Gas carrier · Malta flag · built 2008
BOW GUARDIAN: CO₂ emissions 2018–2025
IMO 9383338 EU ETS4 reporting years
- CO₂ reported 2025
- 559 t
- Fuel burned
- 178 t
- Time at sea
- 306 h
- Emitted at berth
- 15% of total
- Share of year under way
- 3%
- Gross tonnage
- 9,126
BOW GUARDIAN against its type
Built in 2008, it is 5 years older than the median gas carrier on this register, which was built in 2013 (530 vessels with a known build year). At 9,126 gross tonnage it is smaller than 79% of the other 525 gas carriers with a recorded tonnage. It is one of 59 gas carriers here under the Malta flag, 8.6% of the 688 on the register. Its MRV returns name it BOW GUARDIAN for 2018–2020 and BWEK ARUBA for 2023–2025. The returns for 2018–2025 all give Valletta as port of registry.
Its 559 t of CO₂ for 2025 is 91% below the median of 5,974 t among the 363 gas carriers on this register that reported for 2025. Per nautical mile it emitted 207.6 kg CO₂, 19% below the type median of 256.2 kg. It logged 306 hours at sea against a median of 1,943 hours for its type that year. 15.3% of its 2025 emissions were at berth; the median for gas carriers was 3.8%. Across 4 years with reported emissions, the highest was 2018 (6,570 t) and the lowest 2025 (559 t). Its efficiency percentile within the type went from 90 in 2018 to 67 in 2023 (lower is more efficient). Of the 5 comparable vessels 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 | 559 | 178 | — | 306 | 86 | 207.6 | 115.3 | not ranked |
| 2023 | 2,056 | 656 | 12,238 | 976 | 195 | 168.0 | 58.3 | 67 |
| 2020 | 3,542 | 1,123 | 18,674 | 1,318 | 108 | 189.7 | 77.1 | 77 |
| 2018 | 6,570 | 2,088 | 25,844 | 1,986 | 423 | 254.2 | 125.0 | 90 |
Vessel particulars
- IMO number
- 9383338
- Previously reported as
- BWEK ARUBA
- Ship type
- Gas carrier
- Gross tonnage
- 9,126
- Length overall
- 120.6 m
- Beam
- 19.8 m
- Year built
- 2008
- Flag state
- Malta per EU MRV 2025
- Port of registry
- Valletta MRV 2025
- Technical efficiency (design)
- EEXI (13.3 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-03-27
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 91.5% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2021, 2022, 2024, so the series has gaps.
From 2023 to 2025, emissions fell 72.8% and CO₂ per nautical mile rose 23.6%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 568 t
- Methane (CH₄)
- 0.01 t
- Nitrous oxide (N₂O)
- 0.03 t
- Under EU ETS
- 432 t, 77% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2023 | HELLENIC LLOYD'S S.A. | 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 4 MRV reporting years, 4 of 5 vessel particulars and a name history. Not found in the sources for this vessel: an efficiency ranking, 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.