-Eco-B2	5.5	A
203	NARIE IMO 9767728	36,648	2018	200 m	—	5.5	A
206	ASTRO PROPUS IMO 9691498	38,271	2014	180 m	MAKITA - 6S46MC-C	5.5	A
205	PROPEL PROSPERITY IMO 9317690	37,504	2006	178 m	Akasaka - AKASAKA-MISTUBISHI 6UEC52LA	5.5	A
207	RIZABEY IMO 9197117	24,999	1999	160 m	Mitsui - 6S42MC	5.5	A
208	SAGA TUCANO IMO 9160803	47,032	1998	199 m	Diesel United - 7RTA52	5.5	A
209	POPLAR ARROW IMO 9235141	47,852	2005	190 m	H. Cegielski - Poznan SA 5S60MC	5.5	A
210	ASTERIUS IMO 9810769	33,358	2018	180 m	Mitsubishi - 6UEC45LSE-B2	5.5	A
211	OCEAN S IMO 9086320	26,411	1996	169 m	Hudong Heavy Machinery - 5L50MC	5.6	A
213	SIBAL IMO 9712620	33,364	2015	180 m	Mitsubishi - 6UEC45LSE	5.6	A
212	CETUS TIGER IMO 9606003	37,059	2013	178 m	MAKITA - 6S46MC-C8.2	5.6	A
214	HALOPHYLA IMO 9613329	57,440	2013	200 m	STX - 6 S 50 MC-C	5.6	A
215	WECO LAURA IMO 9877327	38,575	2020	180 m	Mitsui - 6S50ME-C	5.6	A
217	ESRA C IMO 9379662	33,257	2008	176 m	Akasaka - 6UEC52LA	5.6	A
216	ASTRO POLARIS IMO 9623051	37,054	2014	178 m	Mitsubishi - 6UEC45LSE	5.6	A
218	ELECTRA.GR IMO 9834844	37,323	2019	180 m	MAKITA - 6S46ME-B8	5.6	A
220	SAGA NAVIGATOR IMO 9371062	46,652	2007	199 m	Diesel United - 7RTA52	5.6	A
219	DEVBULK BEGUM IMO 9625607	30,124	2012	179 m	STX - 6S42MC7	5.6	A
221	YUAN FU IMO 9998030	61,646	2024	200 m	MAN-B&W 6G50ME-C9	5.6	A
222	ARACARI ARROW IMO 9008706	46,956	1992	199 m	Sulzer - 7RTA52	5.6	A
223	LADY ANDRIANE IMO 9832509	34,845	2020	180 m	MAN - 6S46ME-B8	5.6	A
225	ARBORELLA IMO 9613288	57,540	2012	200 m	STX - 6 S 50 MC-C	5.7	A
224	SAGA PIONEER IMO 9380764	46,559	2008	199 m	Diesel United - 7RTA52	5.7	A
226	REGIUS IMO 9737113	33,395	2016	180 m	Mitsubishi - 6UEC45LSE	5.7	A
227	LADY MONICA IMO 9392078	35,068	2009	180 m	Mitsubishi - 6UEC52LA	5.7	A
228	MANTA OMER MECIT IMO 9737058	38,167	2015	183 m	MAN - 6S46ME-B8	5.7	A
229	AVRA.GR IMO 9755866	34,930	2016	180 m	Akasaka - 6UEC45LSE-Eco-B2	5.7	A
230	DEVBULK DEMET IMO 9625592	30,124	2012	179 m	STX - 6S42MC7	5.7	A
231	NAGUAL IMO 9380829	37,277	2008	178 m	Akasaka - 6UE52LA	5.7	A
232	MANTA NILGUN IMO 9553024	33,671	2011	180 m	Mitsubishi - 6UEC45LSE	5.7	A
234	LJUTA IMO 9672210	34,358	2014	180 m	Mitsubishi - 6UEC45LSE	5.7	A
233	CENTURIUS IMO 9712618	33,367	2015	180 m	Mitsubishi - 6UEC45LSE-Eco	5.7	A
235	MANTA FATMA IMO 9604809	38,243	2012	180 m	MAKITA - 6S46MC-C7	5.7	A
237	PARLA IMO 9537977	35,732	2011	180 m	STX - 5S50MC-C	5.8	A
236	IRMA S IMO 9385063	32,295	2008	177 m	Mitsubishi - 6UEC52LA	5.8	A
238	OCEAN ARSENAL IMO 9635248	33,328	2013	180 m	Mitsubishi - 6UEC45LSE	5.8	A
239	ARIA IMO 9473597	32,216	2009	177 m	Mitsubishi - 6UEC52LA	5.8	A
242	IVS KESTREL IMO 9700926	32,768	2014	180 m	Mitsubishi - 6UEC45LSE	5.8	A
241	HYDRA DAWN IMO 9607447	35,390	2013	180 m	Wärtsilä - 5RT-flex50	5.8	A
240	STAR LINDESNES IMO 9593878	50,748	2013	204 m	Hyundai - 5S60ME-C8	5.8	A
244	PROPEL PASSION IMO 9473676	33,686	2011	180 m	Mitsubishi - 6UEC45LSE	5.8	A
243	HOLLAND PEARL IMO 9742455	45,224	2016	183 m	Mitsui - 6S50MC-C8	5.8	A
245	FALCON S IMO 9329423	37,406	2007	178 m	Akasaka - 6UEC52LA	5.8	A
246	DELICATA IMO 9613317	57,441	2013	200 m	STX - 6 S 50 MC-C	5.8	A
248	CHARISMA.GR IMO 9834856	37,295	2019	180 m	MAKITA - 6S46ME-B8.5	5.8	A
247	OSAKANA IMO 9253870	57,624	2004	212 m	Kawasaki - 6S60MC	5.8	A
250	STAR DALMATIA IMO 9548835	51,588	2011	200 m	Mitsubishi - 6UEC50LSE	5.8	A
249	BRASSIANA IMO 9613290	57,536	2012	200 m	STX - 6 S 50 MC-C	5.8	A

Page 5 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.