Chemical tanker · Liberia flag
SEAWAYS HERCULES: CO₂ emissions 2019–2025
IMO 9328285 4 reporting years
- CO₂ reported 2022
- 2,459 t
- Fuel burned
- 780 t
- Distance
- 7,490 nm
- Time at sea
- 556 h
- Emitted at berth
- 17% of total
- Share of year under way
- 6%
SEAWAYS HERCULES against its type
It is one of 402 chemical tankers here under the Liberia flag, 17.2% of the 2,344 on the register. Its MRV returns name it ATROTOS for 2019–2020 and SEAWAYS HERCULES for 2022–2025. The returns for 2019–2025 all give MONROVIA as port of registry.
Its 2,459 t of CO₂ for 2022 is 58% below the median of 5,807 t among the 1,486 chemical tankers on this register that reported for 2022. Per nautical mile it emitted 328.3 kg CO₂, 23% above the type median of 266.3 kg. It logged 556 hours at sea against a median of 1,995 hours for its type that year. 17.0% of its 2022 emissions were at berth; the median for chemical tankers was 8.6%. Across 3 years with reported emissions, the highest was 2019 (12,482 t) and the lowest 2022 (2,459 t). Its efficiency percentile within the type went from 45 in 2019 to 16 in 2022 (lower is more efficient). Of the 2 comparable vessels listed below with a 2022 return, 0 reported a lower CO₂ per nautical mile than this vessel.
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2022 | 2,459 | 780 | 7,490 | 556 | 417 | 328.3 | 9.9 | 16 |
| 2020 | 8,831 | 2,809 | 26,202 | 2,249 | 789 | 337.0 | 12.6 | 30 |
| 2019 | 12,482 | 3,953 | 35,517 | 3,320 | 1,003 | 351.4 | 15.6 | 45 |
Vessel particulars
- IMO number
- 9328285
- Previously reported as
- ATROTOS
- Ship type
- Chemical tanker
- Length overall
- 184.0 m
- Beam
- 32.0 m
- Flag state
- Liberia per EU MRV 2025
- Port of registry
- Monrovia MRV 2022
- Ice class
- IA
- Technical efficiency (design)
- EIV (7.89 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2023-06-12
- Compliance document expires
- 2024-06-30
Efficiency against its own type2022
Position 209 of 1,334 qualifying chemical tankers by EEOI, at the 16th percentile. The dashed line is the type median, 15.7; this vessel reported 9.9.
EEOI divides emissions by transport work, which for this vessel and year was 249,405,680 tonne-miles over 7,490 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2022 was 80.3% lower than in 2019, for EU/EEA voyages only. No return is recorded for 2021, 2023, 2024, so the series has gaps.
From 2020 to 2022, emissions fell 72.2% while distance sailed fell 71.4%and CO₂ per nautical mile fell 2.6%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2022 emissions occurred
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2019–2025, published by the European Commission.
This page draws on 4 MRV reporting years, an efficiency ranking, 2 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.