Navalyze · Chemical tanker · Ship

OLYMPUS

IMO: 9310355
Type: Chemical tanker
Average cargo carried: 5,669 t
Flag (estimated): Sweden
Port of registry: DonsÖ
Technical efficiency: EEXI 11.01 g CO₂/t·nm
Ice class: IA Super

ISM company (DoC holder) in 2025: Sirius Shipping AB

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 4,583 t of cargo on average.

Fuel kg/nm

50.0

Chemical tanker median 81.9 kg/nm (−39%)

CO₂ per transport work (cargo)

35.0

g CO₂/t·nm · Chemical tanker median 16.2 (+115%)

Average speed

10.7 kn

Chemical tanker median 11.2 kn (−4%)

Fuel per day at sea

12.9 t/day

Fuel consumed

3,198 t

CO₂ emitted

10,254 t

Distance sailed

64,020 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,966 h

249 days, 68% 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 55.0 kg/nm · median 79.7 (−31%)

52.8Ranks 175 of 1,460, lowest first111

Average speedThis ship 10.9 kn · median 11.1 (−2%)

8.8Faster than 43% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 31.0 g CO₂/t·nm · median 15.0 (+106%)

7.93Ranks 1,188 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 ports93%
From the EU1%
Into the EU0%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

548 t

5.3% 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

OLYMPUS
Chemical tanker median

40.060.080.0100.0

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

Average speed, kn

OLYMPUS
Chemical tanker median

10.010.511.011.5

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

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

OLYMPUS
Chemical tanker median

10.020.030.040.0

’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	+0.3 kn	−1%	+1%	+3%	+7%	0.3 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2023→2024	−0.1 kn	+11%	+9%	−8%	−17%	Same speed, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.0 kn	+8%	+8%	−17%	−2%	Same speed, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.2 kn	+5%	+7%	+2%	+12%	Same speed, fuel per mile up 5%; in line with the speed change.
2020→2021	−0.5 kn	−12%	−16%	+1%	−13%	0.5 kn slower, fuel per mile down 12%; in line with the speed change.
2019→2020	+0.4 kn	+10%	+14%	+3%	+9%	0.4 kn faster, fuel per mile up 10%; in line with the speed change.
2018→2019	+0.1 kn	−8%	−8%	+1%	−6%	Same speed, fuel per mile down 8%; 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	Sirius Shipping AB	3,337	10,649	60,680	5,588	10.9	55.0	31.0	–
2024	Sirius Shipping AB	3,287	10,539	59,169	5,576	10.6	55.5	28.9	–
2023	not published	3,198	10,254	64,020	5,966	10.7	50.0	35.0	–
2022	not published	3,538	11,343	76,794	7,152	10.7	46.1	35.8	–
2021	not published	3,318	10,638	75,473	7,190	10.5	44.0	31.8	–
2020	not published	3,717	11,916	74,552	6,759	11.0	49.9	36.5	–
2019	not published	3,300	10,580	72,477	6,857	10.6	45.5	33.4	–
2018	not published	3,560	11,414	71,682	6,808	10.5	49.7	35.7	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Sirius Shipping AB	31.0	15.0	+106%	1,188 of 1,460	DNV	B+C
2024	Sirius Shipping AB	28.9	16.7	+73%	964 of 1,274	DNV	B+C
2023	not published	35.0	16.2	+115%	1,097 of 1,314	DNV	B+C
2022	not published	35.8	16.1	+123%	1,215 of 1,409	DNV	B+C
2021	not published	31.8	16.7	+91%	1,091 of 1,343	DNV	B+C
2020	not published	36.5	16.2	+126%	1,135 of 1,312	DNV	B+C
2019	not published	33.4	17.3	+93%	1,089 of 1,321	DNV	B+C
2018	not published	35.7	17.1	+108%	1,080 of 1,294	DNV	B+C

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.