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 |
|---|---|---|---|---|---|
| 552 |
STOLT COBALT
IMO 9739305
|
27,606 | 2016 |
7.8
|
C |
| 551 |
JIPRO NEFTIS
IMO 9459292
|
34,858 | 2011 |
7.8
|
C |
| 553 |
STOLT LERK
IMO 9719252
|
32,836 | 2017 |
7.8
|
C |
| 555 |
METEORA
IMO 9322944
|
40,046 | 2009 |
7.8
|
C |
| 554 |
BOCHEM CASABLANCA
IMO 9956410
|
26,644 | 2021 |
7.8
|
C |
| 556 |
STOLT PALM
IMO 9764506
|
32,761 | 2018 |
7.8
|
C |
| 557 |
ARDMORE DEFENDER
IMO 9707390
|
37,764 | 2015 |
7.8
|
C |
| 558 |
CHEM ABBEY
IMO 9937971
|
33,443 | 2024 |
7.8
|
C |
| 559 |
HORIZON APHRODITE
IMO 9407366
|
50,236 | 2006 |
7.8
|
C |
| 561 |
CHEMROAD HAYA
IMO 9303649
|
33,916 | 2004 |
7.8
|
C |
| 560 |
HAFNIA AMBER
IMO 9714056
|
38,506 | 2015 |
7.8
|
C |
| 562 |
TSURUGI GALAXY
IMO 9875501
|
26,143 | 2020 |
7.9
|
C |
| 563 |
LADY MARIELLA
IMO 9644433
|
39,316 | 2013 |
7.9
|
C |
| 564 |
CB PACIFIC
IMO 9851725
|
37,787 | 2020 |
7.9
|
C |
| 565 |
BASILIS L
IMO 9290505
|
37,371 | 2005 |
7.9
|
C |
| 567 |
NORDIC CALLAO
IMO 9796822
|
26,029 | 2019 |
7.9
|
C |
| 566 |
CHEMROAD ROSE
IMO 9317846
|
32,046 | 2005 |
7.9
|
C |
| 568 |
SEAFRIEND
IMO 9629574
|
50,660 | 2011 |
7.9
|
C |
| 569 |
FURANO GALAXY
IMO 9804928
|
25,357 | 2020 |
7.9
|
C |
| 570 |
TG CRAB
IMO 9400394
|
33,624 | 2009 |
7.9
|
C |
| 571 |
THUN VENERN
IMO 9739824
|
17,999 | 2018 |
7.9
|
C |
| 573 |
CABO NEGRO II
IMO 9317248
|
47,236 | 2006 |
7.9
|
C |
| 572 |
PS AUGUSTA
IMO 9506693
|
51,063 | 2011 |
7.9
|
C |
| 576 |
BALOS
IMO 9323560
|
40,165 | 2008 |
8.0
|
C |
| 575 |
HAFNIA BERING
IMO 9725603
|
39,067 | 2015 |
8.0
|
C |
| 574 |
DALE
IMO 9353084
|
37,280 | 2008 |
8.0
|
C |
| 577 |
AL REEM
IMO 9430296
|
46,046 | 2010 |
8.0
|
C |
| 578 |
JKT MIRACLE
IMO 9278662
|
33,573 | 2004 |
8.0
|
C |
| 580 |
STOLT ORCA
IMO 9597147
|
33,559 | 2013 |
8.0
|
C |
| 579 |
PRELUDE
IMO 9360439
|
39,988 | 2007 |
8.0
|
C |
| 581 |
LUCKY LADY
IMO 9288796
|
37,432 | 2005 |
8.0
|
C |
| 582 |
DARNIA
IMO 9336464
|
45,704 | 2017 |
8.0
|
C |
| 585 |
CB ADRIATIC
IMO 9851696
|
37,836 | 2019 |
8.0
|
C |
| 584 |
IDI
IMO 9307982
|
46,858 | 2007 |
8.0
|
C |
| 583 |
SEAPRIDE
IMO 9629562
|
50,660 | 2011 |
8.0
|
C |
| 586 |
AMAGI GALAXY
IMO 9490313
|
26,198 | 2010 |
8.1
|
C |
| 587 |
HAFNIA AMAZONITE
IMO 9719769
|
38,506 | 2015 |
8.1
|
C |
| 588 |
CHEMROAD SEA
IMO 9565730
|
33,560 | 2011 |
8.1
|
C |
| 589 |
MTM AMAZON
IMO 9374533
|
33,674 | 2008 |
8.1
|
C |
| 591 |
KIMOLOS
IMO 9405540
|
51,522 | 2010 |
8.1
|
C |
| 590 |
BRONX
IMO 9391414
|
37,602 | 2008 |
8.1
|
C |
| 593 |
STOLT ALM
IMO 9719238
|
32,834 | 2016 |
8.1
|
C |
| 592 |
SEASALVIA
IMO 9629550
|
50,660 | 2011 |
8.1
|
C |
| 594 |
FANTASIA
IMO 9378371
|
44,999 | 2009 |
8.1
|
C |
| 597 |
CHEMROAD WING
IMO 9309502
|
32,051 | 2005 |
8.1
|
C |
| 596 |
GC SAPPHIRE
IMO 9924924
|
19,993 | 2022 |
8.1
|
C |
| 595 |
TAKAO GALAXY
IMO 9920069
|
26,374 | 2022 |
8.1
|
C |
| 599 |
ATA VOYAGER
IMO 9408360
|
9,600 | 2009 |
8.1
|
C |
| 598 |
SOLAR SKYLER
IMO 9877640
|
25,039 | 2018 |
8.1
|
C |
| 600 |
GC BERYL
IMO 9924912
|
19,994 | 2021 |
8.1
|
C |
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.