Navalyze · Container · Ship

IONIKOS

IMO: 9397614
Type: Container ship
Average cargo carried: 20,025 t
Flag (estimated): Liberia
Port of registry: Monrovia
Technical efficiency: EEXI 13.73 g CO₂/t·nm
Former names: CMA CGM JASPER

ISM company (DoC holder) in 2025: Dioryx Maritime Services Corporation

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 20,025 t of cargo on average.

Fuel kg/nm

148

Container median 177 kg/nm (−16%)

CO₂ per transport work (cargo)

23.2

g CO₂/t·nm · Container median 16.3 (+42%)

Average speed

13.6 kn

Container median 13.3 kn (+2%)

Fuel per day at sea

48.5 t/day

Fuel consumed

4,545 t

CO₂ emitted

14,230 t

14,453 t CO₂eq incl. CH₄ and N₂O

Distance sailed

30,643 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,249 h

94 days, 26% 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 148 kg/nm · median 177 (−16%)

78.8Ranks 914 of 2,208, lowest first302

Average speedThis ship 13.6 kn · median 13.3 (+2%)

9.1Faster than 54% of container ships16.0

CO₂ per transport work (cargo)This ship 23.2 g CO₂/t·nm · median 16.3 (+42%)

7.22Ranks 1,488 of 2,208, lowest first46.9

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports2%
From the EU41%
Into the EU56%
At berth in the EU1%

52% of this ship's CO₂ falls under the EU ETS (7,349 t).

Fuel burned laden

–

Not reported

CO₂ at berth

195 t

1.4% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+223 t

+1.6% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

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

IONIKOS
Container median

120.0140.0160.0180.0200.0

’182018’192019’202020’242024’252025

Average speed, kn

IONIKOS
Container median

0.010.020.030.0

’182018’192019’202020’242024’252025

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

IONIKOS
Container median

12.515.017.520.022.525.0

’182018’192019’202020’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+4.4 kn	−6%	+39%	+149%	+36%	4.4 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2020→2024	−4.5 kn	+28%	−13%	+75%	−11%	4.5 kn slower, fuel per mile up 28%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+7.1 kn	−11%	+85%	+215%	+33%	7.1 kn faster, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2018→2019	−21.1 kn	−23%	−82%	−81%	−16%	21.1 kn slower, fuel per mile down 23%; 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	Dioryx Maritime Services Corporation	4,545	14,230	30,643	2,249	13.6	148	23.2	–
2024	Dioryx Maritime Services Corporation	1,941	6,072	12,297	1,330	9.2	158	17.0	–
2020	not published	866	2,696	7,029	514	13.7	123	19.2	–
2019	not published	309	962	2,228	340	6.6	139	14.4	–
2018	not published	2,129	6,630	11,844	427	27.7	180	17.2	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025	Dioryx Maritime Services Corporation	23.2	16.3	+42%	1,488 of 2,208	Bureau Veritas	A
2024	Dioryx Maritime Services Corporation	17.0	17.5	−3%	955 of 1,974	Bureau Veritas	A
2020	not published	19.2	17.6	+9%	985 of 1,797	Bureau Veritas	A
2019	not published	14.4	18.9	−24%	608 of 1,788	Bureau Veritas	A
2018	not published	17.2	20.2	−15%	685 of 1,705	Bureau Veritas	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.