Oil 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
551 at D/E2,075 rated vessels · 279 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 | 1,874 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 1,757 | 2–6% | €300k–900k | — | vendor claim |
| Turbocharger cut-out | 1,371 | 1–3% | €80k–250k | — | vendor claim |
| Methanol dual-fuel conversion | 1,195 | 5–15% | €8,000k–20,000k | — | vendor claim |
| Rotor sails (per unit) | 1,185 | route-dependent | €1,500k–3,500k | — | vendor claim |
| Suction wing sails (per unit) | 1,185 | route-dependent | €1,000k–2,500k | — | 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 |
|---|---|---|---|
| PAULA GLORY · 25-60k | E | 3y | 2026 |
| OLYMPIC TROPHY · >200k | E | 16y | 2026 |
| SEALING · 25-60k | E | 23y | 2026 |
| EOS T · <25k | E | 20y | 2026 |
| HERCULES SUN · <25k | E | 4y | 2026 |
| # | Vessel | Size (DWT) | Built | Carbon intensity — AER (g CO₂/dwt·nm) | Grade |
|---|---|---|---|---|---|
| 901 |
ADVANTAGE LIFE
IMO 9708564
|
109,999 | 2015 |
4.1
|
C |
| 902 |
IONIC ASPIS
IMO 9523287
|
107,508 | 2011 |
4.1
|
C |
| 903 |
BONITA
IMO 9297541
|
108,386 | 2006 |
4.1
|
C |
| 904 |
PALLADIUM
IMO 9773923
|
113,221 | 2017 |
4.1
|
C |
| 905 |
ANDRE REBOUCAS
IMO 9453846
|
157,055 | 2015 |
4.1
|
C |
| 906 |
CATALAN SEA
IMO 9577044
|
116,620 | 2012 |
4.1
|
C |
| 907 |
HUA LIN WAN
IMO 9614086
|
109,475 | 2012 |
4.1
|
C |
| 908 |
YINGHAO CONFIDENCE
IMO 9389978
|
107,600 | 2010 |
4.1
|
C |
| 909 |
JAG AANCHAL
IMO 9390161
|
74,811 | 2008 |
4.1
|
C |
| 910 |
AMAZON VICTORY
IMO 9660358
|
72,412 | 2014 |
4.1
|
C |
| 911 |
JAARLI
IMO 9892432
|
112,459 | 2021 |
4.1
|
C |
| 912 |
SCORPIO
IMO 9389071
|
107,157 | 2009 |
4.1
|
C |
| 913 |
GREEN ATTITUDE
IMO 9808156
|
112,532 | 2018 |
4.1
|
C |
| 914 |
AMAZON
IMO 9476654
|
149,999 | 2011 |
4.1
|
C |
| 915 |
SFL PANTHER
IMO 9664782
|
115,238 | 2015 |
4.1
|
C |
| 916 |
LUCKY TRADER
IMO 9952608
|
49,813 | 2022 |
4.1
|
C |
| 917 |
IASONAS
IMO 9419357
|
115,500 | 2009 |
4.1
|
C |
| 918 |
HAFNIA SHINANO
IMO 9506069
|
76,594 | 2008 |
4.1
|
C |
| 919 |
DONEGAL SPIRIT
IMO 9312846
|
105,611 | 2006 |
4.1
|
C |
| 920 |
DELTA STAR
IMO 9458016
|
115,618 | 2013 |
4.1
|
C |
| 921 |
CIELO BIANCO
IMO 9778296
|
74,999 | 2017 |
4.1
|
C |
| 922 |
STI OXFORD
IMO 9697595
|
109,999 | 2015 |
4.1
|
C |
| 923 |
CSK VANGUARD
IMO 9728423
|
114,667 | 2016 |
4.1
|
C |
| 924 |
ADVANTAGE PADOVA
IMO 9794848
|
75,342 | 2019 |
4.2
|
C |
| 925 |
SAGA
IMO 9528031
|
115,738 | 2011 |
4.2
|
C |
| 926 |
STI PARK
IMO 9690793
|
109,999 | 2013 |
4.2
|
C |
| 927 |
STI GOAL
IMO 9717125
|
109,999 | 2016 |
4.2
|
C |
| 928 |
GULF CORAL
IMO 9389851
|
74,999 | 2009 |
4.2
|
C |
| 929 |
CIELO ROSSO
IMO 9778301
|
74,999 | 2015 |
4.2
|
C |
| 930 |
STI KINGSWAY
IMO 9712852
|
109,999 | 2015 |
4.2
|
C |
| 931 |
CAPTAIN A. STELLATOS
IMO 9439670
|
105,848 | 2010 |
4.2
|
C |
| 932 |
A LEOPARD
IMO 9838589
|
114,066 | 2021 |
4.2
|
C |
| 933 |
SYROS WARRIOR
IMO 9370850
|
107,687 | 2005 |
4.2
|
C |
| 934 |
TYRRHENIAN SEA
IMO 9829100
|
114,218 | 2019 |
4.2
|
C |
| 935 |
HAFNIA YANGTZE
IMO 9393096
|
76,578 | 2009 |
4.2
|
C |
| 936 |
BNEIDER
IMO 9595010
|
110,587 | 2012 |
4.2
|
C |
| 937 |
ALTAI
IMO 9446427
|
115,952 | 2011 |
4.2
|
C |
| 938 |
MINERVA ELLIE
IMO 9297321
|
103,195 | 2005 |
4.2
|
C |
| 939 |
APSOGOS
IMO 9282053
|
115,444 | 2004 |
4.2
|
C |
| 940 |
LEYTE SPIRIT
IMO 9484089
|
109,670 | 2011 |
4.2
|
C |
| 941 |
DUGI OTOK
IMO 9334727
|
108,414 | 2008 |
4.2
|
C |
| 942 |
ALYARMOUK
IMO 9356438
|
116,038 | 2008 |
4.2
|
C |
| 943 |
ARCTICA
IMO 9305556
|
117,099 | 2005 |
4.2
|
C |
| 944 |
HAFNIA PRECISION
IMO 9760213
|
74,997 | 2016 |
4.2
|
C |
| 945 |
P. MONTEREY
IMO 9568172
|
105,525 | 2011 |
4.2
|
C |
| 946 |
LIWA-V
IMO 9489039
|
105,221 | 2011 |
4.2
|
C |
| 947 |
BLUE PRINCE
IMO 9429182
|
109,010 | 2009 |
4.2
|
C |
| 948 |
NEW VISION
IMO 9804459
|
157,617 | 2018 |
4.2
|
C |
| 949 |
SEA JEWEL
IMO 9607722
|
112,081 | 2013 |
4.2
|
C |
| 950 |
ALPES
IMO 9817470
|
112,504 | 2018 |
4.2
|
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.