Navalyze · Chemical tanker · Ship

LUNNI

IMO: 9797802
Type: Chemical tanker
Average cargo carried: 13,174 t
Flag (estimated): Finland
Port of registry: Helsinki
Technical efficiency: EEXI 6.82 g CO₂/t·nm
Ice class: IA
Former names: STEN ODIN

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

Report year

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 9,463 t of cargo on average.

Fuel kg/nm

57.1

Oil tanker median 134 kg/nm (−57%)

CO₂ per transport work (cargo)

19.3

g CO₂/t·nm · Oil tanker median 9.03 (+114%)

Average speed

10.9 kn

Oil tanker median 11.0 kn (−1%)

Fuel per day at sea

14.9 t/day

Fuel consumed

3,029 t

CO₂ emitted

9,683 t

Distance sailed

53,070 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,885 h

204 days, 56% 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 583 of 1,460, lowest first111

Average speedThis ship 10.7 kn · median 11.1 (−4%)

8.8Faster than 38% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 18.0 g CO₂/t·nm · median 15.0 (+20%)

7.93Ranks 875 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical 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 ports49%
From the EU21%
Into the EU18%
At berth in the EU12%

Fuel burned laden

–

Not reported

CO₂ at berth

1,203 t

12.4% 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 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

LUNNI
Chemical tanker median

40.060.080.0100.0120.0140.0

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

Average speed, kn

LUNNI
Chemical tanker median

8.09.010.011.012.0

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

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

LUNNI
Chemical 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	+0.8 kn	−2%	+6%	+6%	−16%	0.8 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2023→2024	−0.7 kn	+11%	+4%	−9%	+6%	0.7 kn slower, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.0 kn	−2%	+7%	+14%	−29%	1.0 kn faster, fuel per mile down 2%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.5 kn	−3%	−7%	+6%	+13%	0.5 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−0.8 kn	+26%	+17%	−21%	+31%	0.8 kn slower, fuel per mile up 26%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+2.4 kn	−3%	+24%	+9%	−2%	2.4 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.9 kn	−8%	−17%	+149%	+1%	0.9 kn slower, fuel per mile down 8%; worse than speed alone explains (fouling, weather, loading 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	3,583	11,486	48,466	4,531	10.7	73.9	18.0	–
2024	OSM Ship management Finland Oy	3,448	11,054	45,785	4,630	9.9	75.3	21.3	–
2023	not published	3,424	10,976	50,364	4,763	10.6	68.0	20.2	–
2022	not published	3,087	9,898	44,278	4,613	9.6	69.7	28.5	–
2021	not published	2,996	9,606	41,778	4,123	10.1	71.7	25.2	–
2020	not published	3,029	9,683	53,070	4,885	10.9	57.1	19.3	–
2019	not published	2,868	9,195	48,672	5,728	8.5	58.9	19.6	–
2018	not published	1,256	3,996	19,570	2,078	9.4	64.2	19.4	–

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	18.0	15.0	+20%	875 of 1,460	DNV	B+C
2024	OSM Ship management Finland Oy	21.3	16.7	+27%	812 of 1,274	DNV	B+C
2023	not published	20.2	16.2	+24%	805 of 1,314	DNV	B+C
2022	not published	28.5	8.51	+235%	1,808 of 1,961	DNV	C
2021	not published	25.2	8.86	+185%	1,612 of 1,789	DNV	C
2020	not published	19.3	9.03	+114%	1,569 of 1,870	DNV	C
2019	not published	19.6	17.3	+13%	790 of 1,321	DNV	A
2018	not published	19.4	17.1	+13%	773 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.