Navalyze · Oil tanker · Ship

ALFIOS

IMO: 9884241
Type: Oil tanker
Average cargo carried: 30,288 t
Flag (estimated): Bahamas
Port of registry: Nassau
Technical efficiency: EEXI 4.07 g CO₂/t·nm

ISM company (DoC holder) in 2025: Sun Enterprises ltd

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 30,288 t of cargo on average.

Fuel kg/nm

86.4

Oil tanker median 129 kg/nm (−33%)

CO₂ per transport work (cargo)

8.97

g CO₂/t·nm · Oil tanker median 7.95 (+13%)

Average speed

10.6 kn

Oil tanker median 10.7 kn (−1%)

Fuel per day at sea

21.9 t/day

Fuel consumed

421 t

CO₂ emitted

1,324 t

1,345 t CO₂eq incl. CH₄ and N₂O

Distance sailed

4,873 nm

CO₂ ÷ CO₂ per mile

Time at sea

461 h

19 days, 5% 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 86.4 kg/nm · median 129 (−33%)

76.1Ranks 271 of 1,665, lowest first191

Average speedThis ship 10.6 kn · median 10.7 (−1%)

8.0Faster than 45% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 8.97 g CO₂/t·nm · median 7.95 (+13%)

4.51Ranks 967 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 EU79%
Into the EU15%
At berth in the EU6%

53% of this ship's CO₂ falls under the EU ETS (703 t).

Fuel burned laden

–

Not reported

CO₂ at berth

82 t

6.2% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+21 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

ALFIOS
Oil tanker median

80.0100.0120.0140.0

’232023’252025

Average speed, kn

ALFIOS
Oil tanker median

10.011.012.013.0

’232023’252025

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

ALFIOS
Oil tanker median

7.510.012.515.017.5

’232023’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2023→2025	−2.4 kn	+3%	−16%	−31%	−48%	2.4 kn slower, fuel per mile up 3%; 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	Sun Enterprises ltd	421	1,324	4,873	461	10.6	86.4	8.97	–
2023	not published	587	1,828	7,032	542	13.0	83.5	17.4	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Sun Enterprises ltd	8.97	7.95	+13%	967 of 1,665	DNV	A
2023	not published	17.4	8.44	+106%	1,483 of 1,797	DNV	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.