Navalyze · Chemical tanker · Ship

ERRIA SWAN

IMO: 9347748
Type: Chemical tanker
Average cargo carried: 5,731 t
Flag (estimated): Denmark
Port of registry: Middelfart
Technical efficiency: EIV 15.79 g CO₂/t·nm
Ice class: IC

ISM company (DoC holder) in 2025: Uni-Tankers A/S

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 5,731 t of cargo on average.

Fuel kg/nm

62.1

Chemical tanker median 79.7 kg/nm (−22%)

CO₂ per transport work (cargo)

34.4

g CO₂/t·nm · Chemical tanker median 15.0 (+128%)

Average speed

9.8 kn

Chemical tanker median 11.1 kn (−12%)

Fuel per day at sea

14.6 t/day

Fuel consumed

49 t

CO₂ emitted

156 t

158 t CO₂eq incl. CH₄ and N₂O

Distance sailed

790 nm

CO₂ ÷ CO₂ per mile

Time at sea

80 h

3 days, 1% 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 62.1 kg/nm · median 79.7 (−22%)

52.8Ranks 308 of 1,460, lowest first111

Average speedThis ship 9.8 kn · median 11.1 (−12%)

8.8Faster than 21% of chemical tanker ships12.4

CO₂ per transport work (cargo)This ship 34.4 g CO₂/t·nm · median 15.0 (+128%)

7.93Ranks 1,231 of 1,460, lowest first40.2

Middle 80% of shipsMiddle 50%Chemical tanker medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports22%
From the EU11%
Into the EU43%
At berth in the EU24%

27% of this ship's CO₂ falls under the EU ETS (42 t).

Fuel burned laden

35 t

72% of all fuel; 28% in ballast or unladen

CO₂ at berth

38 t

24.1% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+2 t

+1.3% CO₂eq on top of CO₂ alone, 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 kg/nm

ERRIA SWAN
Chemical tanker median

40.060.080.0100.0

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

Average speed, kn

ERRIA SWAN
Chemical tanker median

4.06.08.010.012.0

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

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

ERRIA SWAN
Chemical tanker median

0.020.040.060.080.0

’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	−1.8 kn	+39%	+18%	−95%	+29%	1.8 kn slower, fuel per mile up 39%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.8 kn	−35%	−22%	+2,995%	−67%	1.8 kn faster, fuel per mile down 35%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.3 kn	+28%	+24%	−96%	+275%	Same speed, fuel per mile up 28%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−1.0 kn	−1%	−10%	+13%	−14%	1.0 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.0 kn	−6%	+4%	−6%	+6%	1.0 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2019→2020	+1.4 kn	+1%	+18%	−66%	−14%	1.4 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2018→2019	+3.3 kn	−21%	+26%	+85%	−47%	3.3 kn faster, fuel per mile down 21%; 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	Uni-Tankers A/S	49	156	790	80	9.8	62.1	34.4	72%
2024	Uni-Tankers A/S	710	2,238	15,940	1,376	11.6	44.6	26.6	67%
2023	not published	35	111	515	53	9.8	68.2	79.6	39%
2022	not published	749	2,374	14,090	1,396	10.1	53.2	21.2	–
2021	not published	673	2,159	12,483	1,123	11.1	54.0	24.6	–
2020	not published	756	2,425	13,232	1,310	10.1	57.2	23.1	–
2019	not published	2,220	6,964	39,162	4,497	8.7	56.7	26.9	–
2018	not published	1,525	4,803	21,161	3,910	5.4	72.1	50.6	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Chemical tanker median	vs Chemical tanker	Rank	Verifier	Methods
2025	Uni-Tankers A/S	34.4	15.0	+128%	1,231 of 1,460	ABS	B
2024	Uni-Tankers A/S	26.6	16.7	+59%	930 of 1,274	ABS	B
2023	not published	79.6	16.2	+390%	1,300 of 1,314	ABS	B
2022	not published	21.2	16.1	+32%	940 of 1,409	Bureau Veritas	B
2021	not published	24.6	16.7	+47%	966 of 1,343	Bureau Veritas	B
2020	not published	23.1	16.2	+43%	928 of 1,312	Bureau Veritas	B
2019	not published	26.9	17.3	+55%	992 of 1,321	Bureau Veritas	B
2018	not published	50.6	17.1	+195%	1,200 of 1,294	Bureau Veritas	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.