Oil tanker · Greece flag · built 2014
MARAN LEO: CO₂ emissions 2022–2025
IMO 9602473 EU ETS3 reporting years
- CO₂ reported 2025
- 12,145 t
- Fuel burned
- 3,891 t
- Distance
- 19,337 nm
- Time at sea
- 1,994 h
- Emitted at berth
- 2% of total
- Share of year under way
- 23%
- Gross tonnage
- 164,511
MARAN LEO against its type
Built in 2014, it is 4 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 164,511 gross tonnage it is larger than 98% of the other 2,841 oil tankers with a recorded tonnage. It is one of 215 oil tankers here under the Greece flag, 6.1% of the 3,548 on the register. The same builder is recorded for 194 other vessels here, 56 of them oil tankers. The returns for 2022–2025 all give PIRAEUS as port of registry.
Its 12,145 t of CO₂ for 2025 is 1.5 times the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 628.1 kg CO₂, 1.6 times the type median of 403.2 kg. It logged 1,994 hours at sea against a median of 2,030 hours for its type that year. 1.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 3 years with reported emissions, the highest was 2024 (13,868 t) and the lowest 2022 (5,566 t). Its efficiency percentile within the type went from 2 in 2022 to 4 in 2025 (lower is more efficient). Of the 2 sister ships listed below with a 2025 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2022–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 12,145 | 3,891 | 19,337 | 1,994 | 201 | 628.1 | 3.6 | 4 |
| 2024 | 13,868 | 4,430 | 17,162 | 1,565 | 861 | 808.1 | 3.8 | 6 |
| 2022 | 5,566 | 1,777 | 7,369 | 733 | 717 | 755.4 | 2.9 | 2 |
Vessel particulars
- IMO number
- 9602473
- Ship type
- Oil tanker
- Gross tonnage
- 164,511
- Length overall
- 333.0 m
- Beam
- 60.1 m
- Year built
- 2014
- Flag state
- Greece per EU MRV 2025
- Port of registry
- PIRAEUS MRV 2025
- Home port
- PIRAEUS
- Technical efficiency (design)
- EEXI (2.12 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-03-30
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 56 of 1,448 qualifying oil tankers by EEOI, at the 4th percentile. The dashed line is the type median, 7.5; this vessel reported 3.6.
EEOI divides emissions by transport work, which for this vessel and year was 3,392,377,095 tonne-miles over 19,337 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 118.2% higher than in 2022, for EU/EEA voyages only. No return is recorded for 2023, so the series has gaps.
From 2024 to 2025, emissions fell 12.4% while distance sailed rose 12.7%and CO₂ per nautical mile fell 22.3%.That points mainly to how efficiently it sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 12,336 t
- Methane (CH₄)
- 0.19 t
- Nitrous oxide (N₂O)
- 0.70 t
- Under EU ETS
- 6,173 t, 51% of total
Laden voyages2025
- CO₂ on laden voyages
- 7,806 t, 64% of total
- Fuel, laden
- 2,504 t
- CO₂ per nm, laden
- 636.0 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2022–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 3 MRV reporting years, an efficiency ranking and 5 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, a licensed photograph, a sanctions listing and US port state inspections.
Empty means unreported, never zero. How EEOI, distance, percentiles and sister ships are handled is explained under reading a vessel page. Something wrong? See corrections.