Oil tanker · Hong Kong flag · built 2017
COSFLOURISH LAKE: CO₂ emissions 2018–2025
IMO 9783356 EU ETS3 reporting years
- CO₂ reported 2025
- 18,376 t
- Fuel burned
- 5,891 t
- Distance
- 24,084 nm
- Time at sea
- 2,289 h
- Emitted at berth
- 4% of total
- Share of year under way
- 26%
- Gross tonnage
- 162,542
COSFLOURISH LAKE against its type
Built in 2017, it is 7 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 162,542 gross tonnage it is larger than 97% of the other 2,841 oil tankers with a recorded tonnage. It is one of 139 oil tankers here under the Hong Kong flag, 3.9% of the 3,548 on the register. The same builder is recorded for 146 other vessels here, 55 of them oil tankers. The reported port of registry changed: HONGKONG (2018), then HONG KONG (2024–2025).
Its 18,376 t of CO₂ for 2025 is 2.3 times the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 763.0 kg CO₂, 1.9 times the type median of 403.2 kg. It logged 2,289 hours at sea against a median of 2,030 hours for its type that year. 4.0% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 3 years with reported emissions, the highest was 2025 (18,376 t) and the lowest 2024 (10,590 t). Its efficiency percentile within the type went from 1 in 2018 to 3 in 2025 (lower is more efficient). Of the 3 sister ships listed below with a 2025 return, 2 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 | 18,376 | 5,891 | 24,084 | 2,289 | 735 | 763.0 | 3.4 | 3 |
| 2024 | 10,590 | 3,366 | 17,458 | 2,139 | 1,003 | 606.6 | 3.7 | 5 |
| 2018 | 14,585 | 4,675 | 22,710 | 1,990 | 479 | 642.2 | 2.4 | 1 |
Vessel particulars
- IMO number
- 9783356
- Ship type
- Oil tanker
- Gross tonnage
- 162,542
- Length overall
- 333.0 m
- Beam
- 60.0 m
- Year built
- 2017
- Flag state
- Hong Kong per EU MRV 2025
- Port of registry
- HONG KONG MRV 2025
- Technical efficiency (design)
- EEDI (2.19 gCO₂/t·nm)
- Verifier
- CHINA CLASSIFICATION SOCIETY, China
- Accreditation
- 0003VV
- Compliance document issued
- 2026-03-20
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 46 of 1,448 qualifying oil tankers by EEOI, at the 3rd percentile. The dashed line is the type median, 7.5; this vessel reported 3.4.
EEOI divides emissions by transport work, which for this vessel and year was 5,436,576,923 tonne-miles over 24,084 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 26.0% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2020, 2021, 2022, 2023, so the series has gaps.
From 2024 to 2025, emissions rose 73.5% while distance sailed rose 38.0%and CO₂ per nautical mile rose 25.8%.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 18,665 t
- Methane (CH₄)
- 0.29 t
- Nitrous oxide (N₂O)
- 1.06 t
- Under EU ETS
- 11,181 t, 61% of total
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 3 MRV reporting years, an efficiency ranking and 5 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.