Navalyze · Ro-pax · Ship

ATHARA

IMO: 9263655
Type: Ro-pax ship
Port of registry: Cagliari
Technical efficiency: EEXI 24.95 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

236.9 kg/nm

Ro-pax median 150.2 kg/nm (+58%)

CO₂ per transport work (pax)

1,124

g CO₂/pax·nm · Ro-pax median 567 (+98%)

CO₂ per transport work (freight)

73.88

g CO₂/t·nm · Ro-pax median 253 (−71%)

Average speed

17.1 kn

Ro-pax median 15.8 kn (+8%)

Fuel per day at sea

97.4 t/day

Fuel consumed

16,452 t

CO₂ emitted

51,901 t

52,709 t CO₂eq incl. CH₄ and N₂O

Distance sailed

69,445 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,053 h

169 days, 46% 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 236.9 kg/nm · median 150.2 (+58%)

69.3Ranks 374 of 408, lowest first232.4

Average speedThis ship 17.1 kn · median 15.8 (+8%)

12.0Faster than 63% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 1,123.76 g CO₂/pax·nm · median 566.51 (+98%)

66.76Ranks 322 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 73.88 g CO₂/t·nm · median 253.18 (−71%)

48.59Ranks 64 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 ports87%
From the EU0%
Into the EU0%
At berth in the EU13%

80% of this ship's CO₂ falls under the EU ETS (41,660 t).

Fuel burned laden

–

Not reported

CO₂ at berth

12.8%

Alongside in EU ports

Methane (CH₄)

0.8 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

ATHARA
Ro-pax median

150.0200.0250.0300.0

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

Average speed, kn

ATHARA
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

ATHARA
Ro-pax median

0.0100200300

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

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

ATHARA
Ro-pax median

0.05001,0001,5002,000

’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	−0.6 kn	−8%	−11%	+11%	+13%	0.6 kn slower, fuel per mile down 8%; in line with the speed change.
2023→2024	−0.8 kn	+8%	+3%	−6%	−10%	0.8 kn slower, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−0.5 kn	−4%	−7%	−19%	+2%	0.5 kn slower, fuel per mile down 4%; in line with the speed change.
2021→2022	−1.3 kn	−1%	−7%	+70%	+8%	1.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+2.1 kn	+9%	+21%	−34%	−39%	2.1 kn faster, fuel per mile up 9%; better than speed alone explains (hull, engine or trade).
2019→2020	+1.0 kn	+4%	+10%	+9%	+57,225%	1.0 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2018→2019	−1.0 kn	−3%	−8%	−7%	−100%	1.0 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).

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	16,452	51,901	69,445	4,053	17.1	236.9	–	–
2024	Compagnia Italiana Di Navigazione	16,147	50,462	62,534	3,538	17.7	258.2	–	–
2023	not published	15,830	49,467	66,346	3,585	18.5	238.6	–	–
2022	not published	20,473	63,924	81,991	4,308	19.0	249.7	–	–
2021	not published	12,197	38,091	48,138	2,375	20.3	253.4	–	–
2020	not published	16,894	52,774	72,443	3,971	18.2	233.2	–	–
2019	not published	14,970	46,769	66,544	3,862	17.2	225.0	–	–
2018	not published	16,541	51,655	71,352	3,911	18.2	231.8	–	–

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	1,123.76	566.51	+98%	322 of 408	73.88	253.18	−71%	RINA	A
2024	Compagnia Italiana Di Navigazione	996.45	546.68	+82%	291 of 404	87.07	232.85	−63%	RINA	A
2023	not published	1,111.09	680.04	+63%	303 of 386	99.57	233.94	−57%	RINA	–
2022	not published	1,092.10	626.32	+74%	290 of 394	94.99	252.90	−62%	RINA	A
2021	not published	1,009.92	815.19	+24%	227 of 377	94.08	226.00	−58%	RINA	A
2020	not published	1,668.17	750.91	+122%	307 of 387	139.96	217.49	−36%	RINA	A
2019	not published	2.91	569.03	−99%	22 of 394	0.36	222.56	−100%	RINA	A
2018	not published	1,149.59	728.92	+58%	240 of 361	131.63	184.05	−28%	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.