Container ship · Liberia flag · built 2004
HSL PORTSMOUTH: CO₂ emissions 2018–2025
IMO 9302437 EU ETS8 reporting years
- CO₂ reported 2025
- 1,966 t
- Fuel burned
- 631 t
- Time at sea
- 362 h
- Emitted at berth
- 2% of total
- Share of year under way
- 4%
- Gross tonnage
- 25,406
HSL PORTSMOUTH against its type
Built in 2004, it is 4 years older than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 25,406 gross tonnage it is smaller than 72% of the other 3,000 container ships with a recorded tonnage. It is one of 976 container ships here under the Liberia flag, 27.9% of the 3,495 on the register. The same builder is recorded for 61 other vessels here, 49 of them container ships. Its MRV returns name it HSL PORTSMOUTH for 2018–2021 and PORTSMOUTH for 2022–2025. The returns for 2019–2025 all give Monrovia as port of registry.
Its 1,966 t of CO₂ for 2025 is 88% 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 481.5 kg CO₂, 12% below the type median of 545.6 kg. It logged 362 hours at sea against a median of 3,155 hours for its type that year. 2.3% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 8 years with reported emissions, the highest was 2018 (19,836 t) and the lowest 2024 (1,708 t). Its efficiency percentile within the type went from 58 in 2018 to 78 in 2022 (lower is more efficient). Of the 4 sister ships listed below with a 2025 return, 4 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 | 1,966 | 631 | — | 362 | 46 | 481.5 | 29.1 | not ranked |
| 2024 | 1,708 | 548 | — | 388 | 13 | 356.8 | 19.0 | not ranked |
| 2023 | 3,558 | 1,142 | — | 958 | 0 | 310.1 | 30.9 | not ranked |
| 2022 | 5,627 | 1,793 | 14,152 | 706 | 13 | 397.6 | 29.1 | 78 |
| 2021 | 3,601 | 1,156 | — | 466 | 39 | 459.3 | 22.4 | not ranked |
| 2020 | 2,045 | 656 | — | 334 | 42 | 430.8 | 20.1 | not ranked |
| 2019 | 6,891 | 2,211 | 17,869 | 1,725 | 198 | 385.7 | 16.6 | 48 |
| 2018 | 19,836 | 6,356 | 49,037 | 3,506 | 312 | 404.5 | 21.4 | 58 |
Vessel particulars
- IMO number
- 9302437
- Previously reported as
- PORTSMOUTH
- Ship type
- Container ship
- Gross tonnage
- 25,406
- Length overall
- 207.5 m
- Beam
- 29.9 m
- Year built
- 2004
- Flag state
- Liberia per EU MRV 2025
- Builder
- Meyer Wismar
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EEXI (17.12 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-03-26
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 90.1% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 15.1% and CO₂ per nautical mile rose 34.9%.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
- 1,997 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.11 t
- Under EU ETS
- 1,006 t, 51% of total
Laden voyages2025
- CO₂ on laden voyages
- 1,913 t, 97% of total
- Fuel, laden
- 614 t
- CO₂ per nm, laden
- 468.6 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | DNV | Germany |
| 2022 | Bureau Veritas Certification France | France |
| 2024 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. 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 8 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.