Most Emission-Efficient Bulk Carriers

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)

#3,239 of 3,436 bulk carriers

CO₂ intensity

7.5 g CO₂/dwt·nm

vs segment average (4.71)

+58% higher

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

3,507

vessels ranked

1.74

greenest (g CO₂/t·nm)

4.46

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
3201	MOTTLER IMO 9477828	30,807	2009	185 m	Yichang - 6 S 46 MC-C	7.2	E
3202	JAOHAR ADAM IMO 9276743	29,721	2003	171 m	MAKITA - 6S42MC	7.2	E
3203	AT 27 IMO 9136539	26,551	1997	170 m	Mitsubishi - 5UEC50LSII	7.2	E
3204	SEAGLASS II IMO 9498925	29,124	2008	170 m	MAN - 5S50MC	7.2	E
3205	BRANT IMO 9393151	30,777	2008	185 m	Yichang - 6 S 46 MC-C	7.2	E
3206	UBC THESSALONIKI IMO 9718454	37,567	2015	180 m	Yichang - 5RT-flex50	7.2	E
3207	TINA S IMO 9498432	34,689	2011	180 m	Doosan - 5S50MC-C	7.3	E
3208	NORD VIND IMO 9573921	28,225	2011	169 m	MAN - 6S42MC	7.3	E
3209	ALYTUS IMO 9544750	36,782	2011	186 m	MAN - 6S46MC-C	7.3	E
3210	MARIA G IMO 9358369	37,249	2007	200 m	Hudong Heavy Machinery - 6S46MC-C	7.3	E
3211	GULNAK IMO 9579028	35,000	2011	180 m	H. CEGIELSKI - POZNAN S.A. 6S42MC	7.3	E
3212	RUDDY IMO 9459981	30,930	2009	185 m	STX - 6S46MC-C	7.3	E
3213	ALANYA-M IMO 9158159	41,327	2004	186 m	6L50MC-C	7.3	E
3214	SANN TRO IMO 9110315	27,327	1995	167 m	Hyundai - 5L50MC	7.3	E
3215	RAFINA IMO 9159737	28,747	1997	177 m	Mitsubishi - 5UEC52LA	7.3	E
3216	SEAHORSE IMO 9594456	32,962	2012	177 m	STX - 6S42MC	7.3	E
3217	AFRICAN MAGNOLIA IMO 9666455	28,345	2016	175 m	MAN - 5S46ME-B8	7.3	E
3218	MANDARIN IMO 9239812	26,735	2003	186 m	Hudong Heavy Machinery - 7S42MC MK6	7.3	E
3219	ORIENT PRIDE IMO 9450739	34,402	2010	180 m	Doosan - 5S50MC-C	7.3	E
3220	OBORISHTE IMO 9415167	29,999	2010	190 m	Hitachi - 6RT-FLEX50B	7.3	E
3221	AMIRA SOPHIE II IMO 9672208	34,358	2014	180 m	Mitsubishi - 6UEC45LSE	7.3	E
3222	MDS APHRODITE IMO 9480708	36,454	2007	180 m	Doosan - 5S50MC-C	7.3	E
3223	AEOLOS IMO 9228382	32,256	2001	172 m	Akasaka - 6UEC52LA	7.3	E
3224	CAPETAN VASSILIS II IMO 9580118	34,468	2010	180 m	SILLA METAL, PUSAN SOUTH KOREA MAN 5S50MC-C	7.3	E
3225	KOCATEPE S IMO 9470143	16,988	2008	151 m	Shaanxi Diesel Engine Heavy Industry Co. Ltd. 8PC2-5L	7.3	E
3226	ARGYROULA GS IMO 9491587	33,178	2011	177 m	Mitsubishi - 6UEC45LSE	7.4	E
3227	LUDOGORETS IMO 9415155	29,998	2010	190 m	Hitachi - 6RT-FLEX50B	7.4	E
3228	TRITON WIND I IMO 9621003	37,113	2013	190 m	Wärtsilä - 6RTA48T	7.4	E
3229	AMIRA RAFIF IMO 9300192	32,355	2004	177 m	Mitsubishi - 6UEC52LA	7.4	E
3230	LENA IMO 9757539	33,297	2016	177 m	Mitsubishi - 6UEC45LSE-Eco-B2	7.4	E
3231	NAVI VEGA IMO 9481099	35,896	2011	180 m	MAN - 5S50MC-C	7.4	E
3232	COYOTE IMO 9474216	35,010	2010	180 m	MAN - 6S46MC-C	7.4	E
3233	ALICIA G IMO 9459955	30,895	2011	185 m	STX - 6S46MC-C7	7.4	E
3234	SUNLIGHT IMO 9551351	28,346	2010	169 m	MAN - 6S42MC	7.4	E
3235	REK GRACE IMO 9445203	28,342	2008	169 m	MAKITA - 6S42MC	7.5	E
3236	AB BONITA IMO 9480564	33,810	2011	181 m	HHI - 6S42MC7	7.5	E
3237	MKK II IMO 9145229	21,470	1998	169 m	BRYANSK ENGINE WORKS 8 DKRN 42/136-10	7.5	E
3238	SOLINA IMO 9496252	30,182	2012	190 m	Sulzer - 7RTA48T-B	7.5	E
3239	CHARBEL 1 IMO 9598074	28,218	2011	169 m	MAN - 6S42MC	7.5	E
3240	NAVI MOON IMO 9385154	32,162	2008	176 m	Akasaka - 6UEC52LA	7.5	E
3241	CS CAPRICE IMO 9406104	30,487	2010	179 m	STX - 6S42MC MK7	7.5	E
3242	M/V MARIGOLD IMO 9668295	28,207	2013	169 m	MAKITA - 6S42MC	7.5	E
3243	SAFESEA SHAKTI IMO 9460277	35,957	2010	180 m	MAN - 6S46MC-C	7.5	E
3244	SOLARIS IMO 9474266	34,961	2011	180 m	MAN - 6S46MC-C	7.5	E
3245	AURORA VEGA IMO 9450820	34,372	2011	180 m	MAN - 5S50MC-C	7.5	E
3246	QUEST IMO 9530943	36,903	2011	186 m	HHI - 6S46MC-C7	7.5	E
3247	CHRISTINA SELMER IMO 9474278	34,983	2011	180 m	MAN - 6S46MC-C	7.5	E
3248	SCIO SPIRIT IMO 9502738	35,253	2009	180 m	MAN - 6S42MC	7.5	E
3249	SF CHALISA IMO 9502726	35,283	2009	180 m	STX - 6S42MC	7.5	E
3250	AETERNO IMO 9474228	34,954	2011	180 m	MAN - 6S46MC-C	7.5	E

Page 65 of 69 — 3,436 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.