Ro-pax ship · Panama flag · built 1971
BOHUS: CO₂ emissions 2018–2025
IMO 7037806 EU ETS8 reporting years
- CO₂ reported 2025
- 4,058 t
- Fuel burned
- 1,266 t
- Time at sea
- 1,472 h
- Emitted at berth
- 10% of total
- Share of year under way
- 17%
- Gross tonnage
- 9,149
BOHUS against its type
Built in 1971, it is 29 years older than the median ro-pax ship on this register, which was built in 2000 (483 vessels with a known build year). At 9,149 gross tonnage it is smaller than 79% of the other 470 ro-pax ships with a recorded tonnage. It is one of 13 ro-pax ships here under the Panama flag, 2.6% of the 493 on the register. The same builder is recorded for 10 other vessels here, 3 of them ro-pax ships. StarLines is linked to 2 vessels on this register. Its MRV returns name it BOHUS for 2018 and IONIAN STAR for 2019–2025. The returns for 2021–2025 all give PANAMA as port of registry.
Its 4,058 t of CO₂ for 2025 is 87% below the median of 30,062 t among the 417 ro-pax ships on this register that reported for 2025. Per nautical mile it emitted 220.0 kg CO₂, 53% below the type median of 467.6 kg. It logged 1,472 hours at sea against a median of 4,243 hours for its type that year. 9.8% of its 2025 emissions were at berth; the median for ro-pax ships was 6.7%. Across 8 years with reported emissions, the highest was 2018 (16,751 t) and the lowest 2025 (4,058 t). Of the 4 comparable vessels listed below with a 2025 return, 0 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 | 4,058 | 1,266 | — | 1,472 | 397 | 220.0 | — | — |
| 2024 | 4,843 | 1,511 | — | 1,831 | 440 | 215.7 | — | — |
| 2023 | 8,830 | 2,754 | — | 2,992 | 1,426 | 243.2 | — | — |
| 2022 | 8,044 | 2,509 | — | 2,207 | 866 | 272.4 | — | — |
| 2021 | 6,098 | 1,902 | — | 1,771 | 657 | 263.0 | — | — |
| 2020 | 4,948 | 1,543 | — | 995 | 1,235 | 333.2 | — | — |
| 2019 | 11,118 | 3,468 | — | 2,224 | 1,336 | 347.6 | — | — |
| 2018 | 16,751 | 5,225 | — | 3,754 | 2,128 | 336.4 | — | — |
Vessel particulars
- IMO number
- 7037806
- Previously reported as
- IONIAN STAR
- Ship type
- Ro-pax ship
- Gross tonnage
- 9,149
- Length overall
- 123.4 m
- Year built
- 1971
- Flag state
- Panama per EU MRV 2025
- Builder
- Aalborg Shipyard
- Port of registry
- Panama MRV 2025
- Ice class
- IC
- Technical efficiency (design)
- EIV (19 gCO₂/t·nm)
- Operator
- StarLines, StarLines
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-26
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 75.8% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 16.2% and CO₂ per nautical mile rose 2.0%.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
- 4,120 t
- Methane (CH₄)
- 0.06 t
- Nitrous oxide (N₂O)
- 0.23 t
- Under EU ETS
- 2,228 t, 55% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | DNV | Germany |
| 2019 | VERIFAVIA (UK) LTD | United Kingdom |
| 2020 | 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, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, 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.