Navalyze · Oil tanker · Ship

APSOGOS

IMO: 9282053
Type: Oil tanker
Average cargo carried: 83,568 t
Port of registry: Monrovia
Technical efficiency: EEXI 3.30 g CO₂/t·nm
Former names: ESTHER SPIRIT

ISM company (DoC holder) in 2025: IMS S.A.

Report year

2024 at a glance

From the 2024 THETIS-MRV report. Carries about 83,568 t of cargo on average.

Fuel per mile

153.5 kg/nm

Oil tanker median 129.0 kg/nm (+19%)

CO₂ per transport work (cargo)

5.79

g CO₂/t·nm · Oil tanker median 8.06 (−28%)

Average speed

11.0 kn

Oil tanker median 10.9 kn (+1%)

Fuel per day at sea

40.3 t/day

Fuel consumed

1,649 t

CO₂ emitted

5,199 t

5,280 t CO₂eq incl. CH₄ and N₂O

Distance sailed

10,744 nm

CO₂ ÷ CO₂ per mile

Time at sea

981 h

41 days, 11% of the year

Within the oil tanker fleet, 2024

Set against all 1,787 oil tanker ships with a full-year 2024 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 per mileThis ship 153.5 kg/nm · median 129.0 (+19%)

79.5Ranks 1,306 of 1,787, lowest first193.6

Average speedThis ship 11.0 kn · median 10.9 (+1%)

8.1Faster than 51% of oil tanker ships12.3

CO₂ per transport work (cargo)This ship 5.79 g CO₂/t·nm · median 8.06 (−28%)

4.44Ranks 432 of 1,787, lowest first25.70

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2024

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 ports4%
From the EU14%
Into the EU77%
At berth in the EU5%

27% of this ship's CO₂ falls under the EU ETS (1,399 t).

Fuel burned laden

–

Not reported

CO₂ at berth

4.8%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift 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 per mile, kg/nm

APSOGOS
Oil tanker median

100.0125.0150.0175.0200.0225.0

’182018’192019’202020’212021’232023’242024

Average speed, kn

APSOGOS
Oil tanker median

8.09.010.011.012.0

’182018’192019’202020’212021’232023’242024

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

APSOGOS
Oil tanker median

0.05.010.015.020.0

’182018’192019’202020’212021’232023’242024

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2023→2024	+0.1 kn	+13%	+13%	+87%	+22%	Same speed, fuel per mile up 13%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2023	−1.0 kn	+4%	−5%	−51%	−5%	1.0 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.3 kn	+9%	+23%	−45%	−17%	1.3 kn faster, fuel per mile up 9%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.5 kn	−33%	−30%	+189%	−61%	0.5 kn faster, fuel per mile down 33%; better than speed alone explains (hull, engine or trade).
2018→2019	+2.1 kn	−18%	+3%	−71%	−20%	2.1 kn faster, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).

Part-year reports are left out of these comparisons. 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025part-year	IMS S.A.	0	0	–	0	–	–	–	–
2024part-year	Teekay Marine (Singapore) Pte. Ltd.	843	2,652	5,833	550	10.6	144.6	6.00	–
2024	IMS S.A.	1,649	5,199	10,744	981	11.0	153.5	5.79	–
2023	not published	779	2,437	5,734	525	10.9	135.9	4.76	–
2021	not published	1,544	4,823	11,777	987	11.9	131.1	5.02	–
2020	not published	2,587	8,130	21,540	2,037	10.6	120.1	6.02	–
2019	not published	1,337	4,213	7,442	740	10.1	179.6	15.44	–
2018	not published	5,595	17,707	25,448	3,192	8.0	219.9	19.24	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025part-year	IMS S.A.	–	–	–	–	Bureau Veritas	A
2024part-year	Teekay Marine (Singapore) Pte. Ltd.	–	–	–	–	DNV	B+C
2024	IMS S.A.	5.79	8.06	−28%	432 of 1,787	Bureau Veritas	A
2023	not published	4.76	8.44	−44%	176 of 1,797	DNV	B+C
2021	not published	5.02	8.86	−43%	225 of 1,789	DNV	B+C
2020	not published	6.02	9.03	−33%	363 of 1,870	DNV	B
2019	not published	15.44	8.83	+75%	1,508 of 1,919	DNV	B+C
2018	not published	19.24	8.86	+117%	1,519 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.