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
415 at D/E1,698 rated vessels · 216 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 | 1,237 | 1–3% | €80k–250k | — | vendor claim |
| Rotor sails (per unit) | 1,080 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 1,080 | 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 |
|---|---|---|---|---|---|
| 1051 |
NORTHERN SPIRIT
IMO 9580962
|
19,118 | 2011 |
12.8
|
D |
| 1052 |
THERESA GALAXY
IMO 9317195
|
19,988 | 2005 |
12.8
|
D |
| 1053 |
FT QUARTO
IMO 9447330
|
18,000 | 2012 |
12.8
|
D |
| 1054 |
SCOT BAYERN
IMO 9255828
|
8,234 | 2003 |
12.8
|
D |
| 1055 |
CHEMICAL LUNA
IMO 9521423
|
14,304 | 2008 |
12.9
|
D |
| 1056 |
HARBOUR EXPRESS
IMO 9418822
|
20,522 | 2011 |
12.9
|
D |
| 1057 |
CHEM TAURUS
IMO 9477505
|
19,961 | 2010 |
12.9
|
D |
| 1058 |
NQ MAGNOLIA
IMO 9384162
|
17,101 | 2007 |
12.9
|
D |
| 1059 |
ELM GALAXY
IMO 9331256
|
20,854 | 2006 |
12.9
|
D |
| 1060 |
ATLANTIC SPIRIT
IMO 9580974
|
19,131 | 2011 |
12.9
|
D |
| 1061 |
ASP LILY
IMO 9542178
|
19,991 | 2011 |
13.0
|
D |
| 1062 |
NQ MILLA
IMO 9261516
|
16,882 | 2003 |
13.1
|
D |
| 1063 |
MAZU XIAO
IMO 9503940
|
7,739 | 2008 |
13.1
|
D |
| 1064 |
LOEVSTAKKEN
IMO 9724441
|
19,995 | 2015 |
13.1
|
D |
| 1065 |
ARKOS
IMO 9286827
|
13,700 | 2004 |
13.1
|
D |
| 1066 |
PVT ESTELLA
IMO 9414321
|
13,102 | 2006 |
13.3
|
D |
| 1067 |
ATLANTIC MATE
IMO 9350745
|
18,000 | 2007 |
13.3
|
D |
| 1068 |
MISSISSIPPI STAR
IMO 9527623
|
13,054 | 2010 |
13.3
|
D |
| 1069 |
AWH ALMA
IMO 9486166
|
17,055 | 2009 |
13.3
|
D |
| 1070 |
GULHOLMEN
IMO 9435703
|
16,817 | 2007 |
13.3
|
D |
| 1071 |
LINKEN
IMO 9733351
|
19,997 | 2016 |
13.3
|
D |
| 1072 |
CHEMICAL FRONTIER
IMO 9940734
|
14,521 | 2022 |
13.4
|
D |
| 1073 |
HARBOUR FASHION
IMO 9473080
|
16,878 | 2011 |
13.4
|
D |
| 1074 |
CHEM HYDRA
IMO 9486180
|
17,055 | 2009 |
13.4
|
D |
| 1075 |
THE AMIGO
IMO 9492309
|
14,911 | 2012 |
13.4
|
D |
| 1076 |
TRANS FJORD
IMO 9956939
|
12,577 | 2023 |
13.4
|
D |
| 1077 |
AQUARIUS
IMO 9393008
|
19,928 | 2008 |
13.4
|
D |
| 1078 |
FMT GUMULDUR
IMO 9427976
|
14,368 | 2009 |
13.5
|
D |
| 1079 |
VESTHOLMEN
IMO 9421295
|
17,525 | 2009 |
13.5
|
D |
| 1080 |
HARBOUR PIONEER
IMO 9572757
|
19,122 | 2010 |
13.6
|
D |
| 1081 |
ERIKA SCHULTE
IMO 9439864
|
16,427 | 2006 |
13.6
|
E |
| 1082 |
CHEMICAL MASTER
IMO 9558957
|
14,298 | 2009 |
13.6
|
E |
| 1083 |
FRANK
IMO 9371787
|
17,998 | 2008 |
13.6
|
E |
| 1084 |
CHEM NORMA
IMO 9486192
|
17,095 | 2009 |
13.6
|
E |
| 1085 |
HARBOUR PROGRESS
IMO 9572745
|
19,175 | 2010 |
13.6
|
E |
| 1086 |
SLOMAN HERMES
IMO 9466738
|
16,418 | 2012 |
13.7
|
E |
| 1087 |
EVA BERGEN
IMO 9800013
|
19,888 | 2018 |
13.7
|
E |
| 1088 |
MTM SOUTHPORT
IMO 9416032
|
19,998 | 2008 |
13.7
|
E |
| 1089 |
XT PROGRESS
IMO 9500144
|
17,427 | 2020 |
13.7
|
E |
| 1090 |
YM SATURN
IMO 9362138
|
15,988 | 2007 |
13.7
|
E |
| 1091 |
EL ZORRO
IMO 9344801
|
13,085 | 2006 |
13.7
|
E |
| 1092 |
STOLT TEAL
IMO 9199323
|
8,587 | 1999 |
13.7
|
E |
| 1093 |
ORIENTAL IXIA
IMO 9924728
|
16,298 | 2023 |
13.8
|
E |
| 1094 |
CUMBRIAN
IMO 9298404
|
12,921 | 2004 |
13.8
|
E |
| 1095 |
LUNNI
IMO 9797802
|
17,500 | 2018 |
13.8
|
E |
| 1096 |
HEINRICH
IMO 9350757
|
17,998 | 2008 |
13.8
|
E |
| 1097 |
GINGA SAKER
IMO 9258155
|
20,491 | 2003 |
13.8
|
E |
| 1098 |
CHEMICAL EXPLORER
IMO 9820427
|
12,643 | 2018 |
13.9
|
E |
| 1099 |
SILENDI
IMO 9508720
|
19,964 | 2009 |
13.9
|
E |
| 1100 |
THEMSESTERN
IMO 9183843
|
21,870 | 2000 |
13.9
|
E |
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.