Navalyze · Container · Ship

ONE ALTAIR

IMO: 9468308
Type: Container ship
Average cargo carried: 55,631 t
Flag (estimated): Japan
Port of registry: Tokyo
Technical efficiency: EEXI 9.86 g CO₂/t·nm
Former names: NYK ALTAIR

ISM company (DoC holder) in 2025: ONESEA SOLUTIONS PTE LTD

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 68,896 t of cargo on average.

Fuel kg/nm

256

Container median 182 kg/nm (+41%)

CO₂ per transport work (cargo)

11.6

g CO₂/t·nm · Container median 20.2 (−43%)

Average speed

17.5 kn

Container median 13.8 kn (+27%)

Fuel per day at sea

107.7 t/day

Fuel consumed

17,322 t

CO₂ emitted

53,947 t

Distance sailed

67,735 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,860 h

161 days, 44% of the year

Within the container fleet, 2025

Set against all 2,208 container ships with a full-year 2025 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 187 kg/nm · median 177 (+6%)

78.8Ranks 1,188 of 2,208, lowest first302

Average speedThis ship 14.7 kn · median 13.3 (+11%)

9.1Faster than 72% of container ships16.0

CO₂ per transport work (cargo)This ship 10.4 g CO₂/t·nm · median 16.3 (−36%)

7.22Ranks 620 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2018

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 ports7%
From the EU58%
Into the EU34%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

1,219 t

2.3% 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 ALTAIR
Container median

150.0175.0200.0225.0250.0275.0

’182018’192019’202020’212021’252025

Average speed, kn

ONE ALTAIR
Container median

12.014.016.018.0

’182018’192019’202020’212021’252025

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

ONE ALTAIR
Container median

5.010.015.020.025.0

’182018’192019’202020’212021’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2021→2025	−2.3 kn	−19%	−30%	−14%	+6%	2.3 kn slower, fuel per mile down 19%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.2 kn	−5%	−4%	−43%	−7%	Same speed, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.1 kn	−6%	−6%	+189%	−4%	Same speed, fuel per mile down 6%; in line with the speed change.
2018→2019	−0.6 kn	+0%	−3%	−69%	−5%	0.6 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).

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
2025	ONESEA SOLUTIONS PTE LTD	5,511	17,095	29,492	2,007	14.7	187	10.4	–
2021	not published	7,877	24,842	34,116	2,009	17.0	231	9.80	–
2020	not published	14,627	46,095	60,336	3,583	16.8	242	10.5	–
2019	not published	5,368	16,724	20,895	1,238	16.9	257	11.0	–
2018	not published	17,322	53,947	67,735	3,860	17.5	256	11.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	ONESEA SOLUTIONS PTE LTD	10.4	16.3	−36%	620 of 2,208	ClassNK	B+C
2021	not published	9.80	17.9	−45%	305 of 1,781	ClassNK	C
2020	not published	10.5	17.6	−40%	417 of 1,797	ClassNK	C
2019	not published	11.0	18.9	−42%	399 of 1,788	ClassNK	C
2018	not published	11.6	20.2	−43%	353 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.