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)

#1,424 of 3,436 bulk carriers

CO₂ intensity

4.1 g CO₂/dwt·nm

vs segment average (4.71)

-13% 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

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
1401	GLAFKOS IMO 9696448	63,519	2016	200 m	MAN - 5S60ME-C8	4.1	C
1400	HSL KENSINGTON IMO 9950648	64,452	2023	200 m	Mitsui E&S Machinery Co., Ltd. Tamano Machinery Factory	4.1	C
1399	ZOITSA SIGALA IMO 9700861	63,500	2014	200 m	Hudong Heavy Machinery - 5S60ME-C8 Tier II	4.1	C
1398	KONSTANTINOS D IMO 9972608	63,516	2024	200 m	MAN - 6G50ME-C9	4.1	C
1397	AMANI IMO 9729910	61,436	2016	200 m	Hudong Heavy Machinery - 6S50ME-B9	4.1	C
1406	KIRA OLDENDORFF IMO 9867566	81,290	2020	228 m	Yichang - 6S60ME-C8 (Tier II)	4.1	C
1409	TRAMP LADY IMO 9286621	76,294	2005	225 m	MITSUI ENGINEERING 6S60MC	4.1	C
1408	AGIOS MAKARIOS IMO 9474709	80,929	2017	229 m	Doosan - 7S50MC-C	4.1	C
1410	ALEXANDROS P. IMO 9723045	63,127	2017	200 m	HHM Shangchuan Diesel 5S60ME-C8 Tier II	4.1	C
1407	THRASYVOULOS V IMO 9767493	61,214	2016	200 m	Hitachi - 6S50ME-B9	4.1	C
1413	EQUINOX EAGLE IMO 9711298	61,208	2015	200 m	MAN - 6S50ME-B9	4.1	C
1412	PLANA IMO 9835769	47,096	2019	190 m	MAN - 5G50ME-C9	4.1	C
1411	YANGZE 8 IMO 9725732	63,515	2014	200 m	Wärtsilä - 5RT-flex58T	4.1	C
1415	KAVO PERDIKA IMO 9584889	58,740	2013	197 m	MAN - 6S50MC-C7	4.1	C
1414	STAR ELIZABETH IMO 9917488	82,403	2021	229 m	MAN - 6S60ME-C8.2	4.1	C
1417	SEAHABIT IMO 9974400	63,264	2024	200 m	MAN-B&W 6G50ME-C9	4.1	C
1419	FEDERAL MASAMUNE IMO 9908310	62,464	2021	200 m	Mitsui - 6S50ME-B9	4.1	C
1416	CL FUZHOU HE IMO 9890630	63,125	2021	200 m	MAN - 6S60ME-C8	4.1	C
1421	JAHAN I IMO 9817535	61,221	2018	200 m	Mitsui - 6S50ME-B9	4.1	C
1420	GREAT QIN IMO 9766918	64,928	2017	200 m	Kawasaki - 6G50ME-B9	4.1	C
1418	NEW EXPLORER IMO 9481489	79,448	2014	229 m	MAN - 5S60MC-C8	4.1	C
1423	MARKET COOPER IMO 9874557	61,223	2015	200 m	MAN - 6S50ME-B9	4.1	C
1422	LOCARNO IMO 9461453	82,188	2011	229 m	MAN - 7S50MC-C	4.1	C
1424	ONE OCEAN IMO 9460904	82,654	2009	229 m	MAN - 7S50MC-C	4.1	C
1429	SPAR PAVO IMO 9735012	63,266	2016	200 m	Doosan - 5S60ME-C8	4.1	C
1432	XIN HUA IMO 9316153	55,435	2005	190 m	DALIAN MARINE - 6S50MC-C	4.1	C
1428	XIN BO IMO 9324655	52,424	2006	190 m	Mitsui - 6S50MC	4.1	C
1435	LILAS CALM IMO 9633264	61,473	2012	200 m	Mitsui - 6S50MC-C8	4.1	C
1434	ARTEMIS E IMO 9657789	63,200	2013	200 m	Doosan - DOOSAN-MAN 5S60ME-C8.1-TII	4.1	C
1433	STAR AMETHYST IMO 9523251	82,123	2009	229 m	Mitsui - 6S60MC-C	4.1	C
1427	VAN HANNAH IMO 9965021	63,926	2023	200 m	MAN - 6G50ME-C9	4.1	C
1431	GRAMBA IMO 9917048	61,233	2021	200 m	MAN - 6S50ME-B9	4.1	C
1426	ALGOMA VICTORY IMO 9138109	70,034	2000	225 m	MAN - 6S60MC	4.1	C
1425	VICTORIA IMO 9738466	61,613	2016	200 m	MAN - 6S50ME-B9	4.1	C
1430	ALASIA IMO 9700873	61,311	2014	200 m	MAN - 6S50MC-C8	4.1	C
1438	GOOD HEART IMO 9669380	62,996	2014	200 m	Doosan - 5G60ME-C9	4.1	C
1437	SM SAMCHEONPO IMO 9842487	80,943	2019	229 m	MAN - 6S60ME-C	4.1	C
1436	ZHENG ZHI IMO 9596090	81,804	2013	229 m	MAN - 5S60ME-C	4.1	C
1442	GREAT PROGRESS IMO 9728655	63,377	2015	200 m	MAN - 5S60ME-C8	4.1	C
1441	NEW VENTURE IMO 9497622	79,415	2014	229 m	MAN - 7S50MC-C8.2	4.1	C
1443	YM IMPRESSION IMO 9764001	81,914	2016	229 m	Mitsui - 6S60MC-C	4.1	C
1440	SANTA BRISA IMO 9951771	63,367	2023	200 m	MAN-B&W 6S50ME-B9	4.1	C
1439	CRIMSON SPOONBILL IMO 9701712	60,033	2016	200 m	MAN - 6S50ME-B9.3	4.1	C
1450	PACIFIC VALOR IMO 9712503	63,564	2015	200 m	MAN - 5S60MC-C8	4.1	C
1449	WECO TATI IMO 1027017	63,590	2025	200 m	MAN-B&W 6S50ME-C9	4.1	C
1448	MAMA STRENGTH IMO 9673525	75,610	2014	225 m	MAN - 5S60ME-C8	4.1	C
1447	PANAFRICAN IMO 9350343	83,690	2008	229 m	MAN - 6S60MC-C	4.1	C
1446	IOANNIS IMO 9760158	60,402	2016	200 m	Mitsui - 6S50ME-B9	4.1	C
1445	ST. SOFIA IMO 9799630	60,424	2018	200 m	Mitsui - 6S50ME-B9.3	4.1	C
1444	KMAX EMPEROR IMO 9477426	92,025	2011	230 m	STX - 7 S 50 MC-C	4.1	C

Page 29 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.