Navalyze · Ro-pax · Ship

LA SUPREMA

IMO: 9214288
Type: Ro-pax ship
Flag (estimated): Italy
Port of registry: Palermo
Technical efficiency: EIV 30.63 g CO₂/t·nm

ISM company (DoC holder) in 2025: Grandi Navi Veloci Spa

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

304

Ro-pax median 153 kg/nm (+98%)

CO₂ per transport work (pax)

1,086

g CO₂/pax·nm · Ro-pax median 680 (+60%)

CO₂ per transport work (freight)

90.0

g CO₂/t·nm · Ro-pax median 234 (−62%)

Average speed

22.2 kn

Ro-pax median 16.0 kn (+39%)

Fuel per day at sea

162.1 t/day

Fuel consumed

35,012 t

CO₂ emitted

109,112 t

Distance sailed

115,328 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,184 h

216 days, 59% 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 kg/nmThis ship 315 kg/nm · median 150 (+110%)

69.3Ranks 407 of 408, lowest first232

Average speedThis ship 21.7 kn · median 15.8 (+37%)

12.0Faster than 88% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 1,093 g CO₂/pax·nm · median 567 (+93%)

66.8Ranks 319 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 0.13 g CO₂/t·nm · median 253 (−100%)

48.6Ranks 10 of 408, lowest first1,247

Middle 80% of shipsMiddle 50%Ro-pax medianThis ship

Where the emissions happen, 2023

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 ports66%
From the EU15%
Into the EU14%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

5,445 t

5.0% 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 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 kg/nm

LA SUPREMA
Ro-pax median

150.0200.0250.0300.0350.0

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

Average speed, kn

LA SUPREMA
Ro-pax median

14.016.018.020.022.024.0

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

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

LA SUPREMA
Ro-pax median

0.0100200300

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

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

LA SUPREMA
Ro-pax median

0.05001,0001,500

’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	−0.1 kn	−2%	−2%	+9%	+63,082%	Same speed, fuel per mile flat.
2023→2024	−0.4 kn	+6%	+4%	−11%	−100%	0.4 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.4 kn	+10%	+12%	+0%	+4%	0.4 kn faster, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.3 kn	−0%	−2%	+43%	−13%	0.3 kn slower, fuel per mile flat.
2020→2021	+0.4 kn	+14%	+16%	−26%	−19%	0.4 kn faster, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.3 kn	−2%	−4%	−18%	+45%	0.3 kn slower, fuel per mile down 2%; in line with the speed change.
2018→2019	+0.0 kn	−4%	−4%	+46%	+17%	Same speed, fuel per mile down 4%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	Grandi Navi Veloci Spa	35,237	109,805	111,793	5,142	21.7	315	–	–
2024	Grandi Navi Veloci Spa	32,937	102,677	102,547	4,701	21.8	321	–	–
2023	not published	35,012	109,112	115,328	5,184	22.2	304	–	–
2022	not published	31,725	98,913	114,878	5,274	21.8	276	–	–
2021	not published	22,275	70,273	80,314	3,631	22.1	277	–	–
2020	not published	26,503	82,658	108,601	5,015	21.7	244	–	–
2019	not published	32,934	102,720	131,816	5,994	22.0	250	–	–
2018	not published	23,650	73,743	90,522	4,115	22.0	261	–	–

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	Grandi Navi Veloci Spa	1,093	567	+93%	319 of 408	0.13	253	−100%	RINA	A+B
2024	Grandi Navi Veloci Spa	1.73	547	−100%	13 of 404	1.73	233	−99%	RINA	A+B
2023	not published	1,086	680	+60%	297 of 386	90.0	234	−62%	RINA	A+B
2022	not published	1,040	626	+66%	272 of 394	75.2	253	−70%	RINA	A+B
2021	not published	1,190	815	+46%	265 of 377	62.9	226	−72%	RINA	A+B
2020	not published	1,465	751	+95%	284 of 387	64.4	217	−70%	RINA	A+B
2019	not published	1,009	569	+77%	290 of 394	57.5	223	−74%	RINA	A+B
2018	not published	865	729	+19%	203 of 361	65.1	184	−65%	RINA	A+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.