General cargo ship · Portugal flag
JSP PORTO: CO₂ emissions 2019–2025
IMO 9570644 EU ETS7 reporting years
- CO₂ reported 2025
- 1,695 t
- Fuel burned
- 540 t
- Time at sea
- 1,582 h
- Emitted at berth
- 1% of total
- Share of year under way
- 18%
JSP PORTO against its type
It is one of 187 general cargo ships here under the Portugal flag, 6.1% of the 3,081 on the register. Its MRV returns name it JSP PORTO for 2019–2024 and MARLON for 2025. The returns for 2019–2024 all give Madeira as port of registry.
Its 1,695 t of CO₂ for 2025 is 40% below the median of 2,820 t among the 2,469 general cargo ships on this register that reported for 2025. Per nautical mile it emitted 119.6 kg CO₂, close to the type median of 122.2 kg. It logged 1,582 hours at sea against a median of 3,044 hours for its type that year. 1.5% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Across 7 years with reported emissions, the highest was 2019 (4,897 t) and the lowest 2023 (1,094 t). Of the 7 comparable vessels listed below with a 2025 return, 3 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 1,695 | 540 | — | 1,582 | 25 | 119.6 | — | — |
| 2024 | 1,914 | 607 | — | 1,113 | 410 | 194.3 | — | — |
| 2023 | 1,094 | 345 | — | 1,089 | 47 | 127.4 | — | — |
| 2022 | 2,050 | 648 | — | 1,866 | 58 | 126.4 | — | — |
| 2021 | 1,466 | 461 | — | 1,178 | 39 | 129.0 | — | — |
| 2020 | 2,865 | 904 | — | 2,586 | 105 | 118.5 | — | — |
| 2019 | 4,897 | 1,559 | 31,647 | 3,753 | 353 | 154.7 | 19.2 | 22 |
Vessel particulars
- IMO number
- 9570644
- Previously reported as
- MARLON
- Ship type
- General cargo ship
- Flag state
- Portugal per EU MRV 2024
- Ice class
- IA
- Technical efficiency (design)
- EEXI (11.4 gCO₂/t·nm)
- Verifier
- EnvService GmbH, Germany
- Accreditation
- D-VS-20809-01-00
- Compliance document issued
- 2026-03-09
- Compliance document expires
- 2027-06-30
Efficiency against its own type2019
Position 83 of 381 qualifying general cargo ships by EEOI, at the 22nd percentile. The dashed line is the type median, 28.8; this vessel reported 19.2.
EEOI divides emissions by transport work, which for this vessel and year was 254,508,316 tonne-miles over 31,647 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 65.4% lower than in 2019, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 11.4% and CO₂ per nautical mile fell 38.5%.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
- 1,722 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.10 t
- Under EU ETS
- 647 t, 38% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2019 | Bureau Veritas Certification France | France |
| 2020 | Swiss Climate EcoCare GmbH | Germany |
| 2025 | EnvService GmbH | 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 2019–2025, published by the European Commission.
This page draws on 7 MRV reporting years, an efficiency ranking, 1 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.