Navalyze · Chemical tanker · Ship

SWAN ATLANTIC

IMO: 9790464
Type: Chemical tanker
Average cargo carried: 8,109 t
Port of registry: George Town
Technical efficiency: EEXI 6.99 g CO₂/t·nm
Former names: SUMMER PLOEG

ISM company (DoC holder) in 2025: INVENTOR CHEMICAL TANKERS AS

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 8,109 t of cargo on average.

Fuel per mile

70.6 kg/nm

Chemical tanker median 79.7 kg/nm (−11%)

CO₂ per transport work (cargo)

27.13

g CO₂/t·nm · Chemical tanker median 15.04 (+80%)

Average speed

11.4 kn

Chemical tanker median 11.1 kn (+3%)

Fuel per day at sea

19.3 t/day

Fuel consumed

3,324 t

CO₂ emitted

10,363 t

10,527 t CO₂eq incl. CH₄ and N₂O

Distance sailed

47,108 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,133 h

172 days, 47% 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 per mileThis ship 70.6 kg/nm · median 79.7 (−11%)

52.8Ranks 510 of 1,460, lowest first111.0

Average speedThis ship 11.4 kn · median 11.1 (+3%)

8.8Faster than 59% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 27.13 g CO₂/t·nm · median 15.04 (+80%)

7.93Ranks 1,129 of 1,460, lowest first40.17

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2025

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 ports74%
From the EU13%
Into the EU4%
At berth in the EU9%

61% of this ship's CO₂ falls under the EU ETS (6,352 t).

Fuel burned laden

–

Not reported

CO₂ at berth

9.1%

Alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

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 per mile, kg/nm

SWAN ATLANTIC
Chemical tanker median

50.075.0100.0125.0150.0175.0

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

Average speed, kn

SWAN ATLANTIC
Chemical tanker median

10.012.014.016.0

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

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

SWAN ATLANTIC
Chemical tanker median

10.020.030.040.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−0.9 kn	+4%	−3%	−15%	+4%	0.9 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−2.3 kn	−7%	−22%	+48%	−3%	2.3 kn slower, fuel per mile down 7%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.9 kn	−54%	−51%	+128%	−27%	0.9 kn faster, fuel per mile down 54%; better than speed alone explains (hull, engine or trade).
2021→2022	−1.2 kn	+115%	+98%	+223%	+89%	1.2 kn slower, fuel per mile up 115%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.4 kn	+9%	+12%	−80%	+34%	0.4 kn faster, fuel per mile up 9%; in line with the speed change.
2019→2020	+0.8 kn	−15%	−10%	+140%	−25%	0.8 kn faster, fuel per mile down 15%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.4 kn	+23%	+27%	−43%	+60%	0.4 kn faster, fuel per mile up 23%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	INVENTOR CHEMICAL TANKERS AS	3,324	10,363	47,108	4,133	11.4	70.6	27.13	–
2024	INVENTOR CHEMICAL TANKERS AS	3,736	11,640	55,246	4,498	12.3	67.6	26.02	–
2023	not published	2,725	8,588	37,355	2,552	14.6	73.0	26.86	–
2022	not published	2,606	8,119	16,419	1,195	13.7	158.7	36.63	–
2021	not published	375	1,181	5,083	341	14.9	73.7	19.39	–
2020	not published	1,741	5,432	25,742	1,778	14.5	67.6	14.46	–
2019	not published	854	2,665	10,745	782	13.7	79.4	19.21	–
2018	not published	1,218	3,808	18,818	1,418	13.3	64.7	12.03	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	INVENTOR CHEMICAL TANKERS AS	27.13	15.04	+80%	1,129 of 1,460	DNV	B+C
2024	INVENTOR CHEMICAL TANKERS AS	26.02	16.73	+56%	922 of 1,274	DNV	C
2023	not published	26.86	16.23	+65%	970 of 1,314	ClassNK	A
2022	not published	36.63	16.06	+128%	1,223 of 1,409	ClassNK	A
2021	not published	19.39	16.69	+16%	819 of 1,343	ClassNK	A
2020	not published	14.46	16.16	−11%	529 of 1,312	ClassNK	A
2019	not published	19.21	17.32	+11%	768 of 1,321	ClassNK	A
2018	not published	12.03	17.14	−30%	331 of 1,294	ABS	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.