Chemical tanker · Malta flag · built 2007
ESSEX STAR: CO₂ emissions 2018–2025
IMO 9348297 EU ETS8 reporting years
- CO₂ reported 2025
- 8,526 t
- Fuel burned
- 2,659 t
- Distance
- 24,660 nm
- Time at sea
- 2,723 h
- Emitted at berth
- 14% of total
- Share of year under way
- 31%
- Gross tonnage
- 12,137
ESSEX STAR against its type
Built in 2007, it is 3 years older than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 12,137 gross tonnage it is smaller than 68% 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. Its MRV returns name it PATRAS for 2018–2020 and ESSEX STAR for 2021–2025. The returns for 2018–2025 all give Valletta as port of registry.
Its 8,526 t of CO₂ for 2025 is 1.5 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 345.7 kg CO₂, 38% above the type median of 250.2 kg. It logged 2,723 hours at sea against a median of 2,106 hours for its type that year. 14.5% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 8 years with reported emissions, the highest was 2024 (10,116 t) and the lowest 2018 (6,111 t). Its efficiency percentile within the type went from 97 in 2018 to 96 in 2025 (lower is more efficient). Of the 5 comparable vessels 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 | 8,526 | 2,659 | 24,660 | 2,723 | 1,233 | 345.7 | 45.3 | 96 |
| 2024 | 10,116 | 3,155 | 34,434 | 3,370 | 1,528 | 293.8 | 45.0 | 94 |
| 2023 | 7,732 | 2,412 | 25,297 | 2,425 | 1,592 | 305.6 | 43.9 | 93 |
| 2022 | 6,897 | 2,151 | 26,163 | 2,142 | 2,937 | 263.6 | 38.9 | 91 |
| 2021 | 9,545 | 2,984 | 32,792 | 3,471 | 1,461 | 291.1 | 41.0 | 92 |
| 2020 | 8,962 | 2,810 | 26,448 | 2,619 | 2,508 | 338.8 | 40.8 | 92 |
| 2019 | 7,492 | 2,364 | 26,344 | 4,210 | 897 | 284.4 | 31.2 | 84 |
| 2018 | 6,111 | 1,925 | 22,445 | 3,497 | 645 | 272.3 | 53.7 | 97 |
Vessel particulars
- IMO number
- 9348297
- Previously reported as
- PATRAS
- Ship type
- Chemical tanker
- Gross tonnage
- 12,137
- Length overall
- 144.1 m
- Year built
- 2007
- Flag state
- Malta per EU MRV 2025
- Port of registry
- Valletta MRV 2025
- Home port
- Valletta
- Ice class
- IA
- Technical efficiency (design)
- EEXI (8.76 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
- 2026-04-06
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,291 of 1,348 qualifying chemical tankers by EEOI, at the 96th percentile. The dashed line is the type median, 14.4; this vessel reported 45.3.
EEOI divides emissions by transport work, which for this vessel and year was 188,089,345 tonne-miles over 24,660 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 39.5% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 15.7% while distance sailed fell 28.4%and CO₂ per nautical mile rose 17.7%.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
- 8,657 t
- Methane (CH₄)
- 0.13 t
- Nitrous oxide (N₂O)
- 0.48 t
- Under EU ETS
- 6,809 t, 80% of total
Laden voyages2025
- CO₂ on laden voyages
- 4,662 t, 55% of total
- Fuel, laden
- 1,454 t
- CO₂ per nm, laden
- 300.2 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Swiss Climate EcoCare GmbH | Germany |
| 2021 | 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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 8 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.