Navalyze · Chemical tanker · Ship

UIKKU

IMO: 9797814
Type: Chemical tanker
Average cargo carried: 12,513 t
Flag (estimated): Finland
Port of registry: Helsinki
Technical efficiency: EEXI 6.92 g CO₂/t·nm
Ice class: IA
Former names: STEN TOR

ISM company (DoC holder) in 2025: OSM Ship management Finland Oy · part of OSM Thome

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 10,345 t of cargo on average.

Fuel kg/nm

63.1

Oil tanker median 129 kg/nm (−51%)

CO₂ per transport work (cargo)

19.6

g CO₂/t·nm · Oil tanker median 8.44 (+132%)

Average speed

9.9 kn

Oil tanker median 11.0 kn (−10%)

Fuel per day at sea

15.0 t/day

Fuel consumed

3,241 t

CO₂ emitted

10,392 t

Distance sailed

51,327 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,171 h

215 days, 59% of the year

Within the chemical tanker fleet, 2025

Set against all 1,460 chemical 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 73.9 kg/nm · median 79.7 (−7%)

52.8Ranks 581 of 1,460, lowest first111

Average speedThis ship 10.4 kn · median 11.1 (−6%)

8.8Faster than 31% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 18.9 g CO₂/t·nm · median 15.0 (+26%)

7.93Ranks 907 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2023

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 ports84%
From the EU0%
Into the EU0%
At berth in the EU16%

Fuel burned laden

–

Not reported

CO₂ at berth

1,621 t

15.6% 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 Chemical tanker median is the middle ship of all chemical tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

UIKKU
Chemical tanker median

40.060.080.0100.0120.0140.0

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

Average speed, kn

UIKKU
Chemical tanker median

7.08.09.010.011.012.0

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

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

UIKKU
Chemical tanker median

5.010.015.020.025.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.4 kn	+8%	+12%	+0%	−10%	0.4 kn faster, fuel per mile up 8%; in line with the speed change.
2023→2024	+0.1 kn	+9%	+10%	−10%	+7%	Same speed, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.5 kn	−5%	−9%	+11%	−20%	0.5 kn slower, fuel per mile down 5%; in line with the speed change.
2021→2022	+1.7 kn	−8%	+10%	+16%	−1%	1.7 kn faster, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2019→2021	−0.2 kn	+37%	+34%	−20%	+37%	Same speed, fuel per mile up 37%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+1.2 kn	−22%	−9%	+228%	+4%	1.2 kn faster, fuel per mile down 22%; 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	OSM Ship management Finland Oy	3,424	10,977	46,338	4,454	10.4	73.9	18.9	–
2024	OSM Ship management Finland Oy	3,172	10,170	46,185	4,614	10.0	68.7	21.0	–
2023	not published	3,241	10,392	51,327	5,171	9.9	63.1	19.6	–
2022	not published	3,046	9,765	46,047	4,444	10.4	66.1	24.5	–
2021	not published	2,857	9,159	39,731	4,557	8.7	71.9	24.7	–
2019	not published	2,609	8,365	49,726	5,595	8.9	52.5	18.0	–
2018	not published	1,013	3,204	15,146	1,976	7.7	66.9	17.3	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	OSM Ship management Finland Oy	18.9	15.0	+26%	907 of 1,460	DNV	B+C
2024	OSM Ship management Finland Oy	21.0	16.7	+26%	804 of 1,274	DNV	B+C
2023	not published	19.6	8.44	+132%	1,533 of 1,797	DNV	C
2022	not published	24.5	8.51	+188%	1,757 of 1,961	DNV	C
2021	not published	24.7	8.86	+178%	1,599 of 1,789	DNV	C
2019	not published	18.0	17.3	+4%	703 of 1,321	DNV	A
2018	not published	17.3	17.1	+1%	657 of 1,294	DNV	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Chemical 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 chemical 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.