Chemical Tanker Emissions & Retrofit Radar
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.
CII band distribution
414 at D/E1,698 rated vessels · 175 of the D/E set dock within 12 months
Docking pipeline — D/E vessels per quarter
Windows estimated from the class-expiry docking model, not bookings.
Top eligible retrofit measures for this segment
| Measure | Eligible | CO₂ reduction | Capex band | Payback | Confidence |
|---|---|---|---|---|---|
| Propeller redesign / replacement | 1,299 | 5–10% | €400k–1,200k | — | vendor claim |
| Turbocharger cut-out | 968 | 1–3% | €80k–250k | — | vendor claim |
| Bulbous bow reprofiling | 929 | 2–6% | €300k–900k | — | vendor claim |
| Rotor sails (per unit) | 882 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 882 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Methanol dual-fuel conversion | 696 | 5–15% | €8,000k–20,000k | — | vendor claim |
Capex bands are indicative vendor/literature priors. Payback appears once price parameters are configured.
Retrofit opportunity in this segment
Retrofit prospects — worst band first
| Vessel | Band | Age | Drop year |
|---|---|---|---|
| MEHTAP · 25-60k | E | 18y | 2026 |
| MARIA IMMACULATA · <25k | E | 14y | 2026 |
| HARBOUR PROGRESS · <25k | E | 16y | 2026 |
| HERCULES SKY · <25k | E | 5y | 2026 |
| NAVE ATRIA · 25-60k | E | 14y | 2026 |
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 901 |
ICHESIA M
IMO 9436678
|
40,429 | 2009 |
10.9
|
D |
| 902 |
HOUYOSHI PARK
IMO 9725847
|
19,998 | 2016 |
10.9
|
D |
| 903 |
SH FREESIA
IMO 9505986
|
19,991 | 2011 |
10.9
|
D |
| 904 |
OCEAN AGLAIA
IMO 9182796
|
18,736 | 2002 |
10.9
|
D |
| 905 |
GOBY
IMO 9363833
|
19,994 | 2008 |
11.0
|
D |
| 906 |
MED ATLANTIC
IMO 9410533
|
26,234 | 2011 |
11.0
|
D |
| 907 |
FAIRCHEM FYNBOS
IMO 9914292
|
19,982 | 2021 |
11.0
|
D |
| 908 |
FAIRCHEM RESTIO
IMO 9920291
|
19,971 | 2022 |
11.0
|
D |
| 909 |
MELATI 5
IMO 9172258
|
31,963 | 1999 |
11.0
|
D |
| 910 |
STOLT CONFIDENCE
IMO 9102071
|
37,090 | 1996 |
11.0
|
D |
| 911 |
TG LEO
IMO 9640097
|
19,800 | 2012 |
11.0
|
D |
| 912 |
SONGA FALCON
IMO 9396012
|
25,418 | 2009 |
11.1
|
D |
| 913 |
CHEM HOUSTON
IMO 9705720
|
19,997 | 2014 |
11.1
|
D |
| 914 |
STOLT EFFORT
IMO 9178202
|
37,155 | 1999 |
11.1
|
D |
| 915 |
ORIENTAL VIOLA
IMO 9824928
|
16,293 | 2020 |
11.1
|
D |
| 916 |
EVA DIAMOND
IMO 9888144
|
19,880 | 2022 |
11.1
|
D |
| 917 |
SONGA BREEZE
IMO 9423645
|
19,999 | 2009 |
11.1
|
D |
| 918 |
CHEM ALTAMIRA
IMO 9705744
|
19,998 | 2015 |
11.1
|
D |
| 919 |
MIAMI
IMO 9304320
|
19,991 | 2005 |
11.1
|
D |
| 920 |
NINA AN
IMO 9451733
|
40,399 | 2010 |
11.1
|
D |
| 921 |
STOLT INSPIRATION
IMO 9102083
|
37,205 | 1997 |
11.1
|
D |
| 922 |
CHEM ARGON
IMO 9716004
|
19,993 | 2016 |
11.1
|
D |
| 923 |
STOLT INTEGRITY
IMO 9680097
|
38,853 | 2017 |
11.1
|
D |
| 924 |
CHEM ROTTERDAM
IMO 9640140
|
19,804 | 2014 |
11.1
|
D |
| 925 |
BLADE GALAXY
IMO 9692416
|
19,994 | 2014 |
11.2
|
D |
| 926 |
SILVER RAY
IMO 9493133
|
19,801 | 2013 |
11.2
|
D |
| 927 |
EVA USUKI
IMO 9865532
|
19,808 | 2020 |
11.2
|
D |
| 928 |
TIVOLI PARK
IMO 9780536
|
19,994 | 2018 |
11.2
|
D |
| 929 |
JAL SIDDHI
IMO 9323778
|
19,805 | 2006 |
11.2
|
D |
| 930 |
STOLT SURF
IMO 9168623
|
22,220 | 2000 |
11.2
|
D |
| 931 |
BIRDIE TRADER
IMO 9724099
|
19,822 | 2016 |
11.2
|
D |
| 932 |
HOPE A
IMO 9282821
|
40,095 | 2004 |
11.2
|
D |
| 933 |
MTM SHANGHAI
IMO 9345908
|
19,885 | 2006 |
11.2
|
D |
| 934 |
MAGENTA RAY
IMO 9829722
|
19,998 | 2019 |
11.3
|
D |
| 935 |
CHEMICAL CONTENDER
IMO 9847140
|
15,945 | 2018 |
11.3
|
D |
| 936 |
BEGONIA
IMO 9287297
|
20,622 | 2003 |
11.3
|
D |
| 937 |
FLOYEN
IMO 9749790
|
19,997 | 2016 |
11.3
|
D |
| 938 |
MTM ROTTERDAM
IMO 9477567
|
21,144 | 2011 |
11.3
|
D |
| 939 |
SINO STAR
IMO 9263693
|
46,219 | 2003 |
11.3
|
D |
| 940 |
EASTERLY AS OLIVIA
IMO 9340489
|
19,981 | 2007 |
11.3
|
D |
| 941 |
AMELIA
IMO 9624768
|
21,203 | 2011 |
11.3
|
D |
| 942 |
EASTERLY BEECH GALAXY
IMO 9340441
|
19,998 | 2007 |
11.3
|
D |
| 943 |
CHEM GALLIUM
IMO 9740782
|
19,973 | 2017 |
11.3
|
D |
| 944 |
ZHENG HE 3
IMO 9264465
|
19,997 | 2002 |
11.3
|
D |
| 945 |
CELSIUS MIDDELFART
IMO 9733349
|
19,997 | 2015 |
11.3
|
D |
| 946 |
STOLT BETULA
IMO 9266267
|
25,023 | 2003 |
11.4
|
D |
| 947 |
TERNSUND
IMO 9722390
|
14,847 | 2016 |
11.4
|
D |
| 948 |
BARBOUNI
IMO 9416020
|
19,822 | 2007 |
11.4
|
D |
| 949 |
SLOMAN HEBE
IMO 9809784
|
16,432 | 2019 |
11.4
|
D |
| 950 |
SONGA WINDS
IMO 9416109
|
19,954 | 2009 |
11.4
|
D |
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.
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.