Navalyze · Oil tanker · Ship

STEN POSEIDON

IMO: 9322700
Type: Oil tanker
Average cargo carried: 7,272 t
Flag (estimated): Portugal
Port of registry: Madeira
Technical efficiency: EEXI 8.21 g CO₂/t·nm
Ice class: IA
Former names: BRO NIBE

ISM company (DoC holder) in 2025: Rederiet Stenersen AS

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 7,272 t of cargo on average.

Fuel kg/nm

70.2

Oil tanker median 129 kg/nm (−45%)

CO₂ per transport work (cargo)

31.0

g CO₂/t·nm · Oil tanker median 7.95 (+289%)

Average speed

10.2 kn

Oil tanker median 10.7 kn (−5%)

Fuel per day at sea

17.1 t/day

Fuel consumed

2,210 t

CO₂ emitted

7,085 t

7,193 t CO₂eq incl. CH₄ and N₂O

Distance sailed

31,477 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,099 h

129 days, 35% 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 70.2 kg/nm · median 129 (−45%)

76.1Ranks 130 of 1,665, lowest first191

Average speedThis ship 10.2 kn · median 10.7 (−5%)

8.0Faster than 34% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 31.0 g CO₂/t·nm · median 7.95 (+289%)

4.51Ranks 1,528 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 ports67%
From the EU5%
Into the EU8%
At berth in the EU20%

93% of this ship's CO₂ falls under the EU ETS (6,606 t).

Fuel burned laden

–

Not reported

CO₂ at berth

1,397 t

19.7% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+108 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

STEN POSEIDON
Oil tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

STEN POSEIDON
Oil tanker median

9.510.010.511.011.5

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

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

STEN POSEIDON
Oil tanker median

0.010.020.030.040.050.0

’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	−14%	−13%	+17%	−17%	Same speed, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.2 kn	+15%	+17%	−27%	+25%	Same speed, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.1 kn	−6%	−7%	+285%	−37%	Same speed, fuel per mile down 6%; in line with the speed change.
2021→2022	−0.8 kn	+9%	+1%	−70%	+62%	0.8 kn slower, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.5 kn	−3%	−7%	−11%	−8%	0.5 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.3 kn	+9%	+12%	−8%	+18%	Same speed, fuel per mile up 9%; in line with the speed change.
2018→2019	+0.6 kn	−15%	−10%	+31%	−5%	0.6 kn faster, fuel per mile down 15%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	Rederiet Stenersen AS	2,210	7,085	31,477	3,099	10.2	70.2	31.0	–
2024part-year	Rederiet Stenersen AS	2,114	6,777	25,938	2,612	9.9	81.5	37.1	–
2024	Rederiet Stenersen AS	2,201	7,056	26,833	2,696	10.0	82.0	37.1	–
2023	not published	2,618	8,375	36,872	3,767	9.8	71.0	29.8	–
2022	not published	724	2,309	9,567	966	9.9	75.7	47.3	39%
2021	not published	2,239	7,157	32,192	3,006	10.7	69.6	29.3	–
2020	not published	2,592	8,287	36,112	3,233	11.2	71.8	31.8	–
2019	not published	2,562	8,042	39,056	3,598	10.9	65.6	27.0	–
2018	not published	2,301	7,215	29,739	2,897	10.3	77.4	28.3	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Rederiet Stenersen AS	31.0	7.95	+289%	1,528 of 1,665	DNV	B+C
2024part-year	Rederiet Stenersen AS	–	–	–	–	DNV	B+C
2024	Rederiet Stenersen AS	37.1	8.06	+360%	1,696 of 1,787	DNV	–
2023	not published	29.8	8.44	+252%	1,655 of 1,797	DNV	B+C
2022	not published	47.3	8.51	+456%	1,900 of 1,961	ABS	B+C
2021	not published	29.3	8.86	+230%	1,649 of 1,789	ABS	B+C
2020	not published	31.8	9.03	+252%	1,747 of 1,870	ABS	B+C
2019	not published	27.0	8.83	+206%	1,752 of 1,919	ABS	B+C
2018	not published	28.3	8.86	+220%	1,653 of 1,779	ABS	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.