LNG carrier · Marshall Islands flag · built 2009
ONAIZA: CO₂ emissions 2018–2025
IMO 9397353 EU ETS7 reporting years
- CO₂ reported 2025
- 20,693 t
- Fuel burned
- 6,710 t
- Time at sea
- 1,265 h
- Emitted at berth
- 1% of total
- Share of year under way
- 14%
- Gross tonnage
- 136,980
ONAIZA against its type
Built in 2009, it is 5 years older than the median LNG carrier on this register, which was built in 2014 (396 vessels with a known build year). At 136,980 gross tonnage it is larger than 92% of the other 377 LNG carriers with a recorded tonnage. It is one of 111 LNG carriers here under the Marshall Islands flag, 20.6% of the 538 on the register. The same builder is recorded for 660 other vessels here, 109 of them LNG carriers. The returns for 2018–2025 all give Majuro as port of registry.
Its 20,693 t of CO₂ for 2025 is close to the median of 21,516 t among the 351 LNG carriers on this register that reported for 2025. Per nautical mile it emitted 1,031.8 kg CO₂, 1.9 times the type median of 533.6 kg. It logged 1,265 hours at sea against a median of 2,940 hours for its type that year. 1.0% of its 2025 emissions were at berth; the median for LNG carriers was 2.0%. Across 7 years with reported emissions, the highest was 2019 (77,530 t) and the lowest 2021 (14,920 t). Of the 3 sister ships listed below with a 2025 return, 3 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 | 20,693 | 6,710 | — | 1,265 | 216 | 1,031.8 | — | — |
| 2023 | 47,592 | 15,094 | — | 2,588 | 2,250 | 1,233.4 | — | — |
| 2022 | 27,047 | 8,575 | — | 1,461 | 504 | 1,233.8 | — | — |
| 2021 | 14,920 | 4,722 | — | 1,027 | 343 | 1,024.4 | — | — |
| 2020 | 44,444 | 14,096 | — | 2,421 | 3,001 | 1,132.4 | — | — |
| 2019 | 77,530 | 24,804 | — | 6,669 | 2,419 | 1,074.0 | — | — |
| 2018 | 44,678 | 14,412 | — | 2,755 | 829 | 1,047.6 | — | — |
Vessel particulars
- IMO number
- 9397353
- Ship type
- LNG carrier
- Gross tonnage
- 136,980
- Length overall
- 315.0 m
- Beam
- 50.0 m
- Year built
- 2009
- Flag state
- Marshall Islands per EU MRV 2025
- Builder
- Hanwha Ocean
- Port of registry
- Majuro MRV 2025
- Technical efficiency (design)
- EEXI (6.13 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-10
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 53.7% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2024, so the series has gaps.
From 2023 to 2025, emissions fell 56.5% and CO₂ per nautical mile fell 16.3%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 21,007 t
- Methane (CH₄)
- 0.30 t
- Nitrous oxide (N₂O)
- 1.15 t
- Under EU ETS
- 10,455 t, 51% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2025 | DNV | Germany |
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 7 MRV reporting years and 5 of 5 vessel particulars. Not found in the sources for this vessel: an efficiency ranking, 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.