Container ship · Japan flag

NYK OWL

IMO 9741449 5 reporting years

CO₂ reported 2022: 6,663 t
Fuel burned: 2,118 t
Distance: 8,588 nm
Time at sea: 756 h
Emitted at berth: 8% of total
Share of year under way: 9%

Vessel particulars

IMO number: 9741449
Previously reported as: ONE OWL
Ship type: Container ship
Flag state: Japan
Port of registry: TOKYO
Technical efficiency (design): EEDI (6 gCO₂/t·nm)
Verifier: Nippon Kaiji Kyokai, Japan
Accreditation: VS-21325-01
Compliance document issued: 2023-04-05
Compliance document expires: 2024-06-30

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 type2022

Position 117 of 1,589 qualifying container ships by EEOI, at the 7th percentile. The dashed line is the type median, 16.9; this vessel reported 6.8.

EEOI divides emissions by transport work, which for this vessel and year was 982,793,510 tonn-nmover 8,588 nautical miles.

Reported CO₂ by year

Between 2018 and 2022 reported CO₂ fell by 73.1%.

From 2021 to 2022, emissions fell 49.7% while distance sailed fell 52.2%and CO₂ per nautical mile rose 5.3%.That points mainly to how much the vessel sailed, rather than the other.

Annual returns2018–2022

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2022	6,663	2,118	8,588	756	566	775.9	6.8	7
2021	13,241	4,234	17,973	1,294	458	736.7	6.4	6
2020	26,217	8,309	38,974	2,656	979	672.7	5.8	3
2019	41,714	13,380	67,593	4,556	1,624	617.1	6.3	4
2018	24,813	7,954	33,665	2,076	2,140	737.0	7.3	6

Where the 2022 emissions occurred

Sources and how to read this

Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2022, published by the European Commission.

What this page is built on

Reporting years: 5
Ranked by efficiency: yes
Vessel particulars: 1 of 5
Movement data: not observed
Name history: yes
Photograph: none licensed
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.