Navalyze · Ro-pax · Ship

ATHENA SEAWAYS

IMO: 9350680
Type: Ro-pax ship
Port of registry: Klaipeda
Technical efficiency: EEXI 27.89 g CO₂/t·nm

ISM company (DoC holder) in 2025: AB DFDS Seaways · part of DFDS

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

145.4 kg/nm

Ro-pax median 150.2 kg/nm (−3%)

CO₂ per transport work (pax)

3,594

g CO₂/pax·nm · Ro-pax median 567 (+534%)

CO₂ per transport work (freight)

61.28

g CO₂/t·nm · Ro-pax median 253 (−76%)

Average speed

19.9 kn

Ro-pax median 15.8 kn (+26%)

Fuel per day at sea

69.4 t/day

Fuel consumed

15,413 t

CO₂ emitted

48,153 t

48,910 t CO₂eq incl. CH₄ and N₂O

Distance sailed

106,029 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,334 h

222 days, 61% of the year

Within the ro-pax fleet, 2025

Set against all 408 ro-pax 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 145.4 kg/nm · median 150.2 (−3%)

69.3Ranks 183 of 408, lowest first232.4

Average speedThis ship 19.9 kn · median 15.8 (+26%)

12.0Faster than 83% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 3,593.67 g CO₂/pax·nm · median 566.51 (+534%)

66.76Ranks 399 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 61.28 g CO₂/t·nm · median 253.18 (−76%)

48.59Ranks 48 of 408, lowest first1,247.19

Middle 80% of shipsMiddle 50%Ro-pax 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 ports96%
From the EU0%
Into the EU0%
At berth in the EU4%

100% of this ship's CO₂ falls under the EU ETS (48,153 t).

Fuel burned laden

–

Not reported

CO₂ at berth

4.5%

Alongside in EU ports

Methane (CH₄)

0.8 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 Ro-pax median is the middle ship of all ro-pax ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

ATHENA SEAWAYS
Ro-pax median

130.0140.0150.0160.0

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

Average speed, kn

ATHENA SEAWAYS
Ro-pax median

14.016.018.020.0

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

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

ATHENA SEAWAYS
Ro-pax median

50.0100150200250300

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

CO₂ per transport work (pax), g CO₂/pax·nm

ATHENA SEAWAYS
Ro-pax median

0.01,0002,0003,0004,000

’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	+0.2 kn	−4%	−3%	−7%	+118%	Same speed, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.2 kn	+7%	+6%	−13%	+85%	Same speed, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.4 kn	+0%	+2%	−1%	+9%	0.4 kn faster, fuel per mile flat.
2021→2022	+0.2 kn	−2%	−1%	+22%	−3%	Same speed, fuel per mile flat.
2020→2021	+0.8 kn	−0%	+4%	+14%	−5%	0.8 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2019→2020	−0.5 kn	−3%	−6%	−16%	+15%	0.5 kn slower, fuel per mile down 3%; in line with the speed change.
2018→2019	+1.3 kn	+9%	+16%	+24%	−61%	1.3 kn faster, fuel per mile up 9%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	AB DFDS Seaways	15,413	48,153	106,029	5,334	19.9	145.4	–	–
2024	AB DFDS Seaways	17,301	54,034	114,460	5,796	19.7	151.2	–	–
2023	not published	18,565	57,968	131,521	6,593	19.9	141.2	–	–
2022	not published	18,687	58,344	132,617	6,794	19.5	140.9	–	–
2021	not published	15,582	48,678	108,499	5,620	19.3	143.6	–	–
2020	not published	13,645	42,511	94,860	5,140	18.5	143.8	–	–
2019	not published	16,833	52,436	113,463	5,976	19.0	148.3	–	–
2018	not published	12,510	38,980	91,605	5,171	17.7	136.6	144.69	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Ro-pax median	vs Ro-pax	Rank	Freight, g CO₂/t·nm	Ro-pax median	vs Ro-pax	Verifier	Methods
2025	AB DFDS Seaways	3,593.67	566.51	+534%	399 of 408	61.28	253.18	−76%	DNV	B
2024	AB DFDS Seaways	1,646.59	546.68	+201%	355 of 404	127.05	232.85	−45%	DNV	C
2023	not published	892.08	680.04	+31%	241 of 386	90.95	233.94	−61%	DNV	C
2022	not published	817.17	626.32	+30%	231 of 394	78.65	252.90	−69%	DNV	C
2021	not published	840.17	815.19	+3%	192 of 377	95.08	226.00	−58%	Verifavia	B+C
2020	not published	880.05	750.91	+17%	209 of 387	92.72	217.49	−57%	Verifavia	B+C
2019	not published	765.94	569.03	+35%	235 of 394	89.24	222.56	−60%	Verifavia	B+C
2018	not published	1,959.88	728.92	+169%	301 of 361	–	–	–	Verifavia	B+C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Ro-pax ships are benchmarked on CO₂ per transport work (pax) (TW), in g CO₂/pax·nm, and also per tonne of freight (g CO₂/t·nm freight). CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's ro-pax 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.