Navalyze · Ro-pax · Ship

JANAS

IMO: 9222534
Type: Ro-pax ship
Flag (estimated): Italy
Port of registry: Cagliari
Technical efficiency: EEXI 25.08 g CO₂/t·nm

ISM company (DoC holder) in 2025: Compagnia Italiana Di Navigazione

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

226

Ro-pax median 153 kg/nm (+48%)

CO₂ per transport work (pax)

823

g CO₂/pax·nm · Ro-pax median 680 (+21%)

CO₂ per transport work (freight)

85.5

g CO₂/t·nm · Ro-pax median 234 (−63%)

Average speed

20.5 kn

Ro-pax median 16.0 kn (+28%)

Fuel per day at sea

111.4 t/day

Fuel consumed

18,067 t

CO₂ emitted

56,408 t

Distance sailed

79,827 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,893 h

162 days, 44% 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 243 kg/nm · median 150 (+62%)

69.3Ranks 383 of 408, lowest first232

Average speedThis ship 16.8 kn · median 15.8 (+6%)

12.0Faster than 60% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 983 g CO₂/pax·nm · median 567 (+73%)

66.8Ranks 297 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 91.4 g CO₂/t·nm · median 253 (−64%)

48.6Ranks 82 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 ports91%
From the EU0%
Into the EU0%
At berth in the EU9%

Fuel burned laden

–

Not reported

CO₂ at berth

5,201 t

9.2% 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

JANAS
Ro-pax median

150.0175.0200.0225.0250.0

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

Average speed, kn

JANAS
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

JANAS
Ro-pax median

50.0100150200250300

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

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

JANAS
Ro-pax median

5007501,0001,2501,500

’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%	−5%	−13%	−2%	0.5 kn slower, fuel per mile down 2%; in line with the speed change.
2023→2024	−3.2 kn	+10%	−8%	−20%	+22%	3.2 kn slower, fuel per mile up 10%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+2.2 kn	+2%	+14%	+33%	−12%	2.2 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	−0.5 kn	+3%	+1%	−10%	−11%	0.5 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.6 kn	+4%	+8%	−5%	−26%	0.6 kn faster, fuel per mile up 4%; in line with the speed change.
2019→2020	−0.4 kn	−6%	−8%	−18%	+20%	0.4 kn slower, fuel per mile down 6%; in line with the speed change.
2018→2019	+0.5 kn	+3%	+5%	+10%	−12%	0.5 kn faster, fuel per mile up 3%; 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	Compagnia Italiana Di Navigazione	13,385	42,343	55,183	3,290	16.8	243	–	–
2024	Compagnia Italiana Di Navigazione	15,759	49,230	63,540	3,673	17.3	248	–	–
2023	not published	18,067	56,408	79,827	3,893	20.5	226	–	–
2022	not published	13,386	41,852	60,175	3,294	18.3	222	–	–
2021	not published	14,399	44,986	67,015	3,567	18.8	215	–	–
2020	not published	14,620	45,679	70,834	3,902	18.2	206	–	–
2019	not published	18,985	59,283	86,348	4,643	18.6	220	–	–
2018	not published	16,801	52,487	78,379	4,324	18.1	214	–	–

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	Compagnia Italiana Di Navigazione	983	567	+73%	297 of 408	91.4	253	−64%	RINA	A
2024	Compagnia Italiana Di Navigazione	1,000	547	+83%	292 of 404	95.8	233	−59%	RINA	A
2023	not published	823	680	+21%	227 of 386	85.5	234	−63%	RINA	A
2022	not published	940	626	+50%	256 of 394	94.4	253	−63%	RINA	A
2021	not published	1,053	815	+29%	236 of 377	99.8	226	−56%	RINA	A
2020	not published	1,429	751	+90%	280 of 387	121	217	−44%	RINA	A
2019	not published	1,191	569	+109%	317 of 394	117	223	−47%	RINA	A
2018	not published	1,350	729	+85%	261 of 361	157	184	−14%	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.