LNG carrier · Malta flag · built 2008
BRITISH SAPPHIRE: CO₂ emissions 2018–2025
IMO 9333618 EU ETS7 reporting years
- CO₂ reported 2025
- 24,421 t
- Fuel burned
- 8,051 t
- Time at sea
- 1,020 h
- Emitted at berth
- 1% of total
- Share of year under way
- 12%
- Gross tonnage
- 102,064
BRITISH SAPPHIRE against its type
Built in 2008, it is 6 years older than the median LNG carrier on this register, which was built in 2014 (396 vessels with a known build year). At 102,064 gross tonnage it is smaller than 72% of the other 377 LNG carriers with a recorded tonnage. It is one of 60 LNG carriers here under the Malta flag, 11.2% of the 538 on the register. The same builder is recorded for 761 other vessels here, 41 of them LNG carriers. Its MRV returns name it BRITISH SAPPHIRE for 2018–2021 and COOL ROVER for 2023–2025. The reported port of registry changed: Douglas (2018–2021), then VALLETTA (2023–2025).
Its 24,421 t of CO₂ for 2025 is 14% above the median of 21,516 t among the 351 LNG carriers on this register that reported for 2025. Per nautical mile it emitted 1,965.3 kg CO₂, 3.7 times the type median of 533.6 kg. It logged 1,020 hours at sea against a median of 2,940 hours for its type that year. 0.9% of its 2025 emissions were at berth; the median for LNG carriers was 2.0%. Across 7 years with reported emissions, the highest was 2024 (81,379 t) and the lowest 2018 (6,516 t). Of the 5 sister ships listed below with a 2025 return, 5 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 | 24,421 | 8,051 | — | 1,020 | 222 | 1,965.3 | — | — |
| 2024 | 81,379 | 30,170 | — | 6,840 | 2,143 | 800.8 | — | — |
| 2023 | 25,837 | 9,053 | — | 3,210 | 698 | 675.7 | — | — |
| 2021 | 21,366 | 7,625 | — | 2,187 | 1,702 | 664.8 | — | — |
| 2020 | 34,280 | 12,413 | — | 3,725 | 1,971 | 695.2 | — | — |
| 2019 | 45,781 | 16,546 | — | 2,891 | 17,507 | 1,252.9 | — | — |
| 2018 | 6,516 | 2,366 | — | 462 | 376 | 809.2 | — | — |
Vessel particulars
- IMO number
- 9333618
- Previously reported as
- COOL ROVER
- Ship type
- LNG carrier
- Gross tonnage
- 102,064
- Length overall
- 288.0 m
- Year built
- 2008
- Flag state
- Malta per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Isle of Man. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- HD Hyundai Heavy Industries
- Port of registry
- VALLETTA MRV 2025
- Technical efficiency (design)
- EEXI (7.29 gCO₂/t·nm)
- Verifier
- RINA HELLAS LTD, Greece
- Accreditation
- 1325
- Compliance document issued
- 2026-04-03
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 274.8% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2022, so the series has gaps.
From 2024 to 2025, emissions fell 70.0% and CO₂ per nautical mile rose 145.4%.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
- 26,786 t
- Methane (CH₄)
- 72.54 t
- Nitrous oxide (N₂O)
- 1.26 t
- Under EU ETS
- 20,599 t, 84% 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 | 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 7 MRV reporting years, 5 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.