Navalyze · Oil tanker · Ship

STEN BALTIC

IMO: 9307671
Type: Oil tanker
Average cargo carried: 7,412 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

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 7,412 t of cargo on average.

Fuel kg/nm

71.3

Oil tanker median 129 kg/nm (−45%)

CO₂ per transport work (cargo)

30.7

g CO₂/t·nm · Oil tanker median 7.95 (+286%)

Average speed

10.0 kn

Oil tanker median 10.7 kn (−7%)

Fuel per day at sea

17.1 t/day

Fuel consumed

2,757 t

CO₂ emitted

8,795 t

8,931 t CO₂eq incl. CH₄ and N₂O

Distance sailed

38,665 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,866 h

161 days, 44% 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 71.3 kg/nm · median 129 (−45%)

76.1Ranks 135 of 1,665, lowest first191

Average speedThis ship 10.0 kn · median 10.7 (−7%)

8.0Faster than 30% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 30.7 g CO₂/t·nm · median 7.95 (+286%)

4.51Ranks 1,525 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 ports55%
From the EU16%
Into the EU16%
At berth in the EU13%

84% of this ship's CO₂ falls under the EU ETS (7,379 t).

Fuel burned laden

–

Not reported

CO₂ at berth

1,157 t

13.2% 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

+136 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 BALTIC
Oil tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

STEN BALTIC
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 BALTIC
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	+0.0 kn	+4%	+4%	+6%	+8%	Same speed, fuel per mile up 4%; in line with the speed change.
2023→2024	+0.3 kn	+3%	+6%	+3%	+3%	0.3 kn faster, fuel per mile up 3%; in line with the speed change.
2022→2023	−0.2 kn	−8%	−9%	−0%	+11%	Same speed, fuel per mile down 8%; in line with the speed change.
2021→2022	−0.4 kn	+6%	+2%	−22%	−6%	0.4 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.9 kn	−2%	+7%	+13%	+3%	0.9 kn faster, fuel per mile down 2%; better than speed alone explains (hull, engine or trade).
2019→2020	+3.1 kn	+8%	+63%	+3%	−3%	3.1 kn faster, fuel per mile up 8%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.3 kn	−5%	−10%	+1%	−5%	Same speed, fuel per mile down 5%; in line with the speed change.

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	2,757	8,795	38,665	3,866	10.0	71.3	30.7	–
2024part-year	Rederiet Stenersen AS	2,453	7,865	35,920	3,594	10.0	68.3	28.5	–
2024	Rederiet Stenersen AS	2,519	8,077	36,617	3,665	10.0	68.8	28.5	–
2023	not published	2,363	7,577	35,500	3,655	9.7	66.6	27.6	–
2022	not published	2,564	8,219	35,535	3,591	9.9	72.1	24.8	–
2021	not published	3,092	9,912	45,651	4,435	10.3	67.7	26.5	–
2020	not published	2,804	8,989	40,491	4,325	9.4	69.2	25.7	–
2019	not published	2,534	8,123	39,440	6,307	6.3	64.2	26.5	–
2018	not published	2,651	8,499	39,152	5,951	6.6	67.7	27.9	–

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	30.7	7.95	+286%	1,525 of 1,665	DNV	B+C
2024part-year	Rederiet Stenersen AS	–	–	–	–	DNV	B+C
2024	Rederiet Stenersen AS	28.5	8.06	+254%	1,644 of 1,787	DNV	–
2023	not published	27.6	8.44	+227%	1,639 of 1,797	DNV	B+C
2022	not published	24.8	8.51	+192%	1,765 of 1,961	DNV	A
2021	not published	26.5	8.86	+199%	1,624 of 1,789	DNV	A
2020	not published	25.7	9.03	+185%	1,676 of 1,870	DNV	A
2019	not published	26.5	8.83	+200%	1,742 of 1,919	DNV	A
2018	not published	27.9	8.86	+215%	1,647 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.