Oil tanker · Denmark flag · built 2018
MAERSK CALLAO: CO₂ emissions 2018–2025
IMO 9786152 EU ETS6 reporting years
- CO₂ reported 2025
- 2,645 t
- Fuel burned
- 845 t
- Time at sea
- 937 h
- Emitted at berth
- 4% of total
- Share of year under way
- 11%
- Gross tonnage
- 29,816
MAERSK CALLAO against its type
Built in 2018, it is 8 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 29,816 gross tonnage it is smaller than 73% of the other 2,841 oil tankers with a recorded tonnage. It is one of 72 oil tankers here under the Denmark flag, 2.0% of the 3,548 on the register. No other vessel on this register is recorded with the same builder. The reported port of registry changed: Singapore (2018–2019), then Svendborg (2020–2025).
Its 2,645 t of CO₂ for 2025 is 67% below the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 235.4 kg CO₂, 42% below the type median of 403.2 kg. It logged 937 hours at sea against a median of 2,030 hours for its type that year. 4.1% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 6 years with reported emissions, the highest was 2020 (12,301 t) and the lowest 2022 (823 t). Its efficiency percentile within the type went from 37 in 2018 to 28 in 2021 (lower is more efficient). The one comparable vessel 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 | 2,645 | 845 | — | 937 | 109 | 235.4 | 0.2 | not ranked |
| 2022 | 823 | 264 | — | 271 | 55 | 257.1 | 7.3 | not ranked |
| 2021 | 1,287 | 413 | 6,262 | 520 | 35 | 205.6 | 6.2 | 28 |
| 2020 | 12,301 | 3,910 | 44,783 | 3,832 | 2,145 | 274.7 | 11.5 | 68 |
| 2019 | 6,247 | 1,988 | 25,950 | 2,265 | 326 | 240.7 | 15.4 | 83 |
| 2018 | 5,299 | 1,688 | 21,062 | 1,678 | 312 | 251.6 | 7.3 | 37 |
Vessel particulars
- IMO number
- 9786152
- Ship type
- Oil tanker
- Gross tonnage
- 29,816
- Length overall
- 183.2 m
- Year built
- 2018
- Flag state
- Denmark per EU MRV 2025
- Builder
- Samsung Group
- Port of registry
- Svendborg MRV 2025
- Technical efficiency (design)
- EEDI (3.97 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: cargo above the plausible ceiling (2025)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-02-24
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 50.1% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2023, 2024, so the series has gaps.
From 2022 to 2025, emissions rose 221.2% and CO₂ per nautical mile fell 8.4%.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
- 2,687 t
- Methane (CH₄)
- 0.04 t
- Nitrous oxide (N₂O)
- 0.15 t
- Under EU ETS
- 1,478 t, 56% of total
Laden voyages2025
- CO₂ on laden voyages
- 2,536 t, 96% of total
- Fuel, laden
- 811 t
- CO₂ per nm, laden
- 247.9 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 6 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.