Bulk carrier · Liberia flag · built 2010
CALLISTO: CO₂ emissions 2018–2025
IMO 9427392 6 reporting years
- CO₂ reported 2022
- 140 t
- Fuel burned
- 44 t
- Time at sea
- 61 h
- Emitted at berth
- 31% of total
- Share of year under way
- 1%
- Gross tonnage
- 15,861
CALLISTO against its type
Built in 2010, it is 2 years older than the median bulk carrier on this register, which was built in 2012 (6,882 vessels with a known build year). At 15,861 gross tonnage it is smaller than 97% of the other 6,571 bulk carriers with a recorded tonnage. It is one of 1,589 bulk carriers here under the Liberia flag, 19.5% of the 8,138 on the register. The same builder is recorded for 12 other vessels here, 7 of them bulk carriers. Its MRV returns name it CALLISTO for 2018–2019 and MALLARD S for 2020–2025. The returns for 2018–2025 all give MONROVIA as port of registry.
Its 140 t of CO₂ for 2022 is 96% below the median of 3,908 t among the 3,902 bulk carriers on this register that reported for 2022. Per nautical mile it emitted 327.9 kg CO₂, 14% above the type median of 288.1 kg. It logged 61 hours at sea against a median of 1,254 hours for its type that year. 30.8% of its 2022 emissions were at berth; the median for bulk carriers was 4.2%. Across 5 years with reported emissions, the highest was 2020 (3,920 t) and the lowest 2022 (140 t). Its efficiency percentile within the type went from 89 in 2018 to 72 in 2021 (lower is more efficient). The one comparable vessel listed below with a 2022 return reported a lower CO₂ per nautical mile.
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2022 | 140 | 44 | — | 61 | 43 | 327.9 | 34.7 | not ranked |
| 2021 | 3,352 | 1,068 | 20,584 | 2,178 | 162 | 162.8 | 10.3 | 72 |
| 2020 | 3,920 | 1,253 | 18,988 | 2,016 | 144 | 206.4 | 16.1 | 95 |
| 2019 | 3,476 | 1,111 | 15,454 | 1,744 | 38 | 224.9 | 14.5 | 92 |
| 2018 | 2,670 | 852 | 9,415 | 1,202 | 205 | 283.6 | 13.5 | 89 |
Vessel particulars
- IMO number
- 9427392
- Previously reported as
- MALLARD S
- Ship type
- Bulk carrier
- Gross tonnage
- 15,861
- Length overall
- 157.2 m
- Beam
- 26.8 m
- Year built
- 2010
- Flag state
- Liberia per EU MRV 2025
- Builder
- Yamanishi Zosen
- Port of registry
- MONROVIA MRV 2022
- Technical efficiency (design)
- EEXI (7.64 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: distance below the floor (2022)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2023-06-01
- Compliance document expires
- 2024-06-30
Reported CO₂ by year
Reported CO₂ in 2022 was 94.7% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2023, 2024, so the series has gaps.
From 2021 to 2022, emissions fell 95.8% and CO₂ per nautical mile rose 101.3%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2022 emissions occurred
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | RINA Services Spa | Italy |
| 2020 | 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).
This page draws on 6 MRV reporting years, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: an efficiency ranking, 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.