Chemical tanker · Malta flag · built 2013
ZEFYROS: CO₂ emissions 2018–2025
IMO 9515917 EU ETS7 reporting years
- CO₂ reported 2025
- 15,004 t
- Fuel burned
- 4,775 t
- Distance
- 45,714 nm
- Time at sea
- 3,788 h
- Emitted at berth
- 7% of total
- Share of year under way
- 43%
- Gross tonnage
- 29,924
ZEFYROS against its type
Built in 2013, it is 3 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 29,924 gross tonnage it is larger than 86% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 218 chemical tankers here under the Malta flag, 9.3% of the 2,344 on the register. The reported port of registry changed: Panama (2018–2023), then Valletta (2024–2025).
Its 15,004 t of CO₂ for 2025 is 2.7 times the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 328.2 kg CO₂, 31% above the type median of 250.2 kg. It logged 3,788 hours at sea against a median of 2,106 hours for its type that year. 6.8% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 7 years with reported emissions, the highest was 2025 (15,004 t) and the lowest 2018 (2,739 t). Its efficiency percentile within the type went from 68 in 2019 to 47 in 2025 (lower is more efficient). Of the 3 comparable vessels listed below with a 2025 return, 2 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 | 15,004 | 4,775 | 45,714 | 3,788 | 1,018 | 328.2 | 14.0 | 47 |
| 2024 | 11,816 | 3,762 | 35,793 | 2,921 | 1,172 | 330.1 | 10.3 | 22 |
| 2023 | 9,086 | 2,881 | 26,224 | 2,238 | 783 | 346.5 | 10.2 | 68 |
| 2022 | 5,355 | 1,695 | 14,256 | 1,280 | 810 | 375.7 | 14.0 | 83 |
| 2020 | 6,290 | 1,994 | 20,538 | 1,832 | 419 | 306.2 | 10.6 | 65 |
| 2019 | 12,572 | 4,009 | 42,312 | 3,669 | 1,302 | 297.1 | 10.5 | 68 |
| 2018 | 2,739 | 873 | — | 1,052 | 592 | 353.1 | 20.7 | not ranked |
Vessel particulars
- IMO number
- 9515917
- Ship type
- Chemical tanker
- Gross tonnage
- 29,924
- Length overall
- 183.0 m
- Beam
- 32.0 m
- Year built
- 2013
- Flag state
- Malta per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Panama. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- Valletta MRV 2025
- Technical efficiency (design)
- EEXI (4.95 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-23
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 641 of 1,348 qualifying chemical tankers by EEOI, at the 47th percentile. The dashed line is the type median, 14.4; this vessel reported 14.0.
EEOI divides emissions by transport work, which for this vessel and year was 1,071,735,714 tonne-miles over 45,714 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 447.8% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2021, so the series has gaps.
From 2024 to 2025, emissions rose 27.0% while distance sailed rose 27.7%and CO₂ per nautical mile fell 0.6%.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
- 15,239 t
- Methane (CH₄)
- 0.24 t
- Nitrous oxide (N₂O)
- 0.86 t
- Under EU ETS
- 9,409 t, 63% of total
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).
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.