General cargo ship · Panama flag · built 2006
CALM BAY: CO₂ emissions 2018–2025
IMO 9317705 EU ETS7 reporting years
- CO₂ reported 2025
- 716 t
- Fuel burned
- 226 t
- Distance
- 2,911 nm
- Time at sea
- 319 h
- Emitted at berth
- 1% of total
- Share of year under way
- 4%
- Gross tonnage
- 22,698
CALM BAY against its type
Built in 2006, it is 1 year older than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 22,698 gross tonnage it is larger than 85% of the other 2,665 general cargo ships with a recorded tonnage. It is one of 310 general cargo ships here under the Panama flag, 10.1% of the 3,081 on the register. Its MRV returns name it CALM BAY for 2018–2019 and SIROCO for 2021–2025. The reported port of registry changed: Douglas (2018–2019), then Panama (2021–2025).
Its 716 t of CO₂ for 2025 is 75% below the median of 2,820 t among the 2,469 general cargo ships on this register that reported for 2025. Per nautical mile it emitted 246.0 kg CO₂, 2.0 times the type median of 122.2 kg. It logged 319 hours at sea against a median of 3,044 hours for its type that year. 1.1% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Across 7 years with reported emissions, the highest was 2018 (5,636 t) and the lowest 2025 (716 t). Its efficiency percentile within the type went from 14 in 2021 to 2 in 2025 (lower is more efficient). Of the 7 comparable vessels listed below with a 2025 return, 6 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 | 716 | 226 | 2,911 | 319 | 8 | 246.0 | 8.4 | 2 |
| 2024 | 2,795 | 885 | 12,409 | 1,621 | 100 | 225.2 | 11.0 | 12 |
| 2023 | 4,696 | 1,485 | 18,499 | 1,909 | 95 | 253.8 | 24.0 | 59 |
| 2022 | 4,538 | 1,438 | 16,282 | 1,422 | 220 | 278.7 | 18.6 | 33 |
| 2021 | 4,619 | 1,462 | 17,537 | 1,528 | 203 | 263.4 | 12.6 | 14 |
| 2019 | 1,745 | 555 | — | 538 | 147 | 326.2 | — | — |
| 2018 | 5,636 | 1,795 | — | 2,475 | 110 | 260.2 | — | — |
Vessel particulars
- IMO number
- 9317705
- Previously reported as
- SIROCO
- Ship type
- General cargo ship
- Gross tonnage
- 22,698
- Length overall
- 177.8 m
- Beam
- 28.7 m
- Year built
- 2006
- Flag state
- Panama per EU MRV 2025
- Port of registry
- Panama MRV 2025
- Technical efficiency (design)
- EEXI (6.09 gCO₂/t·nm)
- Verifier
- ICS Verification Services Single Member P.C., Greece
- Accreditation
- 1101-3
- Compliance document issued
- 2026-03-09
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 8 of 479 qualifying general cargo ships by EEOI, at the 2nd percentile. The dashed line is the type median, 29.4; this vessel reported 8.4.
EEOI divides emissions by transport work, which for this vessel and year was 84,860,190 tonne-miles over 2,911 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 87.3% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2020, so the series has gaps.
From 2024 to 2025, emissions fell 74.4% while distance sailed fell 76.5%and CO₂ per nautical mile rose 9.2%.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
- 727 t
- Methane (CH₄)
- 0.01 t
- Nitrous oxide (N₂O)
- 0.04 t
- Under EU ETS
- 362 t, 51% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2021 | EMICERT | Greece |
| 2024 | ICS Verification Services Single Member P.C. | 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).
This page draws on 7 MRV reporting years, an efficiency ranking, 4 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.