Navalyze · Container · Ship

ONE BLUE JAY

IMO: 9741372
Type: Container ship
Average cargo carried: 116,999 t
Flag (estimated): Japan
Port of registry: Tokyo
Technical efficiency: EEDI 5.90 g CO₂/t·nm
Former names: NYK BLUE JAY

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 111,771 t of cargo on average.

Fuel kg/nm

239

Container median 186 kg/nm (+29%)

CO₂ per transport work (cargo)

6.77

g CO₂/t·nm · Container median 17.9 (−62%)

Average speed

15.2 kn

Container median 14.1 kn (+8%)

Fuel per day at sea

87.4 t/day

Fuel consumed

4,997 t

CO₂ emitted

15,808 t

Distance sailed

20,891 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,372 h

57 days, 16% 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 270 kg/nm · median 178 (+52%)

77.9Ranks 1,400 of 1,825, lowest first314

Average speedThis ship 13.0 kn · median 13.6 (−4%)

10.1Faster than 41% of container ships16.1

CO₂ per transport work (cargo)This ship 7.30 g CO₂/t·nm · median 19.1 (−62%)

7.44Ranks 166 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 ports5%
From the EU23%
Into the EU67%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

752 t

4.8% 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 BLUE JAY
Container median

150.0175.0200.0225.0250.0275.0

’182018’192019’202020’212021’222022

Average speed, kn

ONE BLUE JAY
Container median

13.014.015.016.0

’182018’192019’202020’212021’222022

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

ONE BLUE JAY
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	−2.2 kn	+13%	−4%	−63%	+8%	2.2 kn slower, fuel per mile up 13%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.4 kn	+15%	+18%	−32%	+18%	0.4 kn faster, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.4 kn	+3%	+6%	−22%	−6%	0.4 kn faster, fuel per mile up 3%; in line with the speed change.
2018→2019	−1.4 kn	−21%	−28%	−13%	−19%	1.4 kn slower, fuel per mile down 21%; 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	2,076	6,576	7,699	591	13.0	270	7.30	–
2021	not published	4,997	15,808	20,891	1,372	15.2	239	6.77	–
2020	not published	6,393	20,177	30,721	2,079	14.8	208	5.76	–
2019	not published	7,889	24,591	39,193	2,728	14.4	201	6.10	–
2018	not published	11,544	35,991	45,280	2,861	15.8	255	7.51	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2022	not published	7.30	19.1	−62%	166 of 1,825	ClassNK	C
2021	not published	6.77	17.9	−62%	123 of 1,781	ClassNK	C
2020	not published	5.76	17.6	−67%	38 of 1,797	ClassNK	C
2019	not published	6.10	18.9	−68%	46 of 1,788	ClassNK	C
2018	not published	7.51	20.2	−63%	101 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.