Passenger ship (Cruise Passenger ship) · Bahamas flag · built 1995
MARELLA DISCOVERY 2: CO₂ emissions 2018–2025
IMO 9070620 EU ETS7 reporting years
- CO₂ reported 2025
- 56,041 t
- Fuel burned
- 17,905 t
- Time at sea
- 4,697 h
- Emitted at berth
- 18% of total
- Share of year under way
- 54%
- Gross tonnage
- 69,472
MARELLA DISCOVERY 2 against its type
Built in 1995, it is 15 years older than the median cruise ship on this register, which was built in 2010 (195 vessels with a known build year). At 69,472 gross tonnage it is smaller than 54% of the other 177 cruise ships with a recorded tonnage. It is one of 67 cruise ships here under the Bahamas flag, 33.2% of the 202 on the register. The same builder is recorded for 51 other vessels here, 35 of them cruise ships. TUI Cruises is linked to 11 vessels on this register. The returns for 2018–2025 all give Nassau as port of registry.
Its 56,041 t of CO₂ for 2025 is 1.8 times the median of 31,269 t among the 200 cruise ships on this register that reported for 2025. Per nautical mile it emitted 881.1 kg CO₂, close to the type median of 821.3 kg. It logged 4,697 hours at sea against a median of 3,133 hours for its type that year. 18.0% of its 2025 emissions were at berth; the median for cruise ships was 15.1%. Across 7 years with reported emissions, the highest was 2025 (56,041 t) and the lowest 2020 (8,294 t). The one sister ship listed below with a 2025 return reported a higher or equal CO₂ per nautical mile.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 56,041 | 17,905 | — | 4,697 | 10,097 | 881.1 | — | — |
| 2024 | 35,923 | 11,407 | — | 2,975 | 8,769 | 933.4 | — | — |
| 2023 | 42,197 | 13,408 | — | 2,890 | 6,297 | 879.2 | — | — |
| 2022 | 37,336 | 11,915 | — | 2,814 | 6,108 | 856.1 | — | — |
| 2020 | 8,294 | 2,628 | — | 471 | 3,721 | 1,397.9 | — | — |
| 2019 | 49,174 | 15,701 | — | 3,069 | 7,722 | 1,157.6 | — | — |
| 2018 | 42,418 | 13,537 | — | 2,813 | 9,457 | 1,055.5 | — | — |
Vessel particulars
- IMO number
- 9070620
- Gross tonnage
- 69,472
- Length overall
- 264.3 m
- Beam
- 32.0 m
- Year built
- 1995
- Flag state
- Bahamas per EU MRV 2025
- Builder
- Chantiers de l'Atlantique
- Port of registry
- Nassau MRV 2025
- Home port
- Nassau
- Technical efficiency (design)
- EEDI (12.01 gCO₂/t·nm)
- Operator
- TUI Cruises, Marella Cruises
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-04-08
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 32.1% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2021, so the series has gaps.
From 2024 to 2025, emissions rose 56.0% and CO₂ per nautical mile fell 5.6%.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
- 56,920 t
- Methane (CH₄)
- 0.90 t
- Nitrous oxide (N₂O)
- 3.22 t
- Under EU ETS
- 40,104 t, 72% of total
Laden voyages2025
- CO₂ on laden voyages
- 45,358 t, 81% of total
- Fuel, laden
- 14,502 t
- CO₂ per nm, laden
- 722.1 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
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 7 MRV reporting years, 5 of 5 vessel particulars and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, a name history, 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.