Navalyze · Oil tanker · Ship

SIRI KNUTSEN

IMO: 9247168
Type: Oil tanker
Average cargo carried: 10,093 t
Flag (estimated): Norway
Port of registry: Haugesund
Technical efficiency: EEXI 5.71 g CO₂/t·nm

ISM company (DoC holder) in 2025: KNOT Management AS

Report year

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 11,840 t of cargo on average.

Fuel kg/nm

165

Oil tanker median 134 kg/nm (+23%)

CO₂ per transport work (cargo)

44.7

g CO₂/t·nm · Oil tanker median 9.03 (+395%)

Average speed

7.4 kn

Oil tanker median 11.0 kn (−33%)

Fuel per day at sea

29.3 t/day

Fuel consumed

4,820 t

CO₂ emitted

15,452 t

Distance sailed

29,171 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,949 h

165 days, 45% 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 244 kg/nm · median 129 (+90%)

76.1Ranks 1,618 of 1,665, lowest first191

Average speedThis ship 5.3 kn · median 10.7 (−50%)

8.0Faster than 1% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 77.6 g CO₂/t·nm · median 7.95 (+876%)

4.51Ranks 1,657 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2020

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 ports94%
From the EU0%
Into the EU0%
At berth in the EU6%

Fuel burned laden

–

Not reported

CO₂ at berth

994 t

6.4% 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

SIRI KNUTSEN
Oil tanker median

100.0150.0200.0250.0

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

Average speed, kn

SIRI KNUTSEN
Oil tanker median

2.04.06.08.010.012.0

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

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

SIRI KNUTSEN
Oil tanker median

0.020.040.060.080.0

’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	+0.1 kn	+20%	+21%	−35%	+31%	Same speed, fuel per mile up 20%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−3.5 kn	+17%	−30%	−27%	+35%	3.5 kn slower, fuel per mile up 17%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.5 kn	−17%	+0%	+24%	−33%	1.5 kn faster, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2021→2022	+0.3 kn	+4%	+9%	−8%	+5%	Same speed, fuel per mile up 4%; in line with the speed change.
2020→2021	−0.5 kn	+23%	+14%	−18%	+38%	0.5 kn slower, fuel per mile up 23%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+3.9 kn	−7%	+95%	+16%	−17%	3.9 kn faster, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.2 kn	−15%	−10%	+11%	−7%	Same speed, fuel per mile down 15%; better than speed alone explains (hull, engine or trade).

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	KNOT Management AS	3,143	10,076	12,862	2,425	5.3	244	77.6	–
2024	KNOT Management AS	4,053	12,993	19,903	3,799	5.2	204	59.3	–
2023	not published	4,775	15,308	27,395	3,149	8.7	174	43.9	–
2022	not published	4,645	14,892	22,026	3,065	7.2	211	65.0	–
2021	not published	4,872	15,621	24,025	3,499	6.9	203	62.0	–
2020	not published	4,820	15,452	29,171	3,949	7.4	165	44.7	–
2019	not published	4,468	14,324	25,093	7,151	3.5	178	53.9	–
2018	not published	4,742	15,202	22,547	6,858	3.3	210	58.1	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	KNOT Management AS	77.6	7.95	+876%	1,657 of 1,665	DNV	A+C
2024	KNOT Management AS	59.3	8.06	+636%	1,757 of 1,787	Lloyd's Register	B
2023	not published	43.9	8.44	+420%	1,731 of 1,797	Lloyd's Register	B
2022	not published	65.0	8.51	+664%	1,932 of 1,961	Lloyd's Register	B
2021	not published	62.0	8.86	+599%	1,757 of 1,789	Lloyd's Register	B
2020	not published	44.7	9.03	+395%	1,803 of 1,870	Lloyd's Register	B
2019	not published	53.9	8.83	+511%	1,869 of 1,919	Lloyd's Register	–
2018	not published	58.1	8.86	+555%	1,745 of 1,779	Lloyd's Register	–

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.