Chemical tanker · Portugal flag · built 2013
BOTHNIA: CO₂ emissions 2018–2025
IMO 9485356 MMSI 255806224EU ETS8 reporting years
- CO₂ reported 2025
- 7,401 t
- Fuel burned
- 2,322 t
- Distance
- 37,963 nm
- Time at sea
- 3,523 h
- Emitted at berth
- 10% of total
- Share of year under way
- 40%
- Gross tonnage
- 6,382
BOTHNIA against its type
Built in 2013, it is 3 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 6,382 gross tonnage it is smaller than 93% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 71 chemical tankers here under the Portugal flag, 3.0% of the 2,344 on the register. No other vessel on this register is recorded with the same builder. Cunard Line is linked to 5 vessels on this register. The reported port of registry changed: Gibraltar (2018–2020), then Madeira (2021–2025).
Its 7,401 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 194.9 kg CO₂, 22% below the type median of 250.2 kg. It logged 3,523 hours at sea against a median of 2,106 hours for its type that year. 10.0% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 8 years with reported emissions, the highest was 2018 (10,190 t) and the lowest 2023 (7,305 t). Its efficiency percentile within the type went from 91 in 2018 to 98 in 2025 (lower is more efficient). Of the 5 comparable vessels listed below with a 2025 return, 3 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 | 7,401 | 2,322 | 37,963 | 3,523 | 738 | 194.9 | 54.7 | 98 |
| 2024 | 7,358 | 2,295 | 39,597 | 3,761 | 764 | 185.8 | 53.3 | 97 |
| 2023 | 7,305 | 2,278 | 39,038 | 3,475 | 646 | 187.1 | 49.9 | 96 |
| 2022 | 9,482 | 2,958 | 56,803 | 4,816 | 927 | 166.9 | 43.4 | 95 |
| 2021 | 7,718 | 2,408 | 42,101 | 3,785 | 586 | 183.3 | 45.5 | 95 |
| 2020 | 9,145 | 2,853 | 48,990 | 4,558 | 792 | 186.7 | 54.8 | 98 |
| 2019 | 9,100 | 2,846 | 55,408 | 5,293 | 550 | 164.2 | 39.5 | 91 |
| 2018 | 10,190 | 3,206 | 58,382 | 6,213 | 720 | 174.5 | 41.4 | 91 |
Vessel particulars
- IMO number
- 9485356
- MMSI
- 255806224
- Call sign
- CQAN6
- Ship type
- Chemical tanker
- Gross tonnage
- 6,382
- Length overall
- 118.6 m
- Beam
- 19.0 m
- Year built
- 2013
- Flag state
- Portugal per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list United Kingdom. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- John Brown & Company
- Port of registry
- Madeira MRV 2025
- Home port
- Madeira
- Ice class
- IA
- Technical efficiency (design)
- EEXI (11.34 gCO₂/t·nm)
- Operator
- Cunard Line
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-19
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,324 of 1,348 qualifying chemical tankers by EEOI, at the 98th percentile. The dashed line is the type median, 14.4; this vessel reported 54.7.
EEOI divides emissions by transport work, which for this vessel and year was 135,368,392 tonne-miles over 37,963 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 27.4% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 0.6% while distance sailed fell 4.1%and CO₂ per nautical mile rose 4.9%.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 7,515 t
- Methane (CH₄)
- 0.12 t
- Nitrous oxide (N₂O)
- 0.42 t
- Under EU ETS
- 5,295 t, 72% of total
Observed movementsAIS · Norwegian waters
- First seen
- 13 Jul 2025
- Last seen
- 02 Feb 2026
- Days observed
- 16
- Positions
- 911
- Median speed
- 10.6 kn
Its recorded positions span 58.0°N to 60.9°N and 4.4°E to 6.2°E.
210 hourly points from 911 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.
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, 5 of 5 vessel particulars and AIS movements in Norwegian waters. Not found in the sources for this vessel: 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.