Oil tanker — emissions rankings
Tanker economics shape tanker emissions: roughly half of a crude carrier's miles are sailed in ballast, empty, returning to load — fuel burnt with no cargo aboard. That structural handicap is why tanker intensity figures read higher than container equivalents, and why the efficient end of this ranking is dominated by modern eco-design VLCCs that combine post-EEDI hulls with disciplined slow steaming.
The verified MRV data covers tankers trading to Europe — a fleet reshaped since 2022 by the rerouting of crude flows, longer average voyages, and closer scrutiny of an ageing parallel fleet that largely avoids European ports altogether.
Verified data reported under the EU MRV regulation (source: EMSA / THETIS-MRV).
Most efficient: Oil tanker
Ranked by CO₂ emitted per tonne of cargo carried over one nautical mile — the metric that makes ships of different sizes comparable. Lower is better.
| # | Vessel | Company | Registry | Efficiency |
|---|---|---|---|---|
| 1 | Next | Cape Gemi Isletmeciligi A.s | BISSAU | top 1% |
| 2 | Tp Intrepid | Transpetrol Tm AS | OSLO | top 1% |
| 3 | Maersk Curacao | Synergy Denmark A/s | Roskilde | top 1% |
| 4 | Maersk Callao | Synergy Denmark A/s | Svendborg | top 1% |
| 5 | Maersk Cancun | Synergy Denmark A/s | Svendborg | top 1% |
| 6 | Maersk Capri | Synergy Denmark A/s | Svendborg | top 1% |
| 7 | Eagle Veracruz | Misc Shipmanagement (s) Pte Ltd | Singapore | top 1% |
| 8 | Scf Amur | — | Monrovia | top 1% |
| 9 | Maersk Teesport | Synergy Denmark A/s | Svendborg | top 1% |
| 10 | Nexus | Aqua Allure Holdings Ltd | St. John's | top 1% |
| 11 | Seaways Rio Grande | Dss 2 Llc | Majuro | top 1% |
| 12 | Seaways San Saba | Dss 1 Llc | Majuro | top 1% |
| 13 | New Renown | Associated Maritime Company (hong Kong) Limited | Hong Kong | top 1% |
| 14 | Grand Ambition | Pos SM Co Ltd | Panama | top 1% |
| 15 | Valle Di Siviglia | — | — | top 1% |
| 16 | Nectar | — | Monrovia | top 1% |
| 17 | London Voyager | Chevron Transport Corp Ltd | Majuro | top 1% |
| 18 | Front Prince | Front Prince I Inc | Majuro | top 1% |
| 19 | Dht Panther | — | HONG KONG | top 1% |
| 20 | Asian Progress VI | — | SINGAPORE | top 1% |
| 21 | Vl Bright | G-marine Service Co Ltd | MONROVIA | top 1% |
| 22 | Advantage Verdict | Genel Denizcilik Nakliyati A.s | MAJURO | top 1% |
| 23 | Canopus Voyager | Chevron Transport Corp Ltd | Nassau | top 1% |
| 24 | New Prosperity | Associated Maritime Company (hong Kong) Limited | Hong Kong | top 1% |
| 25 | Cssc Liao Ning | — | Hong Kong | top 1% |
Biggest CO₂ emitters
| # | Vessel | Company | CO₂ 2025 (t) |
|---|---|---|---|
| 1 | Alaska | Tsakos Shipping & Trading S.a. | 42,441 |
| 2 | Arctic | Tsakos Shipping & Trading S.a. | 41,507 |
| 3 | Advantage Start | Genel Denizcilik Nakliyati A.s | 40,728 |
| 4 | Maran Atalanta | Maran Tankers Management Inc. | 40,505 |
| 5 | Boris Sokolov | Dynacom Tankers Management Ltd | 39,046 |
| 6 | Spyros K | Tsakos Shipping & Trading S.a. | 38,282 |
| 7 | Maran Artemis | Maran Tankers Management Inc. | 37,953 |
| 8 | Decathlon | Delmer Marine Corp. | 37,724 |
| 9 | Maria A. Angelicoussis | Maran Tankers Management Inc. | 36,823 |
| 10 | Yuriy Kuchiev | Dynacom Tankers Management Ltd | 36,173 |