Chemical tanker · Panama flag
SHAMROCK MERCURY: CO₂ emissions 2021–2025
IMO 9477531 EU ETS2 reporting years
- CO₂ reported 2025
- 1,585 t
- Fuel burned
- 501 t
- Distance
- 7,445 nm
- Time at sea
- 567 h
- Emitted at berth
- 2% of total
- Share of year under way
- 6%
SHAMROCK MERCURY against its type
It is one of 259 chemical tankers here under the Panama flag, 11.0% of the 2,344 on the register.
Its 1,585 t of CO₂ for 2025 is 71% below the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 212.9 kg CO₂, 15% below the type median of 250.2 kg. It logged 567 hours at sea against a median of 2,106 hours for its type that year. 1.6% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Its efficiency percentile within the type went from 73 in 2021 to 54 in 2025 (lower is more efficient). Of the 6 comparable vessels listed below with a 2025 return, 2 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2021–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 1,585 | 501 | 7,445 | 567 | 26 | 212.9 | 15.3 | 54 |
| 2021 | 3,029 | 964 | 13,371 | 1,012 | 247 | 226.5 | 23.0 | 73 |
Vessel particulars
- IMO number
- 9477531
- Ship type
- Chemical tanker
- Flag state
- Panama per EU MRV 2021
- Technical efficiency (design)
- EEDI (7.77 gCO₂/t·nm)
- Verifier
- Nippon Kaiji Kyokai, Japan
- Accreditation
- VS-21325-01
- Compliance document issued
- 2026-03-31
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 729 of 1,348 qualifying chemical tankers by EEOI, at the 54th percentile. The dashed line is the type median, 14.4; this vessel reported 15.3.
EEOI divides emissions by transport work, which for this vessel and year was 103,644,866 tonne-miles over 7,445 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 47.7% lower than in 2021, for EU/EEA voyages only. No return is recorded for 2022, 2023, 2024, so the series has gaps.
From 2021 to 2025, emissions fell 47.7% while distance sailed fell 44.3%and CO₂ per nautical mile fell 6.0%.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
- 1,609 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.09 t
- Under EU ETS
- 805 t, 51% of total
Laden voyages2025
- CO₂ on laden voyages
- 1,077 t, 68% of total
- Fuel, laden
- 342 t
The rest of the 2025 total was emitted on ballast legs or at berth.
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 2 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.