Chemical tanker · Liberia flag · built 2016
BW ARGON: CO₂ emissions 2018–2025
IMO 9716004 MMSI 636019198EU ETS8 reporting years
- CO₂ reported 2025
- 7,386 t
- Fuel burned
- 2,358 t
- Distance
- 36,368 nm
- Time at sea
- 3,208 h
- Emitted at berth
- 10% of total
- Share of year under way
- 37%
- Gross tonnage
- 11,918
BW ARGON against its type
Built in 2016, it is 6 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 11,918 gross tonnage it is smaller than 71% 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. Its MRV returns name it BW ARGON for 2018 and CHEM ARGON for 2019–2025. The reported port of registry changed: Douglas (2018), then MONROVIA (2019–2025).
Its 7,386 t of CO₂ for 2025 is 34% above the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 203.1 kg CO₂, 19% below the type median of 250.2 kg. It logged 3,208 hours at sea against a median of 2,106 hours for its type that year. 9.9% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 8 years with reported emissions, the highest was 2023 (7,615 t) and the lowest 2018 (2,543 t). Its efficiency percentile within the type went from 87 in 2018 to 56 in 2025 (lower is more efficient). Of the 8 comparable vessels listed below with a 2025 return, 6 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 | 7,386 | 2,358 | 36,368 | 3,208 | 730 | 203.1 | 15.7 | 56 |
| 2024 | 7,224 | 2,297 | 32,516 | 3,198 | 415 | 222.2 | 14.1 | 43 |
| 2023 | 7,615 | 2,419 | 38,521 | 3,584 | 736 | 197.7 | 13.2 | 37 |
| 2022 | 7,583 | 2,419 | 39,584 | 3,829 | 259 | 191.6 | 15.2 | 48 |
| 2021 | 6,029 | 1,902 | 25,618 | 2,558 | 640 | 235.3 | 17.2 | 56 |
| 2020 | 5,863 | 1,851 | 27,477 | 2,517 | 620 | 213.4 | 16.1 | 52 |
| 2019 | 3,477 | 1,105 | 17,179 | 1,785 | 177 | 202.4 | 12.5 | 29 |
| 2018 | 2,543 | 814 | 11,430 | 1,398 | 8 | 222.5 | 35.2 | 87 |
Vessel particulars
- IMO number
- 9716004
- Previously reported as
- CHEM ARGON
- MMSI
- 636019198
- Ship type
- Chemical tanker
- Gross tonnage
- 11,918
- Length overall
- 146.5 m
- Beam
- 24.0 m
- Year built
- 2016
- Flag state
- Liberia per EU MRV 2025
- Port of registry
- Monrovia MRV 2025
- Home port
- Monrovia
- Technical efficiency (design)
- EEDI (7.16 gCO₂/t·nm)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-11
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 749 of 1,348 qualifying chemical tankers by EEOI, at the 56th percentile. The dashed line is the type median, 14.4; this vessel reported 15.7.
EEOI divides emissions by transport work, which for this vessel and year was 471,975,719 tonne-miles over 36,368 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 190.5% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 2.2% while distance sailed rose 11.8%and CO₂ per nautical mile fell 8.6%.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 7,502 t
- Methane (CH₄)
- 0.12 t
- Nitrous oxide (N₂O)
- 0.42 t
- Under EU ETS
- 4,226 t, 57% of total
Observed movementsAIS · Norwegian waters
- First seen
- 19 Feb 2026
- Last seen
- 29 May 2026
- Days observed
- 14
- Positions
- 560
- Median speed
- 9.0 kn
Its recorded positions span 58.0°N to 59.1°N and 8.9°E to 10.2°E.
287 hourly points from 560 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.
Positions recorded per month
Norwegian Coastal Administration open AIS, Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap means the vessel was not recorded here, not that it was idle or that a transponder was off.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | DNV | Germany |
| 2019 | VERIFAVIA (UK) LTD | United Kingdom |
| 2020 | NORMEC VERIFAVIA SAS | France |
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).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 8 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars, AIS movements in Norwegian waters and a name history. Not found in the sources for this vessel: 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.