Chemical tanker · Malta flag · built 2003
ONYX: CO₂ emissions 2018–2021
IMO 9236640 Sanctions listing4 reporting years
- CO₂ reported 2021
- 8,457 t
- Fuel burned
- 2,687 t
- Distance
- 20,051 nm
- Time at sea
- 3,373 h
- Emitted at berth
- 18% of total
- Share of year under way
- 39%
- Gross tonnage
- 29,998
ONYX against its type
Built in 2003, it is 7 years older than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 29,998 gross tonnage it is larger than 89% 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 returns for 2018–2021 all give Valletta as port of registry.
Its 8,457 t of CO₂ for 2021 is 39% above the median of 6,071 t among the 1,418 chemical tankers on this register that reported for 2021. Per nautical mile it emitted 421.8 kg CO₂, 1.6 times the type median of 262.7 kg. It logged 3,373 hours at sea against a median of 2,112 hours for its type that year. 18.4% of its 2021 emissions were at berth; the median for chemical tankers was 8.4%. Across 4 years with reported emissions, the highest was 2018 (11,820 t) and the lowest 2021 (8,457 t). Its efficiency percentile within the type went from 79 in 2018 to 72 in 2021 (lower is more efficient).
Emissions by year2018–2021
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2021 | 8,457 | 2,687 | 20,051 | 3,373 | 1,556 | 421.8 | 22.1 | 72 |
| 2020 | 8,802 | 2,796 | 20,307 | 3,227 | 1,428 | 433.4 | 23.9 | 76 |
| 2019 | 10,660 | 3,409 | 28,146 | 4,049 | 1,256 | 378.8 | 20.5 | 67 |
| 2018 | 11,820 | 3,777 | 31,912 | 3,972 | 1,483 | 370.4 | 26.2 | 79 |
Vessel particulars
- IMO number
- 9236640
- Previously reported as
- CROWN II
- Ship type
- Chemical tanker
- Gross tonnage
- 29,998
- Length overall
- 183.0 m
- Year built
- 2003
- Flag state
- Malta Wikidata/AIS, undated
- Port of registry
- Valletta MRV 2021
- Technical efficiency (design)
- EIV (5.96 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
- 2022-03-18
- Compliance document expires
- 2023-06-30
Efficiency against its own type2021
Position 906 of 1,261 qualifying chemical tankers by EEOI, at the 72nd percentile. The dashed line is the type median, 16.1; this vessel reported 22.1.
EEOI divides emissions by transport work, which for this vessel and year was 381,815,801 tonne-miles over 20,051 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2021 was 28.4% lower than in 2018, for EU/EEA voyages only.
From 2020 to 2021, emissions fell 3.9% while distance sailed fell 1.3%and CO₂ per nautical mile fell 2.7%.That points mainly to how efficiently it sailed, rather than the other.
Where the 2021 emissions occurred
Laden voyages2021
- CO₂ on laden voyages
- 4,899 t, 58% of total
- Fuel, laden
- 1,562 t
- CO₂ per nm, laden
- 341.4 kg
The rest of the 2021 total was emitted on ballast legs or at berth.
Sanctions listings
| List | Programme | Listed | Delisted |
|---|---|---|---|
| ofac_sdn | RUSSIA-EO14024 | — | Still listed |
Reproduced from the published source register as of the build date, and not legal advice. A listing attaches to the vessel with this IMO number; ownership and management may have changed since. Check the issuing authority before relying on it.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2021, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
- Sanctions: ofac_sdn.
This page draws on 4 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars, a name history and a sanctions listing. Not found in the sources for this vessel: AIS movements in Norwegian waters, a licensed photograph 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.