Oil tanker · Panama flag · built 2009
SERENE SEA: CO₂ emissions 2018–2025
IMO 9442017 6 reporting years
- CO₂ reported 2022
- 7,441 t
- Fuel burned
- 2,371 t
- Distance
- 12,333 nm
- Time at sea
- 1,075 h
- Emitted at berth
- 20% of total
- Share of year under way
- 12%
- Gross tonnage
- 55,894
SERENE SEA against its type
Built in 2009, it is 1 year older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 55,894 gross tonnage it is smaller than 57% of the other 2,841 oil tankers with a recorded tonnage. It is one of 244 oil tankers here under the Panama flag, 6.9% of the 3,548 on the register. The same builder is recorded for 57 other vessels here, 42 of them oil tankers. Its MRV returns name it SERENE SEA for 2018–2022 and SWAN LAKE for 2025. The reported port of registry changed: Monrovia (2018–2022), then PANAMA (2025).
Its 7,441 t of CO₂ for 2022 is close to the median of 7,189 t among the 1,939 oil tankers on this register that reported for 2022. Per nautical mile it emitted 603.3 kg CO₂, 45% above the type median of 415.9 kg. It logged 1,075 hours at sea against a median of 1,731 hours for its type that year. 20.0% of its 2022 emissions were at berth; the median for oil tankers was 9.1%. Across 5 years with reported emissions, the highest was 2018 (9,068 t) and the lowest 2021 (2,588 t). Its efficiency percentile within the type went from 49 in 2018 to 39 in 2022 (lower is more efficient).
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2022 | 7,441 | 2,371 | 12,333 | 1,075 | 1,488 | 603.3 | 7.1 | 39 |
| 2021 | 2,588 | 829 | — | 624 | 55 | 332.9 | 20.5 | not ranked |
| 2020 | 3,476 | 1,111 | 7,314 | 620 | 367 | 475.2 | 9.8 | 59 |
| 2019 | 5,430 | 1,738 | 9,788 | 999 | 202 | 554.8 | 6.5 | 28 |
| 2018 | 9,068 | 2,897 | 19,093 | 1,873 | 204 | 475.0 | 8.4 | 49 |
Vessel particulars
- IMO number
- 9442017
- Previously reported as
- SWAN LAKE
- Ship type
- Oil tanker
- Gross tonnage
- 55,894
- Length overall
- 229.0 m
- Beam
- 42.0 m
- Year built
- 2009
- Flag state
- Panama per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Liberia. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Sumitomo Heavy Industries
- Port of registry
- MONROVIA MRV 2022
- Home port
- MONROVIA
- Technical efficiency (design)
- EEXI (3.45 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2023-06-21
- Compliance document expires
- 2024-06-30
Efficiency against its own type2022
Position 693 of 1,771 qualifying oil tankers by EEOI, at the 39th percentile. The dashed line is the type median, 8.0; this vessel reported 7.1.
EEOI divides emissions by transport work, which for this vessel and year was 1,048,009,859 tonne-miles over 12,333 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2022 was 17.9% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2023, 2024, so the series has gaps.
From 2021 to 2022, emissions rose 187.6% and CO₂ per nautical mile rose 81.2%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2022 emissions occurred
Laden voyages2022
- CO₂ on laden voyages
- 5,953 t, 80% of total
- Fuel, laden
- 1,904 t
- CO₂ per nm, laden
- 482.7 kg
The rest of the 2022 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2020 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2025 | 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 6 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: 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.