Navalyze · Ro-pax · Ship

ZEUS PALACE

IMO: 9208071
Type: Ro-pax ship
Flag (estimated): Italy
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

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

196

Ro-pax median 153 kg/nm (+28%)

CO₂ per transport work (pax)

814

g CO₂/pax·nm · Ro-pax median 680 (+20%)

CO₂ per transport work (freight)

103

g CO₂/t·nm · Ro-pax median 234 (−56%)

Average speed

19.8 kn

Ro-pax median 16.0 kn (+24%)

Fuel per day at sea

93.0 t/day

Fuel consumed

21,863 t

CO₂ emitted

68,261 t

Distance sailed

111,718 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,642 h

235 days, 64% 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 188 kg/nm · median 150 (+25%)

69.3Ranks 313 of 408, lowest first232

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 755 g CO₂/pax·nm · median 567 (+33%)

66.8Ranks 250 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 117 g CO₂/t·nm · median 253 (−54%)

48.6Ranks 110 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 ports95%
From the EU0%
Into the EU0%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

3,174 t

4.7% 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

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	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	GRIMALDI EUROMED S.p.A	18,281	57,088	97,021	5,287	18.4	188	–	–
2024	GRIMALDI EUROMED S.p.A	17,940	56,021	99,137	6,953	14.3	181	–	–
2023	not published	21,863	68,261	111,718	5,642	19.8	196	–	–
2022	not published	23,249	72,598	109,967	5,680	19.4	211	–	–
2021	not published	29,691	92,685	125,238	5,427	23.1	237	–	–
2020	not published	21,986	68,600	102,160	4,775	21.4	215	–	–
2019	not published	19,677	61,484	104,528	5,024	20.8	188	–	–
2018	not published	16,062	50,679	86,682	4,245	20.4	185	–	–

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	755	567	+33%	250 of 408	117	253	−54%	RINA	A
2024	GRIMALDI EUROMED S.p.A	752	547	+38%	248 of 404	112	233	−52%	RINA	A
2023	not published	814	680	+20%	226 of 386	103	234	−56%	RINA	A
2022	not published	1,275	626	+104%	327 of 394	105	253	−58%	RINA	A
2021	not published	3,691	815	+353%	361 of 377	81.3	226	−64%	RINA	A
2020	not published	2,054	751	+174%	331 of 387	88.4	217	−59%	RINA	A
2019	not published	968	569	+70%	280 of 394	75.6	223	−66%	RINA	A
2018	not published	1,081	729	+48%	234 of 361	87.1	184	−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.