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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.

Segment rank (2025)
#375 of 1,422 chemical tankers
CO₂ intensity
6.1 g CO₂/dwt·nm
vs segment average (9.4)
-35% greener
B
Bulk Carrier Container Ship Oil Tanker Chemical Tanker Gas Carrier LNG Carrier General Cargo Vehicle Carrier Refrigerated Cargo Ro-Ro Cargo

CII band distribution

415 at D/E
A 388B 447C 448D 293E 122

1,698 rated vessels · 169 of the D/E set dock within 12 months

Docking pipeline — D/E vessels per quarter

21
Q4
46
'27 Q1
34
'27 Q2
29
'27 Q3
36
'27 Q4
31
'28 Q1
30
'28 Q2
23
'28 Q3

Windows estimated from the class-expiry docking model, not bookings.

Top eligible retrofit measures for this segment

MeasureEligible CO₂ reductionCapex band PaybackConfidence
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

278
D/E vessels with at least one eligible measure
€647–1,598M
capex range, top measure per vessel (278 of 278 with computable scaling)
0.09–0.19 Mt
annual CO₂ reduction available (vendor-claimed ranges × reported emissions)

Retrofit prospects — worst band first

VesselBand 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
See all 1,698 rated chemical tankers with exposure and dock windows. Sign in →
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
1,451
vessels ranked
3.48
greenest (g CO₂/dwt·nm)
8.28
segment median
# Vessel Size (DWT) Built Carbon intensity — AER (g CO₂/dwt·nm) Grade
352 CARTAGENA
IMO 9389318
 46,923 2009
6.0
B
349 NORD VALOROUS
IMO 9827059
 50,550 2017
6.0
B
353 MOSTAR
IMO 9313474
 51,218 2007
6.0
B
354 ARDMORE EXPORTER
IMO 9654775
 49,218 2014
6.0
B
355 YASA ORION
IMO 9888340
 50,215 2021
6.0
B
358 STENA IMAGINATION
IMO 9685463
 49,689 2016
6.0
B
357 PACIFIC PROSPERITY
IMO 9326926
 46,017 2008
6.0
B
356 NAVIGATOR
IMO 9370719
 37,946 2008
6.0
B
359 GULF MUTTRAH
IMO 9381835
 46,556 2009
6.0
B
360 PYXIS KARTERIA
IMO 9596260
 46,652 2013
6.1
B
361 THERESA TIGA
IMO 9919735
 49,449 2023
6.1
B
362 HARMONICS
IMO 9799680
 37,258 2019
6.1
B
364 STOLT EBONY
IMO 9744908
 32,786 2017
6.1
B
363 HAFNIA AMBER
IMO 9714056
 38,506 2015
6.1
B
367 SEA LA DONNA
IMO 9380532
 47,128 2009
6.1
B
366 CHEMROAD SAKURA
IMO 9757967
 35,688 2017
6.1
B
365 HIGH CHALLENGE
IMO 9740586
 49,990 2017
6.1
B
370 HAFNIA AVENTURINE
IMO 9711547
 38,506 2015
6.1
B
369 MRC BELIZ
IMO 9335044
 46,012 2007
6.1
B
368 HIGH WIND
IMO 9740574
 49,990 2016
6.1
B
371 NAVIG8 GUARD
IMO 9833670
 49,761 2019
6.1
B
372 NAVIG8 EXCEED
IMO 9973913
 49,166 2024
6.1
B
373 DORIC PIONEER
IMO 9637117
 51,565 2013
6.1
B
374 RUI FU SHENG
IMO 9379129
 46,846 2007
6.1
B
376 CL CHARLOTTE BRONTE
IMO 9943310
 49,347 2023
6.1
B
375 ARDMORE ENTERPRISE
IMO 9654555
 49,140 2013
6.1
B
377 WECO AMELIE
IMO 9693812
 49,708 2015
6.2
B
380 ACACIA
IMO 9747352
 49,999 2017
6.2
B
379 CAPE TEES
IMO 9441180
 73,731 2009
6.2
B
378 EUROCHAMPION
IMO 9895903
 49,999 2021
6.2
B
381 THALE VICTORY
IMO 9365817
 51,087 2006
6.2
B
382 CHEMROAD HAWK
IMO 9790622
 35,647 2019
6.2
B
383 CHAMPION JULIE
IMO 9447756
 51,561 2010
6.2
B
384 SEAWAYS LILY
IMO 9354894
 49,999 2008
6.2
B
387 TARANGER
IMO 9524762
 45,372 2011
6.2
B
386 SEAWAYS STAR
IMO 9337523
 49,999 2008
6.2
B
385 ATLANTIC EAGLE
IMO 9332183
 47,128 2007
6.2
B
388 NORD VALOUR
IMO 9985851
 49,999 2025
6.2
B
389 HAFNIA AMESSI
IMO 9719745
 38,506 2015
6.2
B
391 HAFNIA AMMOLITE
IMO 9727534
 38,506 2013
6.2
B
390 TORM SINGAPORE
IMO 9434230
 49,999 2011
6.2
B
394 ANTARES
IMO 9723019
 37,867 2015
6.2
B
393 ELKA DELPHI
IMO 9705902
 49,990 2013
6.2
B
392 NCC REEM
IMO 9459034
 45,498 2012
6.2
B
396 GREAT EPSILON
IMO 9873644
 49,298 2020
6.2
B
397 DEE4 LARCH
IMO 9697909
 49,737 2013
6.2
B
395 SEAFRIEND
IMO 9629574
 50,660 2011
6.2
B
398 STENA PROGRESSIVE
IMO 9944649
 49,990 2024
6.2
B
399 HAPPY LADY
IMO 9644225
 51,853 2011
6.2
B
400 FPMC 31
IMO 9831696
 49,731 2019
6.3
B
Page 8 of 29 — 1,422 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.