Navalyze · Ro-pax · Ship

KNOSSOS PALACE

IMO: 9220330
Type: Ro-pax ship
Flag (estimated): Greece
Port of registry: Heraklion
Technical efficiency: EEXI 22.77 g CO₂/t·nm
Former names: CRUISE BONARIA

ISM company (DoC holder) in 2025: MINOAN LINES SHIPPING S.A. · part of Grimaldi Group

Report year

2022 at a glance

From the 2022 THETIS-MRV report.

Fuel kg/nm

248

Ro-pax median 157 kg/nm (+58%)

CO₂ per transport work (pax)

830

g CO₂/pax·nm · Ro-pax median 626 (+32%)

CO₂ per transport work (freight)

47.5

g CO₂/t·nm · Ro-pax median 253 (−81%)

Average speed

20.1 kn

Ro-pax median 16.0 kn (+26%)

Fuel per day at sea

119.3 t/day

Fuel consumed

16,904 t

CO₂ emitted

52,805 t

Distance sailed

68,221 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,400 h

142 days, 39% 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 263 kg/nm · median 150 (+75%)

69.3Ranks 394 of 408, lowest first232

Average speedThis ship 21.5 kn · median 15.8 (+36%)

12.0Faster than 87% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 738 g CO₂/pax·nm · median 567 (+30%)

66.8Ranks 245 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 71.0 g CO₂/t·nm · median 253 (−72%)

48.6Ranks 59 of 408, lowest first1,247

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

Where the emissions happen, 2022

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 ports89%
From the EU0%
Into the EU0%
At berth in the EU11%

Fuel burned laden

–

Not reported

CO₂ at berth

5,724 t

10.8% 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

KNOSSOS PALACE
Ro-pax median

150.0200.0250.0300.0

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

Average speed, kn

KNOSSOS PALACE
Ro-pax median

14.016.018.020.022.0

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

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

KNOSSOS PALACE
Ro-pax median

0.0100200300

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

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

KNOSSOS PALACE
Ro-pax median

5001,0001,5002,0002,500

’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	−0.5 kn	+2%	−0%	+6%	+8%	0.5 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+2.2 kn	+12%	+24%	+2%	+5%	2.2 kn faster, fuel per mile up 12%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.3 kn	−7%	−8%	+3%	−21%	0.3 kn slower, fuel per mile down 7%; in line with the speed change.
2021→2022	−0.6 kn	−3%	−6%	−7%	−30%	0.6 kn slower, fuel per mile down 3%; in line with the speed change.
2020→2021	+0.1 kn	+9%	+9%	−11%	−45%	Same speed, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.9 kn	+3%	−1%	+29%	+122%	0.9 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.1 kn	−1%	+0%	−32%	+1%	Same speed, 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	MINOAN LINES SHIPPING S.A.	20,078	62,864	76,454	3,551	21.5	263	–	–
2024	MINOAN LINES SHIPPING S.A.	18,563	57,971	72,014	3,274	22.0	258	–	–
2023	not published	16,159	50,478	70,322	3,544	19.8	230	–	–
2022	not published	16,904	52,805	68,221	3,400	20.1	248	–	–
2021	not published	18,666	58,395	73,055	3,536	20.7	256	–	–
2020	not published	19,202	60,071	81,873	3,971	20.6	235	–	–
2019	not published	14,405	45,446	63,335	2,940	21.5	227	–	–
2018	not published	21,387	67,487	93,424	4,366	21.4	229	–	–

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	MINOAN LINES SHIPPING S.A.	738	567	+30%	245 of 408	71.0	253	−72%	RINA	B
2024	MINOAN LINES SHIPPING S.A.	684	547	+25%	229 of 404	49.1	233	−79%	RINA	B
2023	not published	654	680	−4%	187 of 386	42.4	234	−82%	RINA	A
2022	not published	830	626	+32%	236 of 394	47.5	253	−81%	RINA	A
2021	not published	1,180	815	+45%	263 of 377	45.7	226	−80%	RINA	A
2020	not published	2,142	751	+185%	339 of 387	102	217	−53%	RINA	A
2019	not published	963	569	+69%	279 of 394	69.3	223	−69%	RINA	A
2018	not published	957	729	+31%	219 of 361	62.3	184	−66%	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.