Navalyze · Oil tanker · Ship

STEN BERGEN

IMO: 9407988
Type: Oil tanker
Average cargo carried: 7,577 t
Flag (estimated): Portugal
Port of registry: Madeira
Technical efficiency: EEXI 7.42 g CO₂/t·nm
Ice class: IA

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

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 10,165 t of cargo on average.

Fuel kg/nm

63.0

Oil tanker median 140 kg/nm (−55%)

CO₂ per transport work (cargo)

19.8

g CO₂/t·nm · Oil tanker median 8.86 (+124%)

Average speed

8.0 kn

Oil tanker median 9.8 kn (−18%)

Fuel per day at sea

12.1 t/day

Fuel consumed

2,842 t

CO₂ emitted

9,090 t

Distance sailed

45,098 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,637 h

235 days, 64% 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 61.8 kg/nm · median 129 (−52%)

76.1Ranks 83 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 26.1 g CO₂/t·nm · median 7.95 (+229%)

4.51Ranks 1,477 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2018

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 ports40%
From the EU15%
Into the EU37%
At berth in the EU8%

Fuel burned laden

–

Not reported

CO₂ at berth

749 t

8.2% 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

STEN BERGEN
Oil tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

STEN BERGEN
Oil tanker median

6.08.010.012.0

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

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

STEN BERGEN
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	+0.3 kn	−9%	−6%	−11%	−23%	Same speed, fuel per mile down 9%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.4 kn	−1%	−6%	−8%	+14%	0.4 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.4 kn	+15%	+11%	+15%	+14%	0.4 kn slower, fuel per mile up 15%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.7 kn	−6%	+1%	+21%	−3%	0.7 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.7 kn	+5%	−1%	−28%	+8%	0.7 kn slower, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+4.0 kn	−10%	+44%	+16%	+18%	4.0 kn faster, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2018→2019	−1.3 kn	+7%	−11%	−1%	+7%	1.3 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading 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	2,615	8,382	42,335	4,158	10.2	61.8	26.1	–
2024part-year	Rederiet Stenersen AS	3,094	9,921	45,492	4,607	9.9	68.0	33.9	–
2024	Rederiet Stenersen AS	3,219	10,321	47,562	4,804	9.9	67.7	34.1	–
2023	not published	3,558	11,406	51,758	5,002	10.3	68.7	29.9	–
2022	not published	2,704	8,669	45,061	4,204	10.7	60.0	26.2	–
2021	not published	2,365	7,582	37,155	3,721	10.0	63.6	27.1	–
2020	not published	3,141	10,069	51,778	4,861	10.7	60.6	25.1	–
2019	not published	2,993	9,568	44,534	6,661	6.7	67.2	21.2	–
2018	not published	2,842	9,090	45,098	5,637	8.0	63.0	19.8	–

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	26.1	7.95	+229%	1,477 of 1,665	DNV	B+C
2024part-year	Rederiet Stenersen AS	–	–	–	–	DNV	B+C
2024	Rederiet Stenersen AS	34.1	8.06	+323%	1,680 of 1,787	DNV	–
2023	not published	29.9	8.44	+254%	1,659 of 1,797	DNV	A
2022	not published	26.2	8.51	+208%	1,779 of 1,961	DNV	A
2021	not published	27.1	8.86	+205%	1,628 of 1,789	DNV	A
2020	not published	25.1	9.03	+177%	1,662 of 1,870	DNV	A
2019	not published	21.2	8.83	+140%	1,660 of 1,919	DNV	A
2018	not published	19.8	8.86	+124%	1,532 of 1,779	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.