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
552 at D/E2,075 rated vessels · 266 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 | 1,872 | 5–10% | €400k–1,200k | — | vendor claim |
| Bulbous bow reprofiling | 1,753 | 2–6% | €300k–900k | — | vendor claim |
| Methanol dual-fuel conversion | 1,191 | 5–15% | €8,000k–20,000k | — | vendor claim |
| LNG dual-fuel conversion | 1,157 | 15–25% | €15,000k–35,000k | — | vendor claim |
| Turbocharger cut-out | 858 | 1–3% | €80k–250k | — | vendor claim |
| Shaft generator / PTO | 776 | 3–6% | €500–1,500/kW | — | 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 |
|---|---|---|---|---|---|
| 604 |
STI LAVENDER
IMO 9838254
|
109,999 | 2019 |
3.4
|
B |
| 603 |
DELTA ATLANTICA
IMO 9419101
|
161,762 | 2011 |
3.4
|
B |
| 602 |
EAGLE LE HAVRE
IMO 9795103
|
113,808 | 2017 |
3.4
|
B |
| 601 |
ON PEACE
IMO 9893204
|
114,623 | 2021 |
3.4
|
B |
| 607 |
MARLIN LA PLATA
IMO 9823560
|
114,752 | 2022 |
3.4
|
B |
| 609 |
MINERVA KARTERIA
IMO 9787170
|
114,780 | 2018 |
3.4
|
B |
| 606 |
MINERVA MARINA
IMO 9411939
|
157,954 | 2009 |
3.4
|
B |
| 605 |
ANTARCTIC
IMO 9315185
|
163,216 | 2007 |
3.4
|
B |
| 608 |
VAIL SPIRIT
IMO 9399478
|
157,048 | 2006 |
3.4
|
B |
| 611 |
VELOS EMERALD
IMO 9402213
|
115,042 | 2008 |
3.4
|
B |
| 610 |
NISSOS TINOS
IMO 9886782
|
157,447 | 2021 |
3.4
|
B |
| 613 |
SEACALM
IMO 9773753
|
112,119 | 2017 |
3.4
|
B |
| 615 |
NORDIC LIGHT
IMO 9436446
|
158,475 | 2010 |
3.4
|
B |
| 612 |
CASTRO ALVES
IMO 9547673
|
115,727 | 2018 |
3.4
|
B |
| 616 |
CAPTAIN PARIS
IMO 9692844
|
113,876 | 2014 |
3.4
|
B |
| 614 |
LEVANTINE SEA
IMO 9815616
|
114,218 | 2018 |
3.4
|
B |
| 618 |
FRONT CHEETAH
IMO 9686637
|
109,900 | 2016 |
3.4
|
B |
| 617 |
LUZON SPIRIT
IMO 9572276
|
109,581 | 2011 |
3.4
|
B |
| 620 |
TIANLONG SPIRIT
IMO 9378369
|
159,021 | 2009 |
3.4
|
B |
| 619 |
TILOS I
IMO 9800271
|
149,999 | 2018 |
3.4
|
B |
| 623 |
DIMITRIS P
IMO 9565950
|
157,740 | 2011 |
3.4
|
B |
| 625 |
MINERVA SYMPHONY
IMO 9304605
|
159,450 | 2006 |
3.4
|
B |
| 622 |
MARAN PENELOPE
IMO 9402914
|
158,266 | 2009 |
3.4
|
B |
| 627 |
PACIFIC DIAMOND
IMO 9893046
|
113,306 | 2021 |
3.4
|
B |
| 626 |
MINERVA ZOE
IMO 9800568
|
109,900 | 2019 |
3.4
|
B |
| 621 |
GH HOLIDAY
IMO 9761528
|
157,543 | 2014 |
3.4
|
B |
| 624 |
SEAWAYS SHENANDOAH
IMO 9607966
|
112,691 | 2014 |
3.4
|
B |
| 629 |
SAMSARA
IMO 9792228
|
159,855 | 2017 |
3.5
|
B |
| 628 |
SEAMAJESTY
IMO 9601223
|
158,322 | 2012 |
3.5
|
B |
| 630 |
GHAT
IMO 9930105
|
115,519 | 2022 |
3.5
|
B |
| 631 |
YASA GOLDEN MARMARA
IMO 9337341
|
110,769 | 2008 |
3.5
|
B |
| 635 |
ADVANTAGE ANGEL
IMO 9779953
|
113,563 | 2017 |
3.5
|
B |
| 634 |
EURO
IMO 9567702
|
157,539 | 2012 |
3.5
|
B |
| 633 |
ATLANTIC JADE
IMO 9892987
|
109,325 | 2019 |
3.5
|
B |
| 632 |
EAGLE HANOVER
IMO 9398723
|
114,014 | 2010 |
3.5
|
B |
| 636 |
POLAR BRIGHT
IMO 9732395
|
109,999 | 2018 |
3.5
|
B |
| 642 |
ARCTIC
IMO 9315173
|
163,216 | 2007 |
3.5
|
B |
| 641 |
TORM GITTE
IMO 9426312
|
119,456 | 2010 |
3.5
|
B |
| 640 |
ORCA PEARL
IMO 9402249
|
114,821 | 2009 |
3.5
|
B |
| 637 |
PROTEUS REBECCA
IMO 9914682
|
109,996 | 2022 |
3.5
|
B |
| 639 |
VST LYRA
IMO 9740471
|
109,980 | 2018 |
3.5
|
B |
| 638 |
ABLIANI
IMO 9693068
|
109,999 | 2013 |
3.5
|
B |
| 650 |
MARLIN LE HAVRE
IMO 9829904
|
111,000 | 2018 |
3.5
|
B |
| 649 |
NICOLAOS
IMO 9429297
|
164,758 | 2010 |
3.5
|
B |
| 648 |
IONIC ALTHEA
IMO 9728435
|
114,737 | 2016 |
3.5
|
B |
| 647 |
EBN HAWKEL
IMO 9874507
|
112,003 | 2021 |
3.5
|
B |
| 646 |
PENTATHLON
IMO 9438406
|
158,475 | 2009 |
3.5
|
B |
| 645 |
EUROLEADER
IMO 9290385
|
159,062 | 2005 |
3.5
|
B |
| 644 |
KRITI HERO
IMO 9887308
|
158,005 | 2021 |
3.5
|
B |
| 643 |
STI SYMPHONY
IMO 9719692
|
109,999 | 2016 |
3.5
|
B |
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.