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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)
#434 of 1,422 chemical tankers
CO₂ intensity
6.4 g CO₂/dwt·nm
vs segment average (9.4)
-32% 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
401 STOLT MAGNESIUM
IMO 9739317
 27,605 2017
6.3
B
400 THERESA EMPAT
IMO 9931173
 49,449 2023
6.3
B
404 VELOS AQUARIUS
IMO 9381756
 49,999 2008
6.3
B
403 NORD SUPERIOR
IMO 9692129
 49,573 2015
6.3
B
405 MINERVA JULIE
IMO 9380831
 49,990 2008
6.3
B
406 MRC SEDEF
IMO 9335032
 45,951 2007
6.3
B
407 EVGENIA S
IMO 9388015
 46,846 2008
6.3
B
408 OCIOS IOANNIS
IMO 9686986
 49,997 2013
6.3
B
410 LILA KINGSTON
IMO 9380362
 49,999 2006
6.3
B
409 BOW SUN
IMO 9197284
 49,466 2003
6.3
B
412 BOW SPRING
IMO 9215256
 49,429 2004
6.3
B
411 SOLAR SUZANNE
IMO 9877638
 25,039 2018
6.3
B
413 TORM AMORINA
IMO 9484895
 46,184 2012
6.3
B
414 GRAND ACE6
IMO 9375329
 46,192 2007
6.3
B
415 NAVIG8 GOAL
IMO 9853216
 49,770 2019
6.3
B
418 PROTEUS
IMO 9864368
 49,999 2018
6.3
B
417 DUMBLEDORE
IMO 9325611
 44,998 2007
6.3
B
416 SEA GULL
IMO 9325855
 33,849 2006
6.3
B
420 CHEMROAD POLARIS
IMO 9536923
 35,923 2014
6.4
B
419 BOW OLYMPUS
IMO 9818527
 49,120 2019
6.4
B
421 PACIFIC TAURUS
IMO 1034008
 49,999 2025
6.4
B
422 SALACGRIVA
IMO 9323390
 52,620 2008
6.4
B
423 BOW STAR
IMO 9197296
 49,487 2004
6.4
B
427 BOW SEA
IMO 9215282
 49,511 2006
6.4
B
426 HAFNIA AMETHYST
IMO 9714501
 38,506 2015
6.4
B
425 MAGNATE
IMO 9461673
 49,999 2011
6.4
B
424 FAIR BREEZE
IMO 9419723
 49,900 2009
6.4
B
429 GREAT LAMDA
IMO 9873668
 49,282 2020
6.4
B
428 INITIATOR
IMO 9995466
 50,475 2025
6.4
B
431 CHEMROAD JUPITER
IMO 9932713
 35,722 2022
6.4
B
430 THERESA LIMA
IMO 9946130
 49,449 2023
6.4
B
432 HAFNIA ADAMITE
IMO 9727546
 38,506 2013
6.4
B
433 CHEMROAD ORCHID
IMO 9790608
 35,703 2019
6.4
B
435 ATHINA M
IMO 9644237
 51,853 2011
6.4
B
434 BOW SKY
IMO 9215268
 49,479 2005
6.4
B
436 LEONORA VICTORY
IMO 9283784
 46,889 2005
6.4
B
437 WENCHE VICTORY
IMO 9288825
 47,210 2005
6.4
B
438 CHAMPION PULA
IMO 9341146
 46,927 2006
6.4
B
440 GREAT THITA
IMO 9873670
 49,276 2020
6.5
B
439 HAFNIA AZURITE
IMO 9727560
 38,506 2013
6.5
B
441 CAPRI
IMO 9528392
 50,895 2011
6.5
B
442 BOW SIRIUS
IMO 9215294
 49,539 2006
6.5
B
443 SANTIAGO I
IMO 9730347
 49,901 2022
6.5
B
445 PALMA
IMO 9384033
 51,225 2008
6.5
B
444 PYXIS THETA
IMO 9657064
 51,462 2013
6.5
B
447 BOW PRECISION
IMO 9790646
 35,155 2018
6.5
B
446 HARBIYE
IMO 9396787
 50,554 2008
6.5
B
449 ARDMORE EXPLORER
IMO 9654581
 49,393 2014
6.5
B
448 FANTASIA
IMO 9378371
 44,999 2009
6.5
B
450 CRISTALLINA
IMO 1022718
 49,999 2025
6.5
B
Page 9 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.