Chemical tanker · Liberia flag · built 2007
CHEM HELEN: CO₂ emissions 2018–2025
IMO 9340116 EU ETS8 reporting years
- CO₂ reported 2025
- 1,280 t
- Fuel burned
- 411 t
- Distance
- 4,420 nm
- Time at sea
- 377 h
- Emitted at berth
- 0% of total
- Share of year under way
- 4%
- Gross tonnage
- 24,112
CHEM HELEN against its type
Built in 2007, it is 3 years older than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 24,112 gross tonnage it is larger than 56% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 402 chemical tankers here under the Liberia flag, 17.2% of the 2,344 on the register. The same builder is recorded for 192 other vessels here, 87 of them chemical tankers. The returns for 2020–2025 all give Monrovia as port of registry.
Its 1,280 t of CO₂ for 2025 is 77% 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 289.6 kg CO₂, 16% above the type median of 250.2 kg. It logged 377 hours at sea against a median of 2,106 hours for its type that year. 0.5% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 8 years with reported emissions, the highest was 2019 (10,354 t) and the lowest 2025 (1,280 t). Its efficiency percentile within the type went from 63 in 2018 to 30 in 2025 (lower is more efficient). Of the 5 sister ships listed below with a 2025 return, 0 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 | 1,280 | 411 | 4,420 | 377 | 6 | 289.6 | 11.1 | 30 |
| 2024 | 2,281 | 725 | 7,728 | 775 | 225 | 295.2 | 21.9 | 68 |
| 2023 | 1,456 | 466 | 4,547 | 501 | 105 | 320.1 | 22.7 | 70 |
| 2022 | 9,852 | 3,127 | 29,953 | 2,331 | 890 | 328.9 | 11.9 | 29 |
| 2021 | 7,138 | 2,261 | 27,423 | 2,522 | 184 | 260.3 | 8.6 | 7 |
| 2020 | 7,169 | 2,264 | 23,658 | 2,002 | 650 | 303.0 | 10.7 | 18 |
| 2019 | 10,354 | 3,304 | 34,661 | 3,933 | 391 | 298.7 | 11.7 | 24 |
| 2018 | 3,973 | 1,272 | 11,810 | 1,024 | 399 | 336.4 | 19.2 | 63 |
Vessel particulars
- IMO number
- 9340116
- Ship type
- Chemical tanker
- Gross tonnage
- 24,112
- Length overall
- 183.0 m
- Beam
- 27.4 m
- Year built
- 2007
- Flag state
- Liberia per EU MRV 2025
- Port of registry
- Monrovia MRV 2025
- Home port
- Monrovia
- Technical efficiency (design)
- EEXI (5.65 gCO₂/t·nm)
- Verifier
- RINA HELLAS LTD, Greece
- Accreditation
- 1325
- Compliance document issued
- 2026-04-06
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 411 of 1,348 qualifying chemical tankers by EEOI, at the 30th percentile. The dashed line is the type median, 14.4; this vessel reported 11.1.
EEOI divides emissions by transport work, which for this vessel and year was 115,114,209 tonne-miles over 4,420 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 67.8% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 43.9% while distance sailed fell 42.8%and CO₂ per nautical mile fell 1.9%.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
- 1,300 t
- Methane (CH₄)
- 0.02 t
- Nitrous oxide (N₂O)
- 0.07 t
- Under EU ETS
- 643 t, 50% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | RINA Services Spa | Italy |
| 2022 | RINA HELLAS LTD | Greece |
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 8 MRV reporting years, an efficiency ranking and 5 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.