Navalyze · Oil tanker · Ship

IONIC ASPIS

IMO: 9523287
Type: Oil tanker
Average cargo carried: 52,043 t
Flag (estimated): Marshall Islands
Port of registry: Majuro
Technical efficiency: EIV 3.82 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 52,043 t of cargo on average.

Fuel kg/nm

139

Oil tanker median 129 kg/nm (+8%)

CO₂ per transport work (cargo)

8.45

g CO₂/t·nm · Oil tanker median 7.95 (+6%)

Average speed

10.5 kn

Oil tanker median 10.7 kn (−2%)

Fuel per day at sea

35.0 t/day

Fuel consumed

5,900 t

CO₂ emitted

18,714 t

19,004 t CO₂eq incl. CH₄ and N₂O

Distance sailed

42,556 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,042 h

168 days, 46% 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 139 kg/nm · median 129 (+8%)

76.1Ranks 1,014 of 1,665, lowest first191

Average speedThis ship 10.5 kn · median 10.7 (−2%)

8.0Faster than 44% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 8.45 g CO₂/t·nm · median 7.95 (+6%)

4.51Ranks 914 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 ports21%
From the EU33%
Into the EU37%
At berth in the EU10%

65% of this ship's CO₂ falls under the EU ETS (12,213 t).

Fuel burned laden

–

Not reported

CO₂ at berth

1,823 t

9.7% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.3 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+290 t

+1.5% 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 ASPIS
Oil tanker median

120.0140.0160.0180.0

’182018’212021’222022’232023’242024’252025

Average speed, kn

IONIC ASPIS
Oil tanker median

6.08.010.012.0

’182018’212021’222022’232023’242024’252025

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

IONIC ASPIS
Oil tanker median

5.07.510.012.515.017.5

’182018’212021’222022’232023’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.7 kn	−1%	−7%	+79%	–	0.7 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.6 kn	+14%	+9%	−34%	–	0.6 kn slower, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.1 kn	−18%	−10%	+120%	+76%	1.1 kn faster, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).
2021→2022	+3.6 kn	−13%	+33%	+427%	−54%	3.6 kn faster, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2018→2021	−3.7 kn	−2%	−36%	−36%	−18%	3.7 kn slower, fuel per mile down 2%; 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.	5,900	18,714	42,556	4,042	10.5	139	8.45	–
2024	IONIC TANKERS (MGT) INC.	3,326	10,480	23,839	2,124	11.2	140	–	–
2023	not published	4,459	13,951	36,331	3,092	11.8	123	10.3	–
2022	not published	2,463	7,756	16,492	1,537	10.7	149	5.87	–
2021	not published	537	1,676	3,131	444	7.1	171	12.8	–
2018	not published	853	2,669	4,876	451	10.8	175	15.5	–

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.	8.45	7.95	+6%	914 of 1,665	ClassNK	A
2024	IONIC TANKERS (MGT) INC.	–	–	–	–	ClassNK	A
2023	not published	10.3	8.44	+22%	1,154 of 1,797	ClassNK	A
2022	not published	5.87	8.51	−31%	426 of 1,961	ClassNK	A
2021	not published	12.8	8.86	+44%	1,281 of 1,789	ClassNK	A
2018	not published	15.5	8.86	+75%	1,414 of 1,779	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.