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 2025. Lower is greener. Pick a segment and size class to see the greenest vessels first.
CII band distribution
415 at D/E1,698 rated vessels · 169 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 | 1,272 | 5–10% | €400k–1,200k | — | vendor claim |
| Turbocharger cut-out | 1,234 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 1,077 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 1,077 | route-dependent | €1,000k–2,500k | — | vendor claim |
| Bulbous bow reprofiling | 915 | 2–6% | €300k–900k | — | vendor claim |
| Methanol dual-fuel conversion | 686 | 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 | 18y | 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 |
|---|---|---|---|---|---|
| 851 |
PVT CLARA
IMO 9442548
|
20,831 | 2009 |
9.3
|
C |
| 852 |
BASILIS L
IMO 9290505
|
37,371 | 2005 |
9.3
|
C |
| 853 |
MAGNIFICA
IMO 9374234
|
40,248 | 2009 |
9.3
|
C |
| 854 |
HOPE A
IMO 9282821
|
40,095 | 2002 |
9.4
|
D |
| 855 |
PACIFICO
IMO 9876830
|
22,554 | 2022 |
9.4
|
D |
| 856 |
MTM SHANGHAI
IMO 9345908
|
19,885 | 2006 |
9.4
|
D |
| 857 |
SOLAR SHARNA
IMO 9877614
|
25,039 | 2018 |
9.4
|
D |
| 858 |
YC PANSY
IMO 9311256
|
20,645 | 2005 |
9.4
|
D |
| 859 |
BLUE ROSE
IMO 9335915
|
38,402 | 2007 |
9.4
|
D |
| 860 |
BIXBITE
IMO 9316610
|
39,999 | 2009 |
9.4
|
D |
| 861 |
MARVEL
IMO 9364930
|
38,513 | 2008 |
9.4
|
D |
| 862 |
FAIRCHEM PATHFINDER
IMO 9975301
|
26,300 | 2022 |
9.4
|
D |
| 863 |
GINGA LION
IMO 9278727
|
26,196 | 2004 |
9.4
|
D |
| 864 |
FAIRCHEM SWORD
IMO 9673678
|
19,993 | 2013 |
9.4
|
D |
| 865 |
ASIA LIBERTY
IMO 9752694
|
34,200 | 2019 |
9.4
|
D |
| 866 |
CHEMROUTE SKY
IMO 9508160
|
25,401 | 2010 |
9.4
|
D |
| 867 |
MTM SINGAPORE
IMO 9477529
|
19,996 | 2011 |
9.4
|
D |
| 868 |
ASP LILY
IMO 9542178
|
19,991 | 2011 |
9.4
|
D |
| 869 |
VALDERICE
IMO 9587843
|
37,583 | 2011 |
9.4
|
D |
| 870 |
CIELO DI CAPRI
IMO 9717278
|
39,043 | 2016 |
9.5
|
D |
| 871 |
BOW GLORY
IMO 9758038
|
22,354 | 2017 |
9.5
|
D |
| 872 |
BOW SUCCESS
IMO 9758090
|
22,346 | 2017 |
9.5
|
D |
| 873 |
SILVER RAY
IMO 9493133
|
19,801 | 2013 |
9.5
|
D |
| 874 |
CELSIUS MIDDELFART
IMO 9733349
|
19,997 | 2014 |
9.5
|
D |
| 875 |
BHARAT
IMO 9253595
|
40,128 | 2003 |
9.5
|
D |
| 876 |
MELDERSKIN
IMO 9737577
|
19,999 | 2016 |
9.5
|
D |
| 877 |
MELATI 6
IMO 9172260
|
31,969 | 2000 |
9.5
|
D |
| 878 |
YC DAISY
IMO 9304344
|
19,953 | 2005 |
9.5
|
D |
| 879 |
BOW JAGUAR
IMO 9989209
|
25,877 | 2024 |
9.5
|
D |
| 880 |
T VEGA
IMO 9323766
|
19,807 | 2006 |
9.5
|
D |
| 881 |
SEA NIMBUS
IMO 9724544
|
39,999 | 2016 |
9.6
|
D |
| 882 |
GOLDENGATE PARK
IMO 9493145
|
19,801 | 2013 |
9.6
|
D |
| 883 |
RAMANDA
IMO 9739812
|
17,994 | 2018 |
9.6
|
D |
| 884 |
OASIS
IMO 9512173
|
26,199 | 2011 |
9.6
|
D |
| 885 |
SILVER GERTRUDE
IMO 9683348
|
49,746 | 2014 |
9.6
|
D |
| 886 |
CHEM NEON
IMO 9815264
|
19,972 | 2018 |
9.6
|
D |
| 887 |
CHEM GALLIUM
IMO 9740782
|
19,973 | 2017 |
9.6
|
D |
| 888 |
SERENE MONACO
IMO 9309629
|
19,999 | 2005 |
9.6
|
D |
| 889 |
FAIRCHEM KATANA
IMO 9749685
|
19,980 | 2016 |
9.6
|
D |
| 890 |
NAVIG8 CONSTELLATION
IMO 9489118
|
45,281 | 2013 |
9.6
|
D |
| 891 |
SUNRISE RAY
IMO 9829679
|
19,976 | 2018 |
9.6
|
D |
| 892 |
MTM KOBE
IMO 9776456
|
21,183 | 2018 |
9.6
|
D |
| 893 |
FAIRCHEM FYNBOS
IMO 9914292
|
19,982 | 2021 |
9.6
|
D |
| 894 |
PRABHU NAND
IMO 9425980
|
19,997 | 2008 |
9.7
|
D |
| 895 |
SEYCHELLES PATRIOT
IMO 9365635
|
45,680 | 2008 |
9.7
|
D |
| 896 |
ACADIA PARK
IMO 9780548
|
19,996 | 2018 |
9.7
|
D |
| 897 |
CHEMICAL CHALLENGER
IMO 9743758
|
16,111 | 2015 |
9.7
|
D |
| 898 |
BLADE GALAXY
IMO 9692416
|
19,994 | 2014 |
9.7
|
D |
| 899 |
ASTELLA
IMO 9904041
|
13,822 | 2022 |
9.7
|
D |
| 900 |
RAMIRA
IMO 9890599
|
17,999 | 2021 |
9.7
|
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 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.
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.