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 2024. Lower is greener. Pick a segment and size class to see the greenest vessels first.

Segment rank (2024)

#3,228 of 3,531 bulk carriers

CO₂ intensity

7.3 g CO₂/dwt·nm

vs segment average (4.87)

+50% 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

3,604

vessels ranked

1.42

greenest (g CO₂/t·nm)

4.65

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
3201	EVER GALLANT IMO 9624328	28,206	2012	169 m	MAKITA - 6S42MC	7.2	E
3202	NJ EARTH IMO 9229996	37,180	2003	200 m	Hudong Heavy Machinery - 6S46MC-C	7.2	E
3203	WADI ALARAB IMO 9107681	64,214	1995	225 m	6S50MC	7.2	E
3204	AFRICAN MAGNOLIA IMO 9666455	28,345	2016	175 m	MAN - 5S46ME-B8	7.2	E
3205	MY LAMA IMO 9339791	28,409	2005	169 m	MAN - 6S42MC	7.2	E
3206	SEAGULL IMO 9452505	58,609	2010	196 m	Doosan - 6S50MC-C	7.2	E
3207	ELIKI IMO 9470325	28,228	2011	169 m	MAN - 6S42MC	7.2	E
3208	MESHKA IMO 9588380	35,829	2011	180 m	BRYANSK ENGINEERING WORKS 5S50MC-C	7.2	E
3209	LORD HAMMOUR IMO 9218088	28,471	2001	170 m	Mitsubishi - 5UEC52LA	7.2	E
3210	TAZ IMO 9703825	35,016	2015	180 m	MAN - 5S50ME-B9	7.2	E
3211	CALOBRA IMO 9739082	35,422	2015	180 m	MAN - 6S46ME-B8	7.2	E
3212	NANI K IMO 9694995	37,423	2014	180 m	MAN - 5S50ME-B9	7.2	E
3213	BELLA NADIA IMO 9118252	16,860	1997	143 m	Yichang - 6L35MC	7.2	E
3214	KESTREL S IMO 9489211	33,108	2010	177 m	MAN - 5S50MC-C	7.2	E
3215	PENELOPE L IMO 9714343	28,145	2015	169 m	MAN - 6S42MC	7.2	E
3216	AMANO-T IMO 9117832	27,359	1996	167 m	DOOSAN HEAVY INDUSTRIES & CONSTRUCTION, SEOUL SOUTH KOREA 5L50MC	7.3	E
3217	GREENTEC IMO 9493509	33,035	2008	180 m	STX - 6S42MC	7.3	E
3218	BOS COSTA IMO 9310616	28,709	2007	177 m	Mitsubishi - 5UEC52LA	7.3	E
3219	HANDY PERTH IMO 9628128	35,177	2013	180 m	MAN - 5S50MC-C	7.3	E
3220	NEW LEADER IMO 9471795	36,830	2011	187 m	MAN - 6S46MC-C	7.3	E
3221	ORAWA IMO 9386926	38,956	2009	190 m	Yichang - 6RTA48T-B	7.3	E
3222	MAJESTIC NOOR IMO 9138642	27,827	1997	175 m	Hudong Heavy Machinery - 5L50MC	7.3	E
3223	MOTHER M IMO 9626613	35,856	2012	180 m	Yichang - 6S50MC-C	7.3	E
3224	IOANNA D IMO 9634969	35,000	2012	180 m	STX - 6S42MC	7.3	E
3225	TRUE MARINER IMO 9599822	38,239	2011	180 m	MAN - 6S46MC-C	7.3	E
3226	COYOTE IMO 9474216	35,010	2010	180 m	MAN - 6S46MC-C	7.3	E
3227	ADAM-A IMO 9114543	28,458	1995	170 m	Akasaka - 5UEC52LA	7.3	E
3228	MARINOR IMO 9433559	56,784	2009	190 m	MAN - 6S50MC-C	7.3	E
3229	T SYMPHONY IMO 9611498	32,371	2011	180 m	MAN - 6S42MC	7.3	E
3230	WL ATLANTIC IMO 9489417	37,488	2010	180 m	STX - 6S46MC-C	7.3	E
3231	THEBE IMO 9697973	35,987	2014	180 m	MAN - 5S50ME-B9	7.3	E
3232	SAINT DIMITRIOS IMO 9486398	33,788	2011	181 m	HHI - 6S42MC7	7.3	E
3233	FRIENDLY ISLANDS IMO 9615042	28,387	2012	169 m	MAN - 6S42MC	7.3	E
3234	BOSPHORUS-M IMO 9359818	55,903	2006	190 m	Mitsui - 6S50MC-C	7.3	E
3235	YEOMAN BANK IMO 7422881	38,997	1982	205 m	Sulzer - 6RD90	7.3	E
3236	VALSAMITIS IMO 9629823	34,827	2012	180 m	STX - 6S42MC	7.3	E
3237	NJ CALLISTO IMO 9497452	31,796	2012	177 m	Yichang - 6UEC43LSII	7.3	E
3238	MILOS IMO 9138446	24,045	1997	154 m	Mitsubishi - 6UEC45LA	7.3	E
3239	T PRIME IMO 9611503	32,451	2011	180 m	MAN - 6S42MC	7.3	E
3240	POLARIS Z IMO 9109512	18,233	1995	148 m	MITSUI ENGINEERING 6L42MC	7.3	E
3241	ISOLDA D IMO 9588873	34,290	2011	180 m	Hyundai - 6S42MC	7.3	E
3242	VALERIO IMO 9244037	27,112	2003	166 m	Mitsui - 5L50MC	7.3	E
3243	DSM CASTOR IMO 9230000	35,000	2003	200 m	Hudong Heavy Machinery - 6S46MC-C	7.3	E
3244	ATROMITOS L IMO 9605073	28,227	2012	169 m	MAKITA - 6S42MC	7.3	E
3245	KOCIEWIE IMO 9423798	38,981	2009	190 m	Wärtsilä - 6RTA48T	7.3	E
3246	MARIA G IMO 9358369	37,249	2007	200 m	Hudong Heavy Machinery - 6S46MC-C	7.3	E
3247	WL UGLICH IMO 9674373	37,500	2014	180 m	MAN - 5S50ME-B9	7.3	E
3248	SHIMANAMI STAR IMO 9377717	28,447	2006	169 m	MAKITA - 6S42MC	7.4	E
3249	HAROUN BEY IMO 9082609	26,300	1995	169 m	5L50MC	7.4	E
3250	DELOS II IMO 9612375	35,898	2013	181 m	MAN - 6S42MC	7.4	E

Page 65 of 71 — 3,531 vessels

← Prev Next →

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.