Navalyze · Container · Ship

ONE OWL

IMO: 9741449
Type: Container ship
Average cargo carried: 114,438 t
Flag (estimated): Japan
Port of registry: Tokyo
Technical efficiency: EEDI 6.00 g CO₂/t·nm
Former names: NYK OWL

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 115,476 t of cargo on average.

Fuel kg/nm

236

Container median 186 kg/nm (+27%)

CO₂ per transport work (cargo)

6.38

g CO₂/t·nm · Container median 17.9 (−64%)

Average speed

13.9 kn

Container median 14.1 kn (−1%)

Fuel per day at sea

78.5 t/day

Fuel consumed

4,234 t

CO₂ emitted

13,241 t

Distance sailed

17,973 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,294 h

54 days, 15% of the year

Within the container fleet, 2022

Set against all 1,825 container ships with a full-year 2022 report. Bigger ships burn more per mile but less per tonne of cargo, so read fuel per mile with the ship's size in mind.

Fuel kg/nmThis ship 247 kg/nm · median 178 (+39%)

77.9Ranks 1,281 of 1,825, lowest first314

Average speedThis ship 11.4 kn · median 13.6 (−16%)

10.1Faster than 20% of container ships16.1

CO₂ per transport work (cargo)This ship 6.78 g CO₂/t·nm · median 19.1 (−65%)

7.44Ranks 115 of 1,825, lowest first52.6

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2021

THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.

Between EU ports1%
From the EU23%
Into the EU73%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

458 t

3.5% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

Over the years

Full-year reports only. The Container median is the middle ship of all container ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

ONE OWL
Container median

160.0180.0200.0220.0240.0260.0

’182018’192019’202020’212021’222022

Average speed, kn

ONE OWL
Container median

10.012.014.016.018.0

’182018’192019’202020’212021’222022

CO₂ per transport work (cargo), g CO₂/t·nm

ONE OWL
Container median

5.010.015.020.025.0

’182018’192019’202020’212021’222022

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2021→2022	−2.5 kn	+5%	−14%	−52%	+6%	2.5 kn slower, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.8 kn	+11%	+5%	−54%	+9%	0.8 kn slower, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.1 kn	+8%	+7%	−42%	−8%	Same speed, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−1.4 kn	−16%	−23%	+101%	−14%	1.4 kn slower, fuel per mile down 16%; in line with the speed change.

Fuel per mile rises roughly with the square of speed for a given ship, so a change in speed explains much of a change in fuel per mile.

Every reporting year

One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.

Operation

Year	ISM company	Fuel t	CO₂ t	Distance nm	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2022	not published	2,118	6,663	8,588	756	11.4	247	6.78	–
2021	not published	4,234	13,241	17,973	1,294	13.9	236	6.38	–
2020	not published	8,309	26,217	38,974	2,656	14.7	213	5.83	–
2019	not published	13,380	41,714	67,593	4,556	14.8	198	6.33	–
2018	not published	7,954	24,813	33,665	2,076	16.2	236	7.35	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2022	not published	6.78	19.1	−65%	115 of 1,825	ClassNK	C
2021	not published	6.38	17.9	−64%	93 of 1,781	ClassNK	C
2020	not published	5.83	17.6	−67%	47 of 1,797	ClassNK	C
2019	not published	6.33	18.9	−66%	57 of 1,788	ClassNK	C
2018	not published	7.35	20.2	−64%	85 of 1,705	ClassNK	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Container ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's container ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.