Oil tanker · Malta flag · built 2010
ZAPPHIRE: CO₂ emissions 2018–2025
IMO 9391957 EU ETS8 reporting years
- CO₂ reported 2025
- 15,949 t
- Fuel burned
- 5,043 t
- Distance
- 38,513 nm
- Time at sea
- 4,040 h
- Emitted at berth
- 19% of total
- Share of year under way
- 46%
- Gross tonnage
- 27,015
ZAPPHIRE against its type
Built in 2010, it is the same age as the median oil tanker on this register (build year 2010, 2,896 vessels with a known build year). At 27,015 gross tonnage it is smaller than 85% 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 103 other vessels here, 61 of them oil tankers. The returns for 2019–2025 all give Valletta as port of registry.
Its 15,949 t of CO₂ for 2025 is 2.0 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 414.1 kg CO₂, close to the type median of 403.2 kg. It logged 4,040 hours at sea against a median of 2,030 hours for its type that year. 18.9% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2025 (15,949 t) and the lowest 2019 (12,971 t). Its efficiency percentile within the type went from 98 in 2019 to 93 in 2025 (lower is more efficient). Of the 5 sister ships listed below with a 2025 return, 5 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 | 15,949 | 5,043 | 38,513 | 4,040 | 3,018 | 414.1 | 21.4 | 93 |
| 2024 | 15,099 | 4,798 | 35,571 | 4,105 | 3,289 | 424.5 | 23.1 | 94 |
| 2023 | 14,462 | 4,602 | 31,417 | 3,809 | 3,203 | 460.3 | 33.2 | 98 |
| 2022 | 15,170 | 4,829 | 32,798 | 4,231 | 3,115 | 462.5 | 29.2 | 97 |
| 2021 | 14,965 | 4,770 | 26,627 | 3,417 | 3,333 | 562.0 | 36.1 | 98 |
| 2020 | 13,227 | 4,207 | 30,137 | 4,191 | 1,450 | 438.9 | 28.7 | 95 |
| 2019 | 12,971 | 4,127 | 22,940 | 4,890 | 5,739 | 565.5 | 35.4 | 98 |
| 2018 | 14,466 | 4,602 | — | 4,968 | 3,760 | 386.4 | — | — |
Vessel particulars
- IMO number
- 9391957
- Ship type
- Oil tanker
- Gross tonnage
- 27,015
- Length overall
- 183.0 m
- Beam
- 32.2 m
- Year built
- 2010
- Flag state
- Malta per EU MRV 2025
- Builder
- Onomichi Dockyard
- Port of registry
- Valletta MRV 2025
- Home port
- Valletta
- Technical efficiency (design)
- EIV (6.41 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-03-26
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,350 of 1,448 qualifying oil tankers by EEOI, at the 93rd percentile. The dashed line is the type median, 7.5; this vessel reported 21.4.
EEOI divides emissions by transport work, which for this vessel and year was 747,021,077 tonne-miles over 38,513 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 10.3% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 5.6% while distance sailed rose 8.3%and CO₂ per nautical mile fell 2.4%.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
- 16,197 t
- Methane (CH₄)
- 0.25 t
- Nitrous oxide (N₂O)
- 0.91 t
- Under EU ETS
- 13,873 t, 87% of total
Laden voyages2025
- CO₂ on laden voyages
- 12,931 t, 81% of total
- Fuel, laden
- 4,094 t
The rest of the 2025 total was emitted on ballast legs or at berth.
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).
This page draws on 8 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.