Ro-pax ship · Greece flag · built 2007
BLUE STAR CHIOS: CO₂ emissions 2018–2025
IMO 9215555 EU ETS8 reporting years
- CO₂ reported 2025
- 69,749 t
- Fuel burned
- 21,967 t
- Time at sea
- 5,844 h
- Emitted at berth
- 3% of total
- Share of year under way
- 67%
- Gross tonnage
- 8,126
BLUE STAR CHIOS against its type
Built in 2007, it is 7 years newer than the median ro-pax ship on this register, which was built in 2000 (483 vessels with a known build year). At 8,126 gross tonnage it is smaller than 81% of the other 470 ro-pax ships with a recorded tonnage. It is one of 48 ro-pax ships here under the Greece flag, 9.7% of the 493 on the register. The same builder is recorded for 1 other vessel here. Blue Star Ferries is linked to 2 vessels on this register. Its MRV returns name it NISSOS CHIOS for 2018 and BLUE STAR CHIOS for 2019–2025. The returns for 2018–2025 all give Piraeus as port of registry.
Its 69,749 t of CO₂ for 2025 is 2.3 times the median of 30,062 t among the 417 ro-pax ships on this register that reported for 2025. Per nautical mile it emitted 559.4 kg CO₂, 20% above the type median of 467.6 kg. It logged 5,844 hours at sea against a median of 4,243 hours for its type that year. 2.7% 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 2025 (69,749 t) and the lowest 2022 (47,108 t). Of the 5 comparable vessels 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 | 69,749 | 21,967 | — | 5,844 | 1,884 | 559.4 | — | — |
| 2024 | 65,026 | 20,865 | — | 5,339 | 2,528 | 569.1 | — | — |
| 2023 | 58,557 | 18,787 | — | 4,755 | 3,166 | 564.1 | — | — |
| 2022 | 47,108 | 15,124 | — | 3,718 | 1,670 | 607.0 | — | — |
| 2021 | 47,638 | 15,294 | — | 4,814 | 149,096 | 481.8 | — | — |
| 2020 | 60,939 | 19,562 | — | 5,156 | 1,412 | 567.9 | — | — |
| 2019 | 62,242 | 19,747 | — | 4,797 | 7,943 | 604.3 | — | — |
| 2018 | 53,848 | 17,085 | — | 2,117 | 3,597 | 1,152.8 | — | — |
Vessel particulars
- IMO number
- 9215555
- Previously reported as
- NISSOS CHIOS
- Ship type
- Ro-pax ship
- Gross tonnage
- 8,126
- Length overall
- 141.0 m
- Beam
- 21.0 m
- Year built
- 2007
- Flag state
- Greece per EU MRV 2025
- Builder
- Eleusis Shipyards
- Port of registry
- Piraeus MRV 2025
- Home port
- Piraeus
- Technical efficiency (design)
- EEXI (35.69 gCO₂/t·nm)
- Operator
- Blue Star Ferries
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-30
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 29.5% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 7.3% and CO₂ per nautical mile fell 1.7%.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
- 70,828 t
- Methane (CH₄)
- 1.10 t
- Nitrous oxide (N₂O)
- 3.95 t
- Under EU ETS
- 5,596 t, 8% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | RINA Services Spa | Italy |
| 2022 | RINA HELLAS LTD | Greece |
| 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, 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.