Navalyze · Ro-pax · Ship

JANAS

IMO: 9222534
Type: Ro-pax ship
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

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

242.6 kg/nm

Ro-pax median 150.2 kg/nm (+62%)

CO₂ per transport work (pax)

983

g CO₂/pax·nm · Ro-pax median 567 (+73%)

CO₂ per transport work (freight)

91.41

g CO₂/t·nm · Ro-pax median 253 (−64%)

Average speed

16.8 kn

Ro-pax median 15.8 kn (+6%)

Fuel per day at sea

97.6 t/day

Fuel consumed

13,385 t

CO₂ emitted

42,343 t

43,001 t CO₂eq incl. CH₄ and N₂O

Distance sailed

55,183 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,290 h

137 days, 38% 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 242.6 kg/nm · median 150.2 (+62%)

69.3Ranks 383 of 408, lowest first232.4

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 982.75 g CO₂/pax·nm · median 566.51 (+73%)

66.76Ranks 297 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 91.41 g CO₂/t·nm · median 253.18 (−64%)

48.59Ranks 82 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 ports86%
From the EU0%
Into the EU0%
At berth in the EU14%

71% of this ship's CO₂ falls under the EU ETS (30,273 t).

Fuel burned laden

–

Not reported

CO₂ at berth

13.9%

Alongside in EU ports

Methane (CH₄)

0.7 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

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	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Compagnia Italiana Di Navigazione	13,385	42,343	55,183	3,290	16.8	242.6	–	–
2024	Compagnia Italiana Di Navigazione	15,759	49,230	63,540	3,673	17.3	248.0	–	–
2023	not published	18,067	56,408	79,827	3,893	20.5	226.3	–	–
2022	not published	13,386	41,852	60,175	3,294	18.3	222.4	–	–
2021	not published	14,399	44,986	67,015	3,567	18.8	214.9	–	–
2020	not published	14,620	45,679	70,834	3,902	18.2	206.4	–	–
2019	not published	18,985	59,283	86,348	4,643	18.6	219.9	–	–
2018	not published	16,801	52,487	78,379	4,324	18.1	214.3	–	–

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	Compagnia Italiana Di Navigazione	982.75	566.51	+73%	297 of 408	91.41	253.18	−64%	RINA	A
2024	Compagnia Italiana Di Navigazione	999.90	546.68	+83%	292 of 404	95.76	232.85	−59%	RINA	A
2023	not published	822.77	680.04	+21%	227 of 386	85.49	233.94	−63%	RINA	A
2022	not published	939.62	626.32	+50%	256 of 394	94.42	252.90	−63%	RINA	A
2021	not published	1,053.20	815.19	+29%	236 of 377	99.81	226.00	−56%	RINA	A
2020	not published	1,429.23	750.91	+90%	280 of 387	121.09	217.49	−44%	RINA	A
2019	not published	1,190.53	569.03	+109%	317 of 394	116.88	222.56	−47%	RINA	A
2018	not published	1,349.62	728.92	+85%	261 of 361	157.46	184.05	−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.