Oil tanker · Denmark flag · built 2010
HENRY MAERSK: CO₂ emissions 2020–2025
IMO 9399351 EU ETS6 reporting years
- CO₂ reported 2025
- 9,926 t
- Fuel burned
- 3,155 t
- Distance
- 31,140 nm
- Time at sea
- 2,691 h
- Emitted at berth
- 11% of total
- Share of year under way
- 31%
- Gross tonnage
- 25,710
HENRY MAERSK against its type
Built in 2010, it is the same age as the median oil tanker on this register (build year 2010, 2,896 vessels with a known build year). At 25,710 gross tonnage it is smaller than 87% 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. The returns for 2020–2025 all give Svendborg as port of registry.
Its 9,926 t of CO₂ for 2025 is 25% above the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 318.8 kg CO₂, 21% below the type median of 403.2 kg. It logged 2,691 hours at sea against a median of 2,030 hours for its type that year. 11.2% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 6 years with reported emissions, the highest was 2024 (11,467 t) and the lowest 2020 (2,747 t). Its efficiency percentile within the type went from 11 in 2020 to 86 in 2025 (lower is more efficient). Of the 8 comparable vessels listed below with a 2025 return, 6 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 9,926 | 3,155 | 31,140 | 2,691 | 1,112 | 318.8 | 15.0 | 86 |
| 2024 | 11,467 | 3,645 | 34,845 | 3,098 | 1,643 | 329.1 | 19.7 | 92 |
| 2023 | 11,103 | 3,519 | — | 2,878 | 1,415 | 342.7 | — | — |
| 2022 | 9,329 | 2,955 | 24,986 | 2,375 | 2,182 | 373.4 | 18.8 | 22 |
| 2021 | 9,335 | 2,964 | — | 2,174 | 1,720 | 356.5 | 17.6 | not ranked |
| 2020 | 2,747 | 882 | 8,072 | 633 | 259 | 340.4 | 15.9 | 11 |
Vessel particulars
- IMO number
- 9399351
- Ship type
- Oil tanker
- Gross tonnage
- 25,710
- Length overall
- 180.0 m
- Beam
- 32.0 m
- Year built
- 2010
- Flag state
- Denmark per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Malaysia. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- Svendborg MRV 2025
- Technical efficiency (design)
- EEXI (5.68 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-03-13
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,252 of 1,448 qualifying oil tankers by EEOI, at the 86th percentile. The dashed line is the type median, 7.5; this vessel reported 15.0.
EEOI divides emissions by transport work, which for this vessel and year was 659,972,739 tonne-miles over 31,140 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 261.3% higher than in 2020, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 13.4% while distance sailed fell 10.6%and CO₂ per nautical mile fell 3.1%.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
- 10,081 t
- Methane (CH₄)
- 0.16 t
- Nitrous oxide (N₂O)
- 0.57 t
- Under EU ETS
- 6,432 t, 65% of total
Laden voyages2025
- CO₂ on laden voyages
- 6,054 t, 61% of total
- Fuel, laden
- 1,933 t
- CO₂ per nm, laden
- 282.7 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 2020–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 6 MRV reporting years, an efficiency ranking and 4 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, 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.