General cargo ship · Portugal flag · built 2011
BOCS BREMEN: CO₂ emissions 2020–2025
IMO 9438389 EU ETS5 reporting years
- CO₂ reported 2025
- 8,292 t
- Fuel burned
- 2,657 t
- Distance
- 27,709 nm
- Time at sea
- 2,322 h
- Emitted at berth
- 6% of total
- Share of year under way
- 27%
- Gross tonnage
- 22,998
BOCS BREMEN against its type
Built in 2011, it is 4 years newer than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 22,998 gross tonnage it is larger than 87% of the other 2,665 general cargo ships with a recorded tonnage. 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 PORTHOS for 2020 and BOCS BREMEN for 2022–2025. The reported port of registry changed: Panama (2020), then Madeira (2022–2025).
Its 8,292 t of CO₂ for 2025 is 2.9 times 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 299.2 kg CO₂, 2.4 times the type median of 122.2 kg. It logged 2,322 hours at sea against a median of 3,044 hours for its type that year. 6.3% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Across 5 years with reported emissions, the highest was 2023 (11,649 t) and the lowest 2020 (1,017 t). Its efficiency percentile within the type went from 79 in 2020 to 21 in 2025 (lower is more efficient). Of the 4 comparable vessels listed below with a 2025 return, 4 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 8,292 | 2,657 | 27,709 | 2,322 | 519 | 299.2 | 20.8 | 21 |
| 2024 | 10,031 | 3,189 | 36,187 | 2,971 | 658 | 277.2 | 20.6 | 38 |
| 2023 | 11,649 | 3,686 | 43,854 | 3,550 | 661 | 265.6 | 16.4 | 34 |
| 2022 | 2,968 | 939 | 10,841 | 872 | 232 | 273.8 | 11.6 | 14 |
| 2020 | 1,017 | 322 | 3,088 | 235 | 166 | 329.5 | 35.4 | 79 |
Vessel particulars
- IMO number
- 9438389
- Previously reported as
- PORTHOS
- Ship type
- General cargo ship
- Gross tonnage
- 22,998
- Length overall
- 182.9 m
- Beam
- 28.4 m
- Year built
- 2011
- Flag state
- Portugal per EU MRV 2025
- Port of registry
- Madeira MRV 2025
- Technical efficiency (design)
- EEXI (7.84 gCO₂/t·nm)
- Verifier
- RINA HELLAS LTD, Greece
- Accreditation
- 1325
- Compliance document issued
- 2026-03-06
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 100 of 479 qualifying general cargo ships by EEOI, at the 21st percentile. The dashed line is the type median, 29.4; this vessel reported 20.8.
EEOI divides emissions by transport work, which for this vessel and year was 398,262,728 tonne-miles over 27,709 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 715.1% higher than in 2020, for EU/EEA voyages only. No return is recorded for 2021, so the series has gaps.
From 2024 to 2025, emissions fell 17.3% while distance sailed fell 23.4%and CO₂ per nautical mile rose 8.0%.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
- 8,422 t
- Methane (CH₄)
- 0.13 t
- Nitrous oxide (N₂O)
- 0.48 t
- Under EU ETS
- 4,956 t, 60% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2020 | ICS Verification Services Single Member P.C. | Greece |
| 2022 | EnvService GmbH | Germany |
| 2025 | RINA HELLAS 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 2020–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 5 MRV reporting years, an efficiency ranking, 4 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.