LNG carrier · Singapore flag · built 2011
BW ENN CRYSTAL SKY: CO₂ emissions 2018–2024
IMO 9383900 EU ETS4 reporting years
- CO₂ reported 2024
- 49,217 t
- Fuel burned
- 18,272 t
- Time at sea
- 3,954 h
- Emitted at berth
- 3% of total
- Share of year under way
- 45%
- Gross tonnage
- 109,949
BW ENN CRYSTAL SKY against its type
Built in 2011, it is 3 years older than the median LNG carrier on this register, which was built in 2014 (396 vessels with a known build year). At 109,949 gross tonnage it is smaller than 56% of the other 377 LNG carriers with a recorded tonnage. It is one of 33 LNG carriers here under the Singapore flag, 6.1% of the 538 on the register. The same builder is recorded for 660 other vessels here, 109 of them LNG carriers. Its MRV returns name it STENA CRYSTAL SKY for 2018–2023 and BW ENN CRYSTAL SKY for 2024. The reported port of registry changed: Stranraer (2020–2023), then Singapore (2024).
Its 49,217 t of CO₂ for 2024 is 3.1 times the median of 15,704 t among the 348 LNG carriers on this register that reported for 2024. Per nautical mile it emitted 768.8 kg CO₂, 39% above the type median of 552.7 kg. It logged 3,954 hours at sea against a median of 2,215 hours for its type that year. 3.0% of its 2024 emissions were at berth; the median for LNG carriers was 1.6%. Across 4 years with reported emissions, the highest was 2023 (74,515 t) and the lowest 2020 (8,603 t).
Emissions by year2018–2024
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2024 | 49,217 | 18,272 | — | 3,954 | 1,485 | 768.8 | — | — |
| 2023 | 74,515 | 27,003 | — | 5,748 | 1,540 | 767.6 | — | — |
| 2020 | 8,603 | 3,100 | — | 599 | 62 | 826.3 | — | — |
| 2018 | 10,930 | 3,779 | — | 936 | 1,871 | 774.1 | — | — |
Vessel particulars
- IMO number
- 9383900
- Previously reported as
- STENA CRYSTAL SKY
- Ship type
- LNG carrier
- Gross tonnage
- 109,949
- Length overall
- 298.0 m
- Year built
- 2011
- Flag state
- Singapore per EU MRV 2024
Sources disagree: Wikidata/AIS (undated) list United Kingdom. The flag shown is from the newest official source, the EU MRV return for 2024. - Builder
- Hanwha Ocean
- Port of registry
- Singapore MRV 2024
- Ice class
- IC
- Technical efficiency (design)
- EEXI (6.71 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2025-09-10
- Compliance document expires
- 2026-06-30
Reported CO₂ by year
Reported CO₂ in 2024 was 350.3% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2021, 2022, so the series has gaps.
From 2023 to 2024, emissions fell 34.0% and CO₂ per nautical mile rose 0.2%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2024 emissions occurred
Methane, nitrous oxide and EU ETS2024
- Total CO₂ equivalent
- 62,049 t
- Methane (CH₄)
- 439.44 t
- Nitrous oxide (N₂O)
- 1.99 t
- Under EU ETS
- 14,554 t, 30% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2020 | DNV | Germany |
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 2018–2024, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 4 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.