Navalyze · Container · Ship

ARIES J

IMO: 9514767
Type: Container ship
Average cargo carried: 5,214 t
Flag (estimated): Portugal
Port of registry: Madeira
Technical efficiency: EEXI 22.29 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: Beheermaatschappij MS 'ARIES J' B.V.

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 6,070 t of cargo on average.

Fuel kg/nm

83.1

Container median 182 kg/nm (−54%)

CO₂ per transport work (cargo)

42.8

g CO₂/t·nm · Container median 20.2 (+112%)

Average speed

12.7 kn

Container median 13.8 kn (−8%)

Fuel per day at sea

25.2 t/day

Fuel consumed

6,152 t

CO₂ emitted

19,211 t

Distance sailed

73,986 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,847 h

244 days, 67% 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 63.2 kg/nm · median 177 (−64%)

78.8Ranks 51 of 2,208, lowest first302

Average speedThis ship 15.7 kn · median 13.3 (+18%)

9.1Faster than 85% of container ships16.0

CO₂ per transport work (cargo)This ship 37.8 g CO₂/t·nm · median 16.3 (+132%)

7.22Ranks 1,844 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 ports68%
From the EU7%
Into the EU21%
At berth in the EU4%

Fuel burned laden

–

Not reported

CO₂ at berth

845 t

4.4% 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

ARIES J
Container median

50.0100.0150.0200.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

ARIES J
Container median

10.012.014.016.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

ARIES J
Container median

0.020.040.060.0

’182018’192019’202020’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+4.6 kn	−23%	+8%	+28%	−31%	4.6 kn faster, fuel per mile down 23%; better than speed alone explains (hull, engine or trade).
2023→2024	−1.0 kn	+6%	−2%	+80%	−7%	1.0 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.5 kn	+4%	+8%	−37%	+38%	0.5 kn faster, fuel per mile up 4%; in line with the speed change.
2021→2022	+0.6 kn	−12%	−7%	+5%	+24%	0.6 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.2 kn	−5%	−6%	−35%	−12%	Same speed, fuel per mile down 5%; in line with the speed change.
2019→2020	+0.0 kn	−2%	−2%	−10%	−0%	Same speed, fuel per mile flat.
2018→2019	−1.5 kn	+8%	−4%	−12%	−9%	1.5 kn slower, fuel per mile up 8%; 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	Beheermaatschappij MS 'ARIES J' B.V.	3,697	11,528	58,511	3,737	15.7	63.2	37.8	100%
2024	Beheermaatschappij MS 'ARIES J' B.V.	3,739	11,668	45,636	4,094	11.1	81.9	54.4	–
2023	not published	1,954	6,102	25,390	2,104	12.1	77.0	58.3	–
2022	not published	2,980	9,463	40,374	3,472	11.6	73.8	42.4	–
2021	not published	3,214	10,303	38,377	3,486	11.0	83.7	34.1	–
2020	not published	5,184	16,421	58,713	5,263	11.2	88.3	38.6	–
2019	not published	5,858	18,377	64,981	5,811	11.2	90.1	38.7	–
2018	not published	6,152	19,211	73,986	5,847	12.7	83.1	42.8	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	Beheermaatschappij MS 'ARIES J' B.V.	37.8	16.3	+132%	1,844 of 2,208	RINA	A
2024	Beheermaatschappij MS 'ARIES J' B.V.	54.4	17.5	+211%	1,812 of 1,974	RINA	A
2023	not published	58.3	19.4	+200%	1,772 of 1,899	Dromon Bureau of Shipping	A
2022	not published	42.4	19.1	+121%	1,511 of 1,825	Dromon Bureau of Shipping	A
2021	not published	34.1	17.9	+91%	1,393 of 1,781	RINA	A
2020	not published	38.6	17.6	+120%	1,461 of 1,797	RINA	A
2019	not published	38.7	18.9	+105%	1,396 of 1,788	RINA	A
2018	not published	42.8	20.2	+112%	1,388 of 1,705	RINA	A

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.