Oil tanker · Malta flag · built 2017
MARATHON TS: CO₂ emissions 2018–2025
IMO 9737371 MMSI 249987000EU ETS8 reporting years
- CO₂ reported 2025
- 10,511 t
- Fuel burned
- 3,332 t
- Distance
- 30,909 nm
- Time at sea
- 2,666 h
- Emitted at berth
- 7% of total
- Share of year under way
- 30%
- Gross tonnage
- 62,557
MARATHON TS against its type
Built in 2017, it is 7 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 62,557 gross tonnage it is larger than 59% of the other 2,841 oil tankers with a recorded tonnage. It is one of 289 oil tankers here under the Malta flag, 8.1% of the 3,548 on the register. The same builder is recorded for 86 other vessels here, 14 of them oil tankers. The returns for 2018–2025 all give Valletta as port of registry.
Its 10,511 t of CO₂ for 2025 is 33% above the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 340.1 kg CO₂, 16% below the type median of 403.2 kg. It logged 2,666 hours at sea against a median of 2,030 hours for its type that year. 6.7% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2019 (21,261 t) and the lowest 2023 (7,327 t). Its efficiency percentile within the type went from 30 in 2018 to 41 in 2025 (lower is more efficient). Of the 8 sister ships listed below with a 2025 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 10,511 | 3,332 | 30,909 | 2,666 | 701 | 340.1 | 6.8 | 41 |
| 2024 | 9,347 | 2,961 | 21,853 | 1,922 | 880 | 427.7 | 5.2 | 21 |
| 2023 | 7,327 | 2,325 | 22,340 | 2,013 | 220 | 328.0 | 5.9 | 26 |
| 2022 | 11,910 | 3,780 | 32,850 | 3,069 | 1,309 | 362.6 | 8.3 | 54 |
| 2021 | 15,620 | 4,929 | 39,215 | 3,530 | 3,091 | 398.3 | 5.3 | 17 |
| 2020 | 10,978 | 3,471 | 31,234 | 2,699 | 1,190 | 351.5 | 6.0 | 20 |
| 2019 | 21,261 | 6,724 | 50,635 | 4,846 | 3,541 | 419.9 | 8.1 | 46 |
| 2018 | 20,393 | 6,493 | 48,809 | 4,358 | 2,930 | 417.8 | 6.5 | 30 |
Vessel particulars
- IMO number
- 9737371
- MMSI
- 249987000
- Call sign
- 9HA4464
- Ship type
- Oil tanker
- Gross tonnage
- 62,557
- Length overall
- 250.0 m
- Beam
- 44.0 m
- Year built
- 2017
- Flag state
- Malta per EU MRV 2025
- Builder
- Mangalia Shipyard
- Port of registry
- Valletta MRV 2025
- Technical efficiency (design)
- EEDI (3.1 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-03-02
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 596 of 1,448 qualifying oil tankers by EEOI, at the 41st percentile. The dashed line is the type median, 7.5; this vessel reported 6.8.
EEOI divides emissions by transport work, which for this vessel and year was 1,548,011,782 tonne-miles over 30,909 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 48.5% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 12.5% while distance sailed rose 41.4%and CO₂ per nautical mile fell 20.5%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 10,675 t
- Methane (CH₄)
- 0.17 t
- Nitrous oxide (N₂O)
- 0.60 t
- Under EU ETS
- 5,682 t, 54% of total
Laden voyages2025
- CO₂ on laden voyages
- 6,560 t, 62% of total
- Fuel, laden
- 2,077 t
- CO₂ per nm, laden
- 381.4 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Observed movementsAIS · Norwegian waters
- First seen
- 22 Apr 2026
- Last seen
- 21 Jun 2026
- Days observed
- 25
- Positions
- 1,587
- Median speed
- 11.4 kn
Its recorded positions span 58.0°N to 60.9°N and 4.4°E to 6.2°E.
292 hourly points from 1,587 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.
Positions recorded per month
Norwegian Coastal Administration open AIS, Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap means the vessel was not recorded here, not that it was idle or that a transponder was off.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2019 | HELLENIC LLOYD'S S.A. | Greece |
A change of verifier is not in itself a sign of anything being wrong.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 8 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars and AIS movements in Norwegian waters. Not found in the sources for this vessel: 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.