Ro-pax ship · Cyprus flag · built 1992
CALAIS SEAWAYS: CO₂ emissions 2018–2025
IMO 8908466 EU ETS8 reporting years
- CO₂ reported 2025
- 48,647 t
- Fuel burned
- 15,547 t
- Time at sea
- 5,461 h
- Emitted at berth
- 4% of total
- Share of year under way
- 62%
- Gross tonnage
- 28,838
CALAIS SEAWAYS against its type
Built in 1992, it is 8 years older than the median ro-pax ship on this register, which was built in 2000 (483 vessels with a known build year). At 28,838 gross tonnage it is larger than 64% of the other 470 ro-pax ships with a recorded tonnage. It is one of 82 ro-pax ships here under the Cyprus flag, 16.6% of the 493 on the register. The same builder is recorded for 3 other vessels here, one of them a ro-pax ship. DFDS Seaways is linked to 5 vessels on this register. Its MRV returns name it CALAIS SEAWAYS for 2018–2020 and ISLE OF INNISFREE for 2021–2025. The reported port of registry changed: Le Havre (2018–2020), then Limassol (2021–2025).
Its 48,647 t of CO₂ for 2025 is 1.6 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 574.4 kg CO₂, 23% above the type median of 467.6 kg. It logged 5,461 hours at sea against a median of 4,243 hours for its type that year. 4.0% 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 (48,647 t) and the lowest 2021 (19,838 t). Of the 8 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 | 48,647 | 15,547 | — | 5,461 | 1,950 | 574.4 | — | — |
| 2024 | 43,428 | 13,808 | — | 5,279 | 1,586 | 567.6 | — | — |
| 2023 | 44,068 | 13,941 | — | 5,223 | 1,907 | 606.4 | — | — |
| 2022 | 45,094 | 14,128 | — | 5,273 | 2,210 | 602.0 | — | — |
| 2021 | 19,838 | 6,316 | — | 3,319 | 7,407 | 426.9 | — | — |
| 2020 | 28,897 | 9,226 | — | 3,218 | 2,855 | 651.3 | — | — |
| 2019 | 44,150 | 14,095 | — | 5,341 | 3,420 | 589.8 | — | — |
| 2018 | 42,426 | 13,550 | 74,027 | 5,274 | 3,042 | 573.1 | 400.9 | 65 |
Vessel particulars
- IMO number
- 8908466
- Previously reported as
- ISLE OF INNISFREE
- Ship type
- Ro-pax ship
- Gross tonnage
- 28,838
- Length overall
- 162.0 m
- Year built
- 1992
- Flag state
- Cyprus per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list France. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Boelwerf
- Port of registry
- Limassol MRV 2025
- Technical efficiency (design)
- EEXI (30.76 gCO₂/t·nm)
- Operator
- DFDS Seaways
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-01
- Compliance document expires
- 2027-06-30
Efficiency against its own type2018
Position 12 of 18 qualifying ro-pax ships by EEOI, at the 65th percentile. The dashed line is the type median, 335.9; this vessel reported 400.9.
Across the 3 ranked vessels operated by DFDS Seaways, the median percentile is 65. This vessel is less efficient than its own fleet median.
EEOI divides emissions by transport work, which for this vessel and year was 14,952,625 passenger-miles over 74,027 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 14.7% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 12.0% and CO₂ per nautical mile rose 1.2%.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
- 49,411 t
- Methane (CH₄)
- 0.78 t
- Nitrous oxide (N₂O)
- 2.80 t
- Under EU ETS
- 25,318 t, 52% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | VERIFAVIA (UK) LTD | United Kingdom |
| 2020 | NORMEC VERIFAVIA SAS | France |
| 2021 | DNV | 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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 8 MRV reporting years, an efficiency ranking, 5 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.