Navalyze · Oil tanker · Ship

STEN FRIGG

IMO: 9407976
Type: Oil tanker
Average cargo carried: 7,824 t
Flag (estimated): Portugal
Port of registry: Madeira
Technical efficiency: EEXI 7.43 g CO₂/t·nm
Ice class: IA

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

Report year

2019 at a glance

From the 2019 THETIS-MRV report. Carries about 7,866 t of cargo on average.

Fuel kg/nm

62.0

Oil tanker median 138 kg/nm (−55%)

CO₂ per transport work (cargo)

25.3

g CO₂/t·nm · Oil tanker median 8.83 (+186%)

Average speed

7.7 kn

Oil tanker median 9.7 kn (−21%)

Fuel per day at sea

11.5 t/day

Fuel consumed

2,858 t

CO₂ emitted

9,164 t

Distance sailed

46,082 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,974 h

249 days, 68% 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 65.4 kg/nm · median 129 (−49%)

76.1Ranks 102 of 1,665, lowest first191

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

8.0Faster than 29% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 26.7 g CO₂/t·nm · median 7.95 (+236%)

4.51Ranks 1,485 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2019

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 ports53%
From the EU11%
Into the EU18%
At berth in the EU17%

Fuel burned laden

–

Not reported

CO₂ at berth

1,551 t

16.9% 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 FRIGG
Oil tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

STEN FRIGG
Oil tanker median

7.08.09.010.011.0

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

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

STEN FRIGG
Oil tanker median

0.010.020.030.0

’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	+0.5 kn	+4%	+9%	+16%	+20%	0.5 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.5 kn	−10%	−15%	+20%	−22%	0.5 kn slower, fuel per mile down 10%; in line with the speed change.
2022→2023	−0.2 kn	+2%	+0%	−21%	+14%	Same speed, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.1 kn	+11%	+11%	−2%	+6%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.1 kn	+0%	+0%	−9%	−6%	Same speed, fuel per mile flat.
2019→2020	+2.5 kn	−0%	+31%	−6%	−1%	2.5 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2018→2019	+0.6 kn	+3%	+12%	+6%	+17%	0.6 kn faster, fuel per mile up 3%; 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	2,772	8,858	42,402	4,257	10.0	65.4	26.7	–
2024part-year	Rederiet Stenersen AS	2,241	7,160	35,729	3,781	9.5	62.7	21.8	–
2024	Rederiet Stenersen AS	2,292	7,323	36,416	3,847	9.5	62.9	22.3	–
2023	not published	2,128	6,823	30,354	3,047	10.0	70.1	28.7	–
2022	not published	2,651	8,490	38,472	3,784	10.2	68.9	25.1	–
2021	not published	2,449	7,852	39,452	3,895	10.1	62.1	23.6	–
2020	not published	2,682	8,600	43,367	4,265	10.2	61.9	25.0	–
2019	not published	2,858	9,164	46,082	5,974	7.7	62.0	25.3	–
2018	not published	2,618	8,370	43,513	6,106	7.1	60.2	21.7	–

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	26.7	7.95	+236%	1,485 of 1,665	DNV	B+C
2024part-year	Rederiet Stenersen AS	–	–	–	–	DNV	B+C
2024	Rederiet Stenersen AS	22.3	8.06	+177%	1,560 of 1,787	DNV	B+C
2023	not published	28.7	8.44	+240%	1,650 of 1,797	DNV	A
2022	not published	25.1	8.51	+194%	1,767 of 1,961	DNV	A
2021	not published	23.6	8.86	+167%	1,581 of 1,789	DNV	A
2020	not published	25.0	9.03	+177%	1,661 of 1,870	DNV	A
2019	not published	25.3	8.83	+186%	1,729 of 1,919	DNV	A
2018	not published	21.7	8.86	+144%	1,564 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.