Navalyze · Oil tanker · Ship

IONIC ARIADNE

IMO: 9856555
Type: Oil tanker
Average cargo carried: 50,642 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EEDI 2.98 g CO₂/t·nm

ISM company (DoC holder) in 2025: IONIC TANKERS (MGT) INC. · part of Ionic Shipping

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 50,642 t of cargo on average.

Fuel kg/nm

123

Oil tanker median 129 kg/nm (−4%)

CO₂ per transport work (cargo)

7.62

g CO₂/t·nm · Oil tanker median 7.95 (−4%)

Average speed

9.5 kn

Oil tanker median 10.7 kn (−11%)

Fuel per day at sea

28.0 t/day

Fuel consumed

4,037 t

CO₂ emitted

12,645 t

12,843 t CO₂eq incl. CH₄ and N₂O

Distance sailed

32,767 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,463 h

144 days, 40% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil tanker 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 123 kg/nm · median 129 (−4%)

76.1Ranks 736 of 1,665, lowest first191

Average speedThis ship 9.5 kn · median 10.7 (−11%)

8.0Faster than 22% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 7.62 g CO₂/t·nm · median 7.95 (−4%)

4.51Ranks 766 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker 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 ports0%
From the EU41%
Into the EU52%
At berth in the EU7%

53% of this ship's CO₂ falls under the EU ETS (6,749 t).

Fuel burned laden

–

Not reported

CO₂ at berth

852 t

6.7% 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

+198 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 Oil tanker median is the middle ship of all oil tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

IONIC ARIADNE
Oil tanker median

100.0110.0120.0130.0140.0

’202020’212021’222022’232023’242024’252025

Average speed, kn

IONIC ARIADNE
Oil tanker median

9.010.011.012.0

’202020’212021’222022’232023’242024’252025

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

IONIC ARIADNE
Oil tanker median

6.07.08.09.010.0

’202020’212021’222022’232023’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−2.1 kn	−3%	−20%	+13%	–	2.1 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.2 kn	+15%	+12%	+33%	–	Same speed, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.7 kn	+2%	+20%	+73%	+2%	1.7 kn faster, fuel per mile up 2%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.8 kn	−16%	−22%	−23%	−18%	0.8 kn slower, fuel per mile down 16%; in line with the speed change.
2020→2021	−0.9 kn	−8%	−15%	−1%	+28%	0.9 kn slower, fuel per mile down 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	IONIC TANKERS (MGT) INC.	4,037	12,645	32,767	3,463	9.5	123	7.62	–
2024	IONIC TANKERS (MGT) INC.	3,678	11,515	28,962	2,505	11.6	127	–	–
2023	not published	2,405	7,519	21,832	1,845	11.8	110	6.71	–
2022	not published	1,357	4,237	12,608	1,246	10.1	108	6.55	–
2021	not published	2,093	6,558	16,338	1,498	10.9	128	7.98	–
2020	not published	2,310	7,236	16,526	1,402	11.8	140	6.23	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	IONIC TANKERS (MGT) INC.	7.62	7.95	−4%	766 of 1,665	ClassNK	A
2024	IONIC TANKERS (MGT) INC.	–	–	–	–	ClassNK	A
2023	not published	6.71	8.44	−20%	577 of 1,797	ClassNK	A
2022	not published	6.55	8.51	−23%	586 of 1,961	ClassNK	A
2021	not published	7.98	8.86	−10%	759 of 1,789	ClassNK	A
2020	not published	6.23	9.03	−31%	404 of 1,870	ClassNK	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Oil tanker 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 oil tanker 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.