Navalyze · Ro-pax · Ship

ZEUS PALACE

IMO: 9208071
Type: Ro-pax ship
Port of registry: Palermo
Technical efficiency: EIV 21.16 g CO₂/t·nm

ISM company (DoC holder) in 2025: GRIMALDI EUROMED S.p.A · part of Grimaldi Group

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

188.4 kg/nm

Ro-pax median 150.2 kg/nm (+25%)

CO₂ per transport work (pax)

755

g CO₂/pax·nm · Ro-pax median 567 (+33%)

CO₂ per transport work (freight)

117

g CO₂/t·nm · Ro-pax median 253 (−54%)

Average speed

18.4 kn

Ro-pax median 15.8 kn (+16%)

Fuel per day at sea

83.0 t/day

Fuel consumed

18,281 t

CO₂ emitted

57,088 t

57,986 t CO₂eq incl. CH₄ and N₂O

Distance sailed

97,021 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,287 h

220 days, 60% 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 188.4 kg/nm · median 150.2 (+25%)

69.3Ranks 313 of 408, lowest first232.4

Average speedThis ship 18.4 kn · median 15.8 (+16%)

12.0Faster than 72% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 754.64 g CO₂/pax·nm · median 566.51 (+33%)

66.76Ranks 250 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 117.22 g CO₂/t·nm · median 253.18 (−54%)

48.59Ranks 110 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 ports88%
From the EU2%
Into the EU2%
At berth in the EU8%

98% of this ship's CO₂ falls under the EU ETS (55,867 t).

Fuel burned laden

–

Not reported

CO₂ at berth

7.5%

Alongside in EU ports

Methane (CH₄)

0.9 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

ZEUS PALACE
Ro-pax median

150.0175.0200.0225.0250.0

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

Average speed, kn

ZEUS PALACE
Ro-pax median

12.515.017.520.022.525.0

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

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

ZEUS PALACE
Ro-pax median

50.0100150200250300

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

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

ZEUS PALACE
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	+4.1 kn	+4%	+34%	−2%	+0%	4.1 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2023→2024	−5.5 kn	−8%	−33%	−11%	−8%	5.5 kn slower, fuel per mile down 8%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.4 kn	−7%	−5%	+2%	−36%	0.4 kn faster, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).
2021→2022	−3.7 kn	−11%	−25%	−12%	−65%	3.7 kn slower, fuel per mile down 11%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.7 kn	+10%	+19%	+23%	+80%	1.7 kn faster, fuel per mile up 10%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.6 kn	+14%	+18%	−2%	+112%	0.6 kn faster, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.4 kn	+2%	+4%	+21%	−10%	0.4 kn faster, fuel per mile flat.

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	GRIMALDI EUROMED S.p.A	18,281	57,088	97,021	5,287	18.4	188.4	–	–
2024	GRIMALDI EUROMED S.p.A	17,940	56,021	99,137	6,953	14.3	181.0	–	–
2023	not published	21,863	68,261	111,718	5,642	19.8	195.7	–	–
2022	not published	23,249	72,598	109,967	5,680	19.4	211.4	–	–
2021	not published	29,691	92,685	125,238	5,427	23.1	237.1	–	–
2020	not published	21,986	68,600	102,160	4,775	21.4	215.2	–	–
2019	not published	19,677	61,484	104,528	5,024	20.8	188.2	–	–
2018	not published	16,062	50,679	86,682	4,245	20.4	185.3	–	–

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	GRIMALDI EUROMED S.p.A	754.64	566.51	+33%	250 of 408	117.22	253.18	−54%	RINA	A
2024	GRIMALDI EUROMED S.p.A	752.45	546.68	+38%	248 of 404	112.12	232.85	−52%	RINA	A
2023	not published	813.82	680.04	+20%	226 of 386	103.14	233.94	−56%	RINA	A
2022	not published	1,274.64	626.32	+104%	327 of 394	105.27	252.90	−58%	RINA	A
2021	not published	3,691.37	815.19	+353%	361 of 377	81.25	226.00	−64%	RINA	A
2020	not published	2,053.82	750.91	+174%	331 of 387	88.38	217.49	−59%	RINA	A
2019	not published	968.31	569.03	+70%	280 of 394	75.58	222.56	−66%	RINA	A
2018	not published	1,081.38	728.92	+48%	234 of 361	87.06	184.05	−53%	RINA	A

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.