Navalyze · Chemical tanker · Ship

BOW SIRIUS

IMO: 9215294
Type: Chemical tanker
Average cargo carried: 35,178 t
Flag (estimated): Norway
Port of registry: Bergen
Technical efficiency: EEXI 4.99 g CO₂/t·nm

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

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 29,606 t of cargo on average.

Fuel kg/nm

122

Chemical tanker median 90.2 kg/nm (+35%)

CO₂ per transport work (cargo)

12.9

g CO₂/t·nm · Chemical tanker median 17.1 (−25%)

Average speed

12.1 kn

Chemical tanker median 10.1 kn (+20%)

Fuel per day at sea

35.5 t/day

Fuel consumed

4,920 t

CO₂ emitted

15,416 t

Distance sailed

40,396 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,331 h

139 days, 38% 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 102 kg/nm · median 79.7 (+28%)

52.8Ranks 1,215 of 1,460, lowest first111

Average speedThis ship 12.3 kn · median 11.1 (+11%)

8.8Faster than 87% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 9.11 g CO₂/t·nm · median 15.0 (−39%)

7.93Ranks 273 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2018

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 ports5%
From the EU46%
Into the EU41%
At berth in the EU8%

Fuel burned laden

–

Not reported

CO₂ at berth

1,236 t

8.0% 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

BOW SIRIUS
Chemical tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

BOW SIRIUS
Chemical tanker median

10.011.012.013.014.0

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

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

BOW SIRIUS
Chemical tanker median

7.510.012.515.017.5

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

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	−11%	−11%	−70%	−20%	Same speed, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2023→2024	−1.0 kn	+1%	−7%	+340%	+2%	1.0 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2023	+2.7 kn	−9%	+14%	−72%	−6%	2.7 kn faster, fuel per mile down 9%; better than speed alone explains (hull, engine or trade).
2020→2021	−2.1 kn	−0%	−17%	−9%	−2%	2.1 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.2 kn	−1%	+1%	+185%	−18%	Same speed, fuel per mile flat.
2018→2019	+0.5 kn	+4%	+8%	−69%	+16%	0.5 kn faster, fuel per mile up 4%; in line with the speed change.

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	Odfjell Management AS	1,244	3,896	12,156	989	12.3	102	9.11	–
2024	Odfjell Management AS	4,649	14,581	40,427	3,273	12.4	115	11.5	–
2023	not published	1,047	3,322	9,188	685	13.4	114	11.3	–
2021	not published	4,098	12,960	32,868	3,062	10.7	125	12.0	–
2020	not published	4,530	14,311	36,245	2,823	12.8	125	12.3	–
2019	not published	1,605	5,024	12,706	1,007	12.6	126	14.9	–
2018	not published	4,920	15,416	40,396	3,331	12.1	122	12.9	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Odfjell Management AS	9.11	15.0	−39%	273 of 1,460	DNV	B+C
2024	Odfjell Management AS	11.5	16.7	−32%	355 of 1,274	DNV	B+C
2023	not published	11.3	16.2	−31%	309 of 1,314	DNV	B+C
2021	not published	12.0	16.7	−28%	325 of 1,343	DNV	B
2020	not published	12.3	16.2	−24%	353 of 1,312	DNV	B
2019	not published	14.9	17.3	−14%	509 of 1,321	DNV	B
2018	not published	12.9	17.1	−25%	383 of 1,294	DNV	B

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.