Container ship · Denmark flag · built 2014

MAREN MAERSK

IMO 9632129 EU ETS8 reporting years

CO₂ reported 2025: 53,967 t
Fuel burned: 17,321 t
Distance: 56,982 nm
Time at sea: 3,676 h
Emitted at berth: 2% of total
Share of year under way: 42%
Gross tonnage: 182,000

MAREN MAERSK — kees torn, CC BY-SA 2.0 · File

Vessel particulars

IMO number: 9632129
Ship type: Container ship
Gross tonnage: 182,000
Length overall: 399.0 m
Year built: 2014
Flag state: Denmark
Builder: Hanwha Ocean
Port of registry: Ringkobing
Technical efficiency (design): EEXI (6.77 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: 2026-03-28
Compliance document expires: 2027-06-30

Flag state is derived from the reported port of registry, not reported directly, and reflects the registry at the time of reporting.

Efficiency against its own type2025

Position 130 of 1,838 qualifying container ships by EEOI, at the 7th percentile. The dashed line is the type median, 14.2; this vessel reported 6.6.

EEOI divides emissions by transport work, which for this vessel and year was 8,176,769,697 tonn-nmover 56,982 nautical miles.

Reported CO₂ by year

Between 2018 and 2025 reported CO₂ fell by 11.2%.

From 2024 to 2025, emissions fell 21.9% while distance sailed fell 10.3%and CO₂ per nautical mile fell 12.9%.

Annual returns2018–2025

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2025	53,967	17,321	56,982	3,676	1,010	947.1	6.6	7
2024	69,100	22,177	63,532	3,837	713	1,087.6	6.3	6
2023	41,724	13,367	41,968	2,824	1,456	994.2	5.7	2
2022	43,414	13,594	46,028	3,191	1,800	943.2	5.4	1
2021	48,287	15,470	50,533	3,294	1,712	955.6	5.3	1
2020	49,077	15,981	48,320	2,947	1,484	1,015.7	5.9	4
2019	40,679	13,063	42,374	2,691	873	960.0	6.1	3
2018	60,744	19,407	56,635	3,293	1,575	1,072.5	7.8	8

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 54,817 t
Methane (CH₄): 0.87 t
Nitrous oxide (N₂O): 3.12 t
Under EU ETS: 30,004 t, 56% of total

Laden voyages2025

CO₂ on laden voyages: 52,956 t, 98% of total
Fuel, laden: 17,001 t
CO₂ per nm, laden: 929.4 kg

The share carried on laden voyages separates productive sailing from ballast legs. For tankers, bulkers and ro-ro vessels that split is the operational question; a low laden share means the ship spent much of the year moving empty.

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.

What this page is built on

Reporting years: 8
Ranked by efficiency: yes
Vessel particulars: 5 of 5
Movement data: not observed
Name history: none recorded
Photograph: yes
Sanctions record: none
Inspection record: none in US waters

Caveats that apply to every vessel page

EEOI above 100,000 is withheld. Those values come from returns where reported transport work is near zero, which makes the ratio meaningless rather than extreme. Median across the dataset is around 12.

Emission categories overlap. In the MRV return, emissions at berth are also counted inside the voyage legs, so the categories do not sum to the total. They are shown side by side rather than stacked for that reason.

Distance is derived, intensity is reported. The MRV return publishes CO₂ per nautical mile but not the distance itself, which is null in all 106,564 rows of the source. The distance column is therefore filled from the ranking step, which reconstructs it, and is blank for years where a vessel was not ranked. That is why a row can show an intensity without a distance.

Percentile is within type and year. It is the vessel's position among qualifying ships of the same type that year, where lower is more efficient. A blank means the vessel did not qualify for ranking that year.

Sister ships share a builder, a type and a build year within two years of this vessel. That holds hull and machinery roughly constant and leaves operation as the variable, which is why they are listed before nearest-by-tonnage.

Methane and nitrous oxide start in 2024. They were not reported before that period, so earlier years cannot be compared against them.

Technical efficiency is a design figure fixed at construction. A vessel can hold a good index and still emit heavily by sailing fast, waiting at anchor or carrying little.

Inspection records cover United States waters only. An empty record is not evidence of a clean history elsewhere.

Empty means unreported, never zero. Nothing here is modelled, estimated or interpolated. See the methodology.

Something wrong on this page? See corrections. We do not hold the source registers and cannot amend them, but we will fix anything we have got wrong in reproducing them.