Navalyze · Oil tanker · Ship

ASTRAL

IMO: 9371878
Type: Oil tanker
Average cargo carried: 5,105 t
Flag (estimated): Sweden
Port of registry: DonsÖ
Technical efficiency: EEXI 11.12 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: Rederi AB Veritas Tankers

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 4,934 t of cargo on average.

Fuel kg/nm

55.1

Oil tanker median 129 kg/nm (−57%)

CO₂ per transport work (cargo)

35.3

g CO₂/t·nm · Oil tanker median 8.86 (+298%)

Average speed

10.3 kn

Oil tanker median 10.7 kn (−4%)

Fuel per day at sea

13.6 t/day

Fuel consumed

2,624 t

CO₂ emitted

8,289 t

Distance sailed

47,624 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,638 h

193 days, 53% 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 58.5 kg/nm · median 129 (−54%)

76.1Ranks 73 of 1,665, lowest first191

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

8.0Faster than 43% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 36.6 g CO₂/t·nm · median 7.95 (+360%)

4.51Ranks 1,562 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2021

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 ports74%
From the EU11%
Into the EU8%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

564 t

6.8% 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 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

ASTRAL
Oil tanker median

50.075.0100.0125.0150.0

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

Average speed, kn

ASTRAL
Oil tanker median

7.08.09.010.011.0

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

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

ASTRAL
Oil tanker median

0.010.020.030.040.0

’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	−0.2 kn	+2%	+0%	+1%	−5%	Same speed, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.0 kn	−2%	−2%	−8%	+6%	Same speed, fuel per mile flat.
2022→2023	+0.3 kn	−5%	−2%	+9%	+7%	Same speed, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2021→2022	+0.1 kn	+11%	+13%	−7%	−4%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.1 kn	−4%	−4%	−5%	+1%	Same speed, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2019→2020	+2.3 kn	+4%	+36%	+7%	+9%	2.3 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.4 kn	−5%	−10%	−4%	−1%	0.4 kn slower, fuel per mile down 5%; in line with the speed change.

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	Rederi AB Veritas Tankers	2,642	8,436	45,150	4,298	10.5	58.5	36.6	–
2024	Rederi AB Veritas Tankers	2,578	8,236	44,842	4,194	10.7	57.5	38.3	–
2023	not published	2,843	8,978	48,590	4,528	10.7	58.5	36.0	–
2022	not published	2,729	8,617	44,446	4,255	10.4	61.4	33.8	–
2021	not published	2,624	8,289	47,624	4,638	10.3	55.1	35.3	–
2020	not published	2,881	9,106	50,208	4,910	10.2	57.4	35.1	–
2019	not published	2,588	8,180	46,806	5,947	7.9	55.3	32.2	–
2018	not published	2,845	8,993	48,906	5,886	8.3	58.2	32.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Rederi AB Veritas Tankers	36.6	7.95	+360%	1,562 of 1,665	DNV	B+C
2024	Rederi AB Veritas Tankers	38.3	8.06	+376%	1,705 of 1,787	DNV	B+C
2023	not published	36.0	8.44	+327%	1,695 of 1,797	DNV	B+C
2022	not published	33.8	8.51	+297%	1,851 of 1,961	DNV	B+C
2021	not published	35.3	8.86	+298%	1,680 of 1,789	DNV	B+C
2020	not published	35.1	9.03	+289%	1,765 of 1,870	DNV	B+C
2019	not published	32.2	8.83	+265%	1,808 of 1,919	DNV	B+C
2018	not published	32.6	8.86	+268%	1,679 of 1,779	DNV	B+C

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.