Container ship · Antigua and Barbuda flag · built 2006
JSP SLEIPNER: CO₂ emissions 2018–2025
IMO 9347774 EU ETS8 reporting years
- CO₂ reported 2025
- 11,135 t
- Fuel burned
- 3,540 t
- Distance
- 40,956 nm
- Time at sea
- 3,794 h
- Emitted at berth
- 6% of total
- Share of year under way
- 43%
- Gross tonnage
- 9,981
JSP SLEIPNER against its type
Built in 2006, it is 2 years older than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 9,981 gross tonnage it is smaller than 90% of the other 3,000 container ships with a recorded tonnage. It is one of 73 container ships here under the Antigua and Barbuda flag, 2.1% of the 3,495 on the register. The same builder is recorded for 19 other vessels here, 9 of them container ships. Its MRV returns name it JSP SLEIPNER for 2018–2023, NCL MAKRELL for 2024 and SYNETOS for 2025. The returns for 2018–2025 all give St. John's as port of registry.
Its 11,135 t of CO₂ for 2025 is 32% below the median of 16,359 t among the 2,234 container ships on this register that reported for 2025. Per nautical mile it emitted 271.9 kg CO₂, 50% below the type median of 545.6 kg. It logged 3,794 hours at sea against a median of 3,155 hours for its type that year. 5.8% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 8 years with reported emissions, the highest was 2020 (20,467 t) and the lowest 2018 (8,816 t). Its efficiency percentile within the type went from 99 in 2019 to 95 in 2025 (lower is more efficient). Of the 6 sister ships listed below with a 2025 return, 3 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 | 11,135 | 3,540 | 40,956 | 3,794 | 640 | 271.9 | 46.4 | 95 |
| 2024 | 15,964 | 5,035 | 58,549 | 4,597 | 1,682 | 272.7 | 60.5 | 99 |
| 2023 | 14,933 | 4,658 | 54,508 | 4,329 | 908 | 273.9 | 71.1 | 99 |
| 2022 | 16,819 | 5,246 | 57,298 | 4,198 | 1,252 | 293.5 | 61.2 | 98 |
| 2021 | 19,902 | 6,208 | 57,411 | 4,357 | 1,246 | 346.6 | 68.1 | 99 |
| 2020 | 20,467 | 6,384 | 60,218 | 4,687 | 1,357 | 339.9 | 70.4 | 99 |
| 2019 | 16,311 | 5,149 | 48,857 | 4,098 | 1,154 | 333.9 | 68.5 | 99 |
| 2018 | 8,816 | 2,828 | — | 4,205 | 320 | 306.6 | 53.5 | not ranked |
Vessel particulars
- IMO number
- 9347774
- Previously reported as
- NCL MAKRELL, SYNETOS
- Ship type
- Container ship
- Gross tonnage
- 9,981
- Length overall
- 139.2 m
- Year built
- 2006
- Flag state
- Antigua and Barbuda per EU MRV 2025
- Builder
- Yangfan Group Co.
- Port of registry
- St. John's MRV 2025
- Home port
- St. John's
- Technical efficiency (design)
- EEXI (24.6 gCO₂/t·nm)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-31
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,750 of 1,838 qualifying container ships by EEOI, at the 95th percentile. The dashed line is the type median, 14.2; this vessel reported 46.4.
EEOI divides emissions by transport work, which for this vessel and year was 239,935,143 tonne-miles over 40,956 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 26.3% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 30.2% while distance sailed fell 30.0%and CO₂ per nautical mile fell 0.3%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 11,309 t
- Methane (CH₄)
- 0.18 t
- Nitrous oxide (N₂O)
- 0.64 t
- Under EU ETS
- 746 t, 7% of total
Laden voyages2025
- CO₂ on laden voyages
- 7,532 t, 68% of total
- Fuel, laden
- 2,396 t
- CO₂ per nm, laden
- 264.2 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Bureau Veritas Certification France | France |
| 2021 | Swiss Climate EcoCare GmbH | Germany |
| 2025 | NORMEC VERIFAVIA SAS | France |
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) and Wikimedia Commons.
This page draws on 8 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.