Oil tanker · Panama flag
CLEAN NIRVANA: CO₂ emissions 2021–2025
IMO 9308168 EU ETS4 reporting years
- CO₂ reported 2025
- 5,477 t
- Fuel burned
- 1,752 t
- Distance
- 14,851 nm
- Time at sea
- 1,294 h
- Emitted at berth
- 1% of total
- Share of year under way
- 15%
CLEAN NIRVANA against its type
It is one of 244 oil tankers here under the Panama flag, 6.9% of the 3,548 on the register. Its MRV returns name it OCEAN COSMOS for 2021 and CLEAN NIRVANA for 2023–2025. The reported port of registry changed: Singapore (2021), then Panama (2023–2025).
Its 5,477 t of CO₂ for 2025 is 31% below the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 368.8 kg CO₂, close to the type median of 403.2 kg. It logged 1,294 hours at sea against a median of 2,030 hours for its type that year. 1.3% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 4 years with reported emissions, the highest was 2024 (5,947 t) and the lowest 2023 (1,180 t). Its efficiency percentile within the type went from 88 in 2021 to 87 in 2025 (lower is more efficient). The one comparable vessel listed below with a 2025 return reported a higher or equal CO₂ per nautical mile.
Emissions by year2021–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 5,477 | 1,752 | 14,851 | 1,294 | 72 | 368.8 | 15.5 | 87 |
| 2024 | 5,947 | 1,896 | 15,747 | 1,268 | 380 | 377.7 | 25.2 | 96 |
| 2023 | 1,180 | 375 | — | 273 | 81 | 363.4 | 11.3 | not ranked |
| 2021 | 4,220 | 1,336 | 9,196 | 850 | 965 | 458.9 | 18.3 | 88 |
Vessel particulars
- IMO number
- 9308168
- Previously reported as
- OCEAN COSMOS
- Ship type
- Oil tanker
- Flag state
- Panama per EU MRV 2025
- Port of registry
- Panama MRV 2025
- Technical efficiency (design)
- EEXI (4.95 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-11
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,261 of 1,448 qualifying oil tankers by EEOI, at the 87th percentile. The dashed line is the type median, 7.5; this vessel reported 15.5.
EEOI divides emissions by transport work, which for this vessel and year was 352,641,983 tonne-miles over 14,851 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 29.8% higher than in 2021, for EU/EEA voyages only. No return is recorded for 2022, so the series has gaps.
From 2024 to 2025, emissions fell 7.9% while distance sailed fell 5.7%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
- 5,563 t
- Methane (CH₄)
- 0.09 t
- Nitrous oxide (N₂O)
- 0.32 t
- Under EU ETS
- 2,778 t, 51% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2021 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2023 | 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 2021–2025, published by the European Commission.
This page draws on 4 MRV reporting years, an efficiency ranking, 1 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.