Most Emission-Efficient Oil Tankers

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)

#643 of 1,789 oil tankers

CO₂ intensity

3.5 g CO₂/dwt·nm

vs segment average (5.1)

-32% 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

1,826

vessels ranked

1.36

greenest (g CO₂/t·nm)

4.12

segment median

#	Vessel	Size (DWT)	Built	Length	Main Engine	Carbon intensity — AER (g CO₂/dwt·nm)	Grade
604	EAGLE LE HAVRE IMO 9795103	113,808	2017	250 m	Hyundai - 6X62	3.4	B
603	DELTA ATLANTICA IMO 9419101	161,762	2011	274 m	Hyundai - 6S70MC-C	3.4	B
602	CIELO DI CAGLIARI IMO 9781281	74,999	2018	228 m	Hyundai - 6G60ME-C9	3.4	B
601	STI LAVENDER IMO 9838254	109,999	2019	250 m	CSSC - 6G60ME-C9	3.4	B
607	MINERVA KARTERIA IMO 9787170	114,780	2018	250 m	Mitsui - 6G60ME-C9	3.4	B
609	MINERVA MARINA IMO 9411939	157,954	2009	274 m	Hyundai - 6S70MC-C	3.4	B
606	ANTARCTIC IMO 9315185	163,216	2007	274 m	Hyundai - 6S70MC-C MK7	3.4	B
605	VAIL SPIRIT IMO 9399478	157,048	2006	274 m	Doosan - 6S70MC-C	3.4	B
608	MARLIN LA PLATA IMO 9823560	114,752	2022	250 m	STX - 6G60ME-C9	3.4	B
611	VELOS EMERALD IMO 9402213	115,042	2008	243 m	MAN - 6S60MC-C	3.4	B
610	NISSOS TINOS IMO 9886782	157,447	2021	274 m	6X72	3.4	B
613	LEVANTINE SEA IMO 9815616	114,218	2018	249 m	MAN - 6G60ME-9.5 (Tier III)	3.4	B
615	CASTRO ALVES IMO 9547673	115,727	2018	249 m	Doosan - 6S60ME-C	3.4	B
612	CAPTAIN PARIS IMO 9692844	113,876	2014	252 m	HHI - 6G60ME-C9.2	3.4	B
616	SEACALM IMO 9773753	112,119	2017	237 m	Mitsui - 6G60ME-C9.2	3.4	B
614	NORDIC LIGHT IMO 9436446	158,475	2010	274 m	MAN - 6S70MC-C	3.4	B
618	LUZON SPIRIT IMO 9572276	109,581	2011	243 m	Hudong Heavy Machinery - 7 S 60 MC	3.4	B
617	FRONT CHEETAH IMO 9686637	109,900	2016	250 m	MAN - 6S60ME-C8	3.4	B
620	TIANLONG SPIRIT IMO 9378369	159,021	2009	275 m	MAN - 6S70MC	3.4	B
619	SEAWAYS SHENANDOAH IMO 9607966	112,691	2014	250 m	MAN - 6S60ME-C8	3.4	B
623	MINERVA SYMPHONY IMO 9304605	159,450	2006	277 m	Mitsui - MAN B & W 6S70MC-C	3.4	B
625	TILOS I IMO 9800271	149,999	2018	274 m	CSSC - 6G70ME-C9	3.4	B
622	DIMITRIS P IMO 9565950	157,740	2011	274 m	HHI - 6S70MC-C7	3.4	B
627	GH HOLIDAY IMO 9761528	157,543	2014	276 m	CSSC - 6G70ME-C9	3.4	B
626	MINERVA ZOE IMO 9800568	109,900	2019	250 m	MAN - 6G60ME-C9.5 (Tier II)	3.4	B
621	MARAN PENELOPE IMO 9402914	158,266	2009	274 m	HHI - 6S70MC-C8	3.4	B
624	PACIFIC DIAMOND IMO 9893046	113,306	2021	250 m	HSD Engine Co. Ltd. 6X62DF	3.4	B
629	SEAMAJESTY IMO 9601223	158,322	2012	274 m	HHI - 6S70MC-C8	3.5	B
628	SAMSARA IMO 9792228	159,855	2017	274 m	Hyundai - 6G70ME-C9	3.5	B
630	YASA GOLDEN MARMARA IMO 9337341	110,769	2008	246 m	Mitsui - 7S60MC	3.5	B
631	GHAT IMO 9930105	115,519	2022	250 m	6G60ME-C9-EGRBP	3.5	B
635	ATLANTIC JADE IMO 9892987	109,325	2019	250 m	Hyundai Heavy Industries Co. Ltd. 6G60ME-C9.5	3.5	B
634	EAGLE HANOVER IMO 9398723	114,014	2010	250 m	Hyundai - 7 S 60 MC	3.5	B
633	EURO IMO 9567702	157,539	2012	274 m	HHI - 6S70MC-C7	3.5	B
632	ADVANTAGE ANGEL IMO 9779953	113,563	2017	250 m	STX - 6G60ME-C9	3.5	B
636	ORCA PEARL IMO 9402249	114,821	2009	246 m	Mitsui - 6S60MC-C	3.5	B
642	ABLIANI IMO 9693068	109,999	2013	250 m	Doosan - 6G60ME-C9	3.5	B
641	POLAR BRIGHT IMO 9732395	109,999	2018	250 m	Hyundai - 6G60ME-C9.5 (Tier II)	3.5	B
640	VST LYRA IMO 9740471	109,980	2018	250 m	DALIAN MARINE - 6G60ME-C9	3.5	B
637	TORM GITTE IMO 9426312	119,456	2010	250 m	Hyundai - 6S70MC-C	3.5	B
639	PROTEUS REBECCA IMO 9914682	109,999	2022	250 m	Wärtsilä - 6X62DF	3.5	B
638	ARCTIC IMO 9315173	163,216	2007	274 m	Hyundai - 6S70MC-C MK7	3.5	B
650	IONIC ALTHEA IMO 9728435	114,737	2016	250 m	MAN - 6G60ME-C9.2 - TierII	3.5	B
649	NICOLAOS IMO 9429297	164,758	2010	274 m	MAN - 6S70MC-C	3.5	B
648	KRITI HERO IMO 9887308	158,005	2021	274 m	MAN - 6G70ME-C9	3.5	B
647	PENTATHLON IMO 9438406	158,475	2009	274 m	Doosan - 6S70MC-C	3.5	B
646	MARLIN LE HAVRE IMO 9829904	111,000	2018	250 m	CSSC - 6G60ME-C9	3.5	B
645	EUROLEADER IMO 9290385	159,062	2005	274 m	Hyundai - HYUNDAI-MAN B&W 6S70ME-C	3.5	B
644	STI SYMPHONY IMO 9719692	109,999	2016	249 m	MAN - 6G60ME-C9	3.5	B
643	EBN HAWKEL IMO 9874507	112,003	2021	237 m	MAN - 6G60ME-C9.2	3.5	B

Page 13 of 36 — 1,789 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.