Navalyze · Oil tanker · Ship

STEN TRITON

IMO: 9322695
Type: Oil tanker
Average cargo carried: 7,432 t
Flag (estimated): Portugal
Port of registry: Madeira
Technical efficiency: EEXI 7.79 g CO₂/t·nm
Ice class: IA
Former names: BRO NYBORG

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

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 7,432 t of cargo on average.

Fuel kg/nm

72.1

Oil tanker median 129 kg/nm (−44%)

CO₂ per transport work (cargo)

31.1

g CO₂/t·nm · Oil tanker median 7.95 (+291%)

Average speed

9.5 kn

Oil tanker median 10.7 kn (−11%)

Fuel per day at sea

16.4 t/day

Fuel consumed

1,966 t

CO₂ emitted

6,304 t

6,401 t CO₂eq incl. CH₄ and N₂O

Distance sailed

27,264 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,876 h

120 days, 33% 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 72.1 kg/nm · median 129 (−44%)

76.1Ranks 138 of 1,665, lowest first191

Average speedThis ship 9.5 kn · median 10.7 (−11%)

8.0Faster than 23% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 31.1 g CO₂/t·nm · median 7.95 (+291%)

4.51Ranks 1,530 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 ports59%
From the EU16%
Into the EU12%
At berth in the EU13%

86% of this ship's CO₂ falls under the EU ETS (5,423 t).

Fuel burned laden

–

Not reported

CO₂ at berth

836 t

13.3% 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

+97 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 TRITON
Oil tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

STEN TRITON
Oil tanker median

9.010.011.012.0

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

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

STEN TRITON
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	−0%	−2%	−12%	+6%	Same speed, fuel per mile flat.
2023→2024	+0.3 kn	−10%	−8%	+19%	−18%	Same speed, fuel per mile down 10%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.1 kn	+18%	+6%	−21%	−4%	1.1 kn slower, fuel per mile up 18%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.1 kn	−11%	−10%	+6%	+27%	Same speed, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.9 kn	−17%	−24%	+27%	−31%	0.9 kn slower, fuel per mile down 17%; in line with the speed change.
2019→2020	−0.2 kn	+29%	+27%	−24%	+41%	Same speed, fuel per mile up 29%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+2.4 kn	−18%	+4%	+19%	−25%	2.4 kn faster, fuel per mile down 18%; 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	1,966	6,304	27,264	2,876	9.5	72.1	31.1	–
2024part-year	Rederiet Stenersen AS	2,136	6,849	29,583	3,065	9.7	72.2	29.7	–
2024	Rederiet Stenersen AS	2,241	7,186	31,041	3,197	9.7	72.2	29.3	–
2023	not published	2,100	6,732	26,123	2,772	9.4	80.4	35.7	–
2022	not published	2,246	7,138	32,885	3,144	10.5	68.3	37.0	43%
2021	not published	2,380	7,614	30,911	2,983	10.4	77.0	29.2	–
2020	not published	2,268	7,234	24,407	2,159	11.3	92.9	42.2	–
2019	not published	2,304	7,189	31,954	2,778	11.5	72.1	29.9	–
2018	not published	2,354	7,352	26,797	2,948	9.1	87.8	40.0	–

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	31.1	7.95	+291%	1,530 of 1,665	DNV	B+C
2024part-year	Rederiet Stenersen AS	–	–	–	–	DNV	B+C
2024	Rederiet Stenersen AS	29.3	8.06	+263%	1,649 of 1,787	DNV	–
2023	not published	35.7	8.44	+323%	1,693 of 1,797	DNV	B+C
2022	not published	37.0	8.51	+335%	1,865 of 1,961	ABS	B+C
2021	not published	29.2	8.86	+230%	1,648 of 1,789	ABS	B+C
2020	not published	42.2	9.03	+367%	1,793 of 1,870	ABS	B+C
2019	not published	29.9	8.83	+238%	1,789 of 1,919	ABS	B+C
2018	not published	40.0	8.86	+352%	1,708 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.