Navalyze · Ro-pax · Ship

SUPERFAST XI

IMO: 9227417
Type: Ro-pax ship
Port of registry: Piraeus
Technical efficiency: EEXI 28.90 g CO₂/t·nm

ISM company (DoC holder) in 2025: SUPERFAST FERRIES S.A. · part of Attica Group

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

293.1 kg/nm

Ro-pax median 150.2 kg/nm (+95%)

CO₂ per transport work (pax)

42.79

g CO₂/pax·nm · Ro-pax median 567 (−92%)

CO₂ per transport work (freight)

388

g CO₂/t·nm · Ro-pax median 253 (+53%)

Average speed

22.3 kn

Ro-pax median 15.8 kn (+41%)

Fuel per day at sea

157.0 t/day

Fuel consumed

41,045 t

CO₂ emitted

127,344 t

129,359 t CO₂eq incl. CH₄ and N₂O

Distance sailed

140,031 nm

CO₂ ÷ CO₂ per mile

Time at sea

6,275 h

261 days, 72% 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 293.1 kg/nm · median 150.2 (+95%)

69.3Ranks 404 of 408, lowest first232.4

Average speedThis ship 22.3 kn · median 15.8 (+41%)

12.0Faster than 90% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 42.79 g CO₂/pax·nm · median 566.51 (−92%)

66.76Ranks 17 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 388.17 g CO₂/t·nm · median 253.18 (+53%)

48.59Ranks 244 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 ports98%
From the EU0%
Into the EU0%
At berth in the EU2%

96% of this ship's CO₂ falls under the EU ETS (122,052 t).

Fuel burned laden

–

Not reported

CO₂ at berth

2.3%

Alongside in EU ports

Methane (CH₄)

2.1 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

SUPERFAST XI
Ro-pax median

150.0200.0250.0300.0350.0

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

Average speed, kn

SUPERFAST XI
Ro-pax median

15.017.520.022.525.0

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

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

SUPERFAST XI
Ro-pax median

100200300400

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

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

SUPERFAST XI
Ro-pax median

0.02004006008001,000

’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	+3%	+2%	+18%	−84%	Same speed, fuel per mile up 3%; in line with the speed change.
2023→2024	−1.5 kn	−8%	−14%	−21%	−4%	1.5 kn slower, fuel per mile down 8%; in line with the speed change.
2022→2023	−0.3 kn	+3%	+2%	+35%	+8%	0.3 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.5 kn	−1%	+1%	−9%	−6%	0.5 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2020→2021	+0.1 kn	+1%	+1%	+44%	+5%	Same speed, fuel per mile flat.
2019→2020	−0.1 kn	+7%	+7%	−38%	+24%	Same speed, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.2 kn	−6%	−7%	−8%	−7%	Same speed, fuel per mile down 6%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	SUPERFAST FERRIES S.A.	41,045	127,344	140,031	6,275	22.3	293.1	–	–
2024	SUPERFAST FERRIES S.A.	33,832	105,445	118,978	5,280	22.5	284.4	–	–
2023	not published	46,477	145,052	149,745	6,238	24.0	310.4	–	–
2022	not published	33,351	103,876	110,730	4,564	24.3	301.2	–	–
2021	not published	37,070	115,470	121,764	5,112	23.8	304.4	–	–
2020	not published	25,519	79,597	84,603	3,572	23.7	301.6	–	–
2019	not published	38,471	120,551	136,507	5,737	23.8	281.8	–	–
2018	not published	44,834	140,372	149,075	6,224	24.0	300.8	–	–

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	SUPERFAST FERRIES S.A.	42.79	566.51	−92%	17 of 408	388.17	253.18	+53%	Verifavia	B
2024	SUPERFAST FERRIES S.A.	270.59	546.68	−51%	137 of 404	305.58	232.85	+31%	Verifavia	B
2023	not published	282.14	680.04	−59%	107 of 386	313.78	233.94	+34%	Verifavia	–
2022	not published	261.13	626.32	−58%	116 of 394	290.85	252.90	+15%	Verifavia	B
2021	not published	276.88	815.19	−66%	113 of 377	323.48	226.00	+43%	Verifavia	B
2020	not published	264.89	750.91	−65%	113 of 387	343.77	217.49	+58%	Verifavia	B
2019	not published	213.09	569.03	−63%	111 of 394	286.97	222.56	+29%	Verifavia	B
2018	not published	229.98	728.92	−68%	103 of 361	267.49	184.05	+45%	Verifavia	B

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.