Chemical tanker · Panama flag
BLUE BUTTERFLY: CO₂ emissions 2020–2025
IMO 9788576 EU ETS3 reporting years
- CO₂ reported 2025
- 8,888 t
- Fuel burned
- 2,827 t
- Distance
- 34,064 nm
- Time at sea
- 2,762 h
- Emitted at berth
- 9% of total
- Share of year under way
- 32%
BLUE BUTTERFLY against its type
It is one of 259 chemical tankers here under the Panama flag, 11.0% of the 2,344 on the register. The returns for 2021–2025 all give PANAMA as port of registry.
Its 8,888 t of CO₂ for 2025 is 1.6 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 260.9 kg CO₂, close to the type median of 250.2 kg. It logged 2,762 hours at sea against a median of 2,106 hours for its type that year. 9.1% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 3 years with reported emissions, the highest was 2025 (8,888 t) and the lowest 2021 (5,610 t). Its efficiency percentile within the type went from 41 in 2020 to 26 in 2025 (lower is more efficient). Of the 6 comparable vessels listed below with a 2025 return, 5 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 8,888 | 2,827 | 34,064 | 2,762 | 813 | 260.9 | 10.4 | 26 |
| 2021 | 5,610 | 1,791 | 20,803 | 1,703 | 789 | 269.7 | 9.7 | 61 |
| 2020 | 5,737 | 1,833 | 23,050 | 1,815 | 675 | 248.9 | 7.7 | 41 |
Vessel particulars
- IMO number
- 9788576
- Ship type
- Chemical tanker
- Flag state
- Panama per EU MRV 2025
- Port of registry
- Panama MRV 2025
- Technical efficiency (design)
- EEXI (4.7 gCO₂/t·nm)
- Verifier
- Nippon Kaiji Kyokai, Japan
- Accreditation
- VS-21325-01
- Compliance document issued
- 2026-03-19
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 354 of 1,348 qualifying chemical tankers by EEOI, at the 26th percentile. The dashed line is the type median, 14.4; this vessel reported 10.4.
EEOI divides emissions by transport work, which for this vessel and year was 856,289,981 tonne-miles over 34,064 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 54.9% higher than in 2020, for EU/EEA voyages only. No return is recorded for 2022, 2023, 2024, so the series has gaps.
From 2021 to 2025, emissions rose 58.4% while distance sailed rose 63.7%and CO₂ per nautical mile fell 3.2%.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
- 9,027 t
- Methane (CH₄)
- 0.14 t
- Nitrous oxide (N₂O)
- 0.51 t
- Under EU ETS
- 3,713 t, 42% of total
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2020–2025, published by the European Commission.
This page draws on 3 MRV reporting years, an efficiency ranking and 1 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.