Other ship types · Nauru flag · built 1997
CEMBAY: CO₂ emissions 2018–2025
IMO 9146120 EU ETS4 reporting years
- CO₂ reported 2025
- 9,933 t
- Fuel burned
- 3,173 t
- Distance
- 61,248 nm
- Time at sea
- 6,087 h
- Emitted at berth
- 6% of total
- Share of year under way
- 69%
- Gross tonnage
- 7,030
CEMBAY against its type
Built in 1997, it is 12 years older than the median vessel in the other ship types category on this register, which was built in 2009 (451 vessels with a known build year). At 7,030 gross tonnage it is smaller than 72% of the other 436 vessels in the other ship types category with a recorded tonnage. It is the only vessel in the other ship types category on this register under the Nauru flag. The same builder is recorded for 307 other vessels here, 10 of them vessels in the other ship types category. Its MRV returns name it CEMBAY for 2018–2020 and MUMBAI for 2024–2025. The reported port of registry changed: Nassau (2020), then Nauru (2024–2025).
Its 9,933 t of CO₂ for 2025 is 1.9 times the median of 5,122 t among the 335 vessels in the other ship types category on this register that reported for 2025. Per nautical mile it emitted 162.2 kg CO₂, 30% below the type median of 231.1 kg. It logged 6,087 hours at sea against a median of 2,231 hours for its type that year. 5.6% of its 2025 emissions were at berth; the median for vessels in the other ship types category was 3.9%. Across 4 years with reported emissions, the highest was 2025 (9,933 t) and the lowest 2020 (4,380 t). Its efficiency percentile within the type went from 100 in 2018 to 11 in 2025 (lower is more efficient). Of the 4 comparable vessels listed below with a 2025 return, 1 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 | 9,933 | 3,173 | 61,248 | 6,087 | 559 | 162.2 | 29.9 | 11 |
| 2024 | 7,855 | 2,485 | 52,236 | 5,029 | 508 | 150.4 | 25.9 | 26 |
| 2020 | 4,380 | 1,395 | 30,909 | 3,461 | 167 | 141.7 | 31.4 | 100 |
| 2018 | 7,214 | 2,274 | 38,507 | 6,869 | 1,039 | 187.3 | 50.8 | 100 |
Vessel particulars
- IMO number
- 9146120
- Previously reported as
- MUMBAI
- Ship type
- Other ship types
- Gross tonnage
- 7,030
- Length overall
- 129.5 m
- Year built
- 1997
- Flag state
- Nauru per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Bahamas. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Shin Kurushima Dockyard
- Port of registry
- Nauru MRV 2025
- Technical efficiency (design)
- EIV (10.46 gCO₂/t·nm)
- Verifier
- RINA HELLAS LTD, Greece
- Accreditation
- 1325
- Compliance document issued
- 2026-05-18
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 14 of 119 qualifying other ship typess by EEOI, at the 11th percentile. The dashed line is the type median, 69.3; this vessel reported 29.9.
EEOI divides emissions by transport work, which for this vessel and year was 332,080,241 tonne-miles over 61,248 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 37.7% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2021, 2022, 2023, so the series has gaps.
From 2024 to 2025, emissions rose 26.4% while distance sailed rose 17.3%and CO₂ per nautical mile rose 7.8%.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
- 10,088 t
- Methane (CH₄)
- 0.16 t
- Nitrous oxide (N₂O)
- 0.57 t
- Under EU ETS
- 5,246 t, 53% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | VERIFAVIA (UK) LTD | United Kingdom |
| 2020 | NORMEC VERIFAVIA SAS | France |
| 2024 | 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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 4 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.