Bulk carrier · Panama flag
GREAT ZHOU: CO₂ emissions 2021–2025
IMO 9766932 EU ETS5 reporting years
- CO₂ reported 2025
- 2,442 t
- Fuel burned
- 774 t
- Distance
- 9,684 nm
- Time at sea
- 884 h
- Emitted at berth
- 3% of total
- Share of year under way
- 10%
GREAT ZHOU against its type
It is one of 1,601 bulk carriers here under the Panama flag, 19.7% of the 8,138 on the register. Its MRV returns name it MARITIME CHALLENGER for 2021 and GREAT ZHOU for 2022–2025. The reported port of registry changed: Singapore (2021), then Panama (2022–2025).
Its 2,442 t of CO₂ for 2025 is 25% below the median of 3,239 t among the 3,731 bulk carriers on this register that reported for 2025. Per nautical mile it emitted 252.2 kg CO₂, close to the type median of 260.7 kg. It logged 884 hours at sea against a median of 1,200 hours for its type that year. 2.8% of its 2025 emissions were at berth; the median for bulk carriers was 3.7%. Across 5 years with reported emissions, the highest was 2024 (12,218 t) and the lowest 2022 (1,399 t). Its efficiency percentile within the type went from 8 in 2022 to 48 in 2025 (lower is more efficient). Of the 4 comparable vessels listed below with a 2025 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2021–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 2,442 | 774 | 9,684 | 884 | 68 | 252.2 | 7.4 | 48 |
| 2024 | 12,218 | 3,920 | 40,410 | 3,611 | 279 | 302.4 | 7.6 | 45 |
| 2023 | 8,513 | 2,729 | 34,162 | 2,847 | 178 | 249.2 | 24.8 | 99 |
| 2022 | 1,399 | 449 | 5,260 | 426 | 0 | 265.9 | 4.7 | 8 |
| 2021 | 2,910 | 933 | — | 1,028 | 100 | 232.0 | — | — |
Vessel particulars
- IMO number
- 9766932
- Previously reported as
- MARITIME CHALLENGER
- Ship type
- Bulk carrier
- Flag state
- Panama per EU MRV 2025
- Port of registry
- Panama MRV 2025
- Home port
- Panama
- Technical efficiency (design)
- EEDI (3.54 gCO₂/t·nm)
- Verifier
- CHINA CLASSIFICATION SOCIETY, China
- Accreditation
- 0003VV
- Compliance document issued
- 2026-03-24
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,555 of 3,241 qualifying bulk carriers by EEOI, at the 48th percentile. The dashed line is the type median, 7.6; this vessel reported 7.4.
EEOI divides emissions by transport work, which for this vessel and year was 328,644,684 tonne-miles over 9,684 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 16.1% lower than in 2021, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 80.0% while distance sailed fell 76.0%and CO₂ per nautical mile fell 16.6%.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
- 2,480 t
- Methane (CH₄)
- 0.04 t
- Nitrous oxide (N₂O)
- 0.14 t
- Under EU ETS
- 1,298 t, 53% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2021 | HELLENIC LLOYD'S S.A. | Greece |
| 2022 | CHINA CLASSIFICATION SOCIETY | China |
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 2021–2025, published by the European Commission.
This page draws on 5 MRV reporting years, an efficiency ranking, 1 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, a licensed photograph, 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.