Navalyze · Chemical tanker · Ship

BOW SUMMER

IMO: 9215270
Type: Chemical tanker
Average cargo carried: 23,242 t
Flag (estimated): Norway
Port of registry: Bergen
Technical efficiency: EEXI 4.98 g CO₂/t·nm

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

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 27,105 t of cargo on average.

Fuel kg/nm

107

Chemical tanker median 83.0 kg/nm (+29%)

CO₂ per transport work (cargo)

12.5

g CO₂/t·nm · Chemical tanker median 16.7 (−25%)

Average speed

12.7 kn

Chemical tanker median 11.2 kn (+13%)

Fuel per day at sea

32.7 t/day

Fuel consumed

6,302 t

CO₂ emitted

19,923 t

Distance sailed

58,755 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,628 h

193 days, 53% 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 106 kg/nm · median 79.7 (+33%)

52.8Ranks 1,260 of 1,460, lowest first111

Average speedThis ship 13.1 kn · median 11.1 (+18%)

8.8Faster than 98% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 14.3 g CO₂/t·nm · median 15.0 (−5%)

7.93Ranks 680 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2021

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 ports7%
From the EU37%
Into the EU50%
At berth in the EU6%

Fuel burned laden

–

Not reported

CO₂ at berth

1,148 t

5.8% 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 SUMMER
Chemical tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

BOW SUMMER
Chemical tanker median

10.011.012.013.014.0

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

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

BOW SUMMER
Chemical tanker median

10.012.014.016.018.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.4 kn	+3%	+6%	−33%	+31%	0.4 kn faster, fuel per mile up 3%; in line with the speed change.
2023→2024	−0.2 kn	−13%	−15%	+111%	−3%	Same speed, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.2 kn	+8%	+10%	−24%	−8%	Same speed, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.0 kn	+3%	+3%	−63%	−3%	Same speed, fuel per mile up 3%; in line with the speed change.
2020→2021	−0.1 kn	−11%	−11%	+53%	+18%	Same speed, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2018→2020	+1.5 kn	−5%	+7%	+42%	−6%	1.5 kn faster, fuel per mile down 5%; 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	Odfjell Management AS	2,459	7,709	23,227	1,767	13.1	106	14.3	–
2024	Odfjell Management AS	3,578	11,199	34,664	2,735	12.7	103	10.9	–
2023	not published	1,956	6,194	16,409	1,267	12.9	119	11.2	–
2022	not published	2,372	7,504	21,540	1,694	12.7	110	12.1	–
2021	not published	6,302	19,923	58,755	4,628	12.7	107	12.5	–
2020	not published	4,618	14,591	38,516	3,016	12.8	120	10.6	–
2018	not published	3,428	10,771	27,035	2,397	11.3	127	11.3	–

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	14.3	15.0	−5%	680 of 1,460	DNV	B+C
2024	Odfjell Management AS	10.9	16.7	−35%	310 of 1,274	DNV	B+C
2023	not published	11.2	16.2	−31%	306 of 1,314	DNV	B+C
2022	not published	12.1	16.1	−24%	413 of 1,409	DNV	B
2021	not published	12.5	16.7	−25%	367 of 1,343	DNV	B
2020	not published	10.6	16.2	−34%	219 of 1,312	DNV	B
2018	not published	11.3	17.1	−34%	270 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.