Chemical tanker · Luxembourg flag · built 2017
MAYOURY: CO₂ emissions 2019–2025
IMO 9777541 EU ETS7 reporting years
- CO₂ reported 2025
- 7,555 t
- Fuel burned
- 2,373 t
- Distance
- 37,354 nm
- Time at sea
- 4,156 h
- Emitted at berth
- 2% of total
- Share of year under way
- 47%
- Gross tonnage
- 6,141
MAYOURY against its type
Built in 2017, it is 7 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 6,141 gross tonnage it is smaller than 93% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 3 chemical tankers here under the Luxembourg flag, 0.1% of the 2,344 on the register. The reported port of registry changed: MARSEILLE (2019–2023), then Valletta (2024), then Luxembourg (2025).
Its 7,555 t of CO₂ for 2025 is 37% above the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 202.3 kg CO₂, 19% below the type median of 250.2 kg. It logged 4,156 hours at sea against a median of 2,106 hours for its type that year. 1.8% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 7 years with reported emissions, the highest was 2021 (8,194 t) and the lowest 2023 (6,525 t). Its efficiency percentile within the type went from 99 in 2021 to 97 in 2025 (lower is more efficient). Of the 5 comparable vessels listed below with a 2025 return, 4 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 7,555 | 2,373 | 37,354 | 4,156 | 137 | 202.3 | 48.9 | 97 |
| 2024 | 7,854 | 2,515 | 40,393 | 4,387 | 173 | 194.4 | 56.0 | 98 |
| 2023 | 6,525 | 2,086 | — | 4,158 | 155 | 191.0 | 50.9 | not ranked |
| 2022 | 7,218 | 2,310 | 37,704 | 4,635 | 224 | 191.4 | 45.8 | 100 |
| 2021 | 8,194 | 2,620 | 40,606 | 4,653 | 198 | 201.8 | 49.0 | 99 |
| 2020 | 7,533 | 2,408 | — | 5,053 | 166 | 199.7 | 57.0 | not ranked |
| 2019 | 7,956 | 2,541 | — | 6,047 | 302 | 201.6 | 47.6 | not ranked |
Vessel particulars
- IMO number
- 9777541
- Ship type
- Chemical tanker
- Gross tonnage
- 6,141
- Length overall
- 119.5 m
- Beam
- 21.6 m
- Year built
- 2017
- Flag state
- Luxembourg per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list France. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- Luxembourg MRV 2025
- Technical efficiency (design)
- EEXI (13.3 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
- 2026-04-09
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,306 of 1,348 qualifying chemical tankers by EEOI, at the 97th percentile. The dashed line is the type median, 14.4; this vessel reported 48.9.
EEOI divides emissions by transport work, which for this vessel and year was 154,377,197 tonne-miles over 37,354 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 5.0% lower than in 2019, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 3.8% while distance sailed fell 7.5%and CO₂ per nautical mile rose 4.0%.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
- 7,672 t
- Methane (CH₄)
- 0.12 t
- Nitrous oxide (N₂O)
- 0.43 t
- Under EU ETS
- 215 t, 3% of total
Laden voyages2025
- CO₂ on laden voyages
- 4,484 t, 59% of total
- Fuel, laden
- 1,412 t
- CO₂ per nm, laden
- 195.8 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2019 | Bureau Veritas Certification France | France |
| 2020 | NORMEC VERIFAVIA SAS | France |
| 2024 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | 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 2019–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 7 MRV reporting years, an efficiency ranking and 4 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.