Navalyze · Ro-pax · Ship

CARTHAGE

IMO: 9185396
Type: Ro-pax ship
Flag (estimated): Tunisia
Port of registry: La Goulette
Technical efficiency: EIV 5.22 g CO₂/t·nm
Ice class: IB

ISM company (DoC holder) in 2025: COTUNAV

Report year

2021 at a glance

From the 2021 THETIS-MRV report.

Fuel kg/nm

237

Ro-pax median 155 kg/nm (+53%)

CO₂ per transport work (pax)

920

g CO₂/pax·nm · Ro-pax median 815 (+13%)

CO₂ per transport work (freight)

1,756

g CO₂/t·nm · Ro-pax median 226 (+677%)

Average speed

20.7 kn

Ro-pax median 16.2 kn (+28%)

Fuel per day at sea

117.6 t/day

Fuel consumed

18,231 t

CO₂ emitted

56,801 t

Distance sailed

76,949 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,719 h

155 days, 42% 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 210 kg/nm · median 150 (+40%)

69.3Ranks 349 of 408, lowest first232

Average speedThis ship 19.6 kn · median 15.8 (+24%)

12.0Faster than 82% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 805 g CO₂/pax·nm · median 567 (+42%)

66.8Ranks 260 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 3,331 g CO₂/t·nm · median 253 (+1,216%)

48.6Ranks 392 of 408, lowest first1,247

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

Where the emissions happen, 2021

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 ports0%
From the EU49%
Into the EU49%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

988 t

1.7% 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

CARTHAGE
Ro-pax median

150.0175.0200.0225.0250.0

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

Average speed, kn

CARTHAGE
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

CARTHAGE
Ro-pax median

0.01,0002,0003,0004,000

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

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

CARTHAGE
Ro-pax median

0.02,5005,0007,50010,000

’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	−0.1 kn	−1%	−1%	−26%	−4%	Same speed, fuel per mile flat.
2023→2024	+0.1 kn	−3%	−2%	−12%	−7%	Same speed, fuel per mile down 3%; in line with the speed change.
2022→2023	−1.2 kn	−4%	−10%	+12%	−9%	1.2 kn slower, fuel per mile down 4%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.1 kn	−4%	−3%	+13%	+7%	Same speed, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2020→2021	+0.1 kn	+1%	+2%	+15%	−35%	Same speed, fuel per mile flat.
2019→2020	+0.4 kn	+5%	+7%	−26%	+56%	0.4 kn faster, fuel per mile up 5%; in line with the speed change.
2018→2019	−0.7 kn	−4%	−7%	−8%	−91%	0.7 kn slower, fuel per mile down 4%; 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	COTUNAV	13,303	41,461	63,344	3,230	19.6	210	–	–
2024	COTUNAV	18,136	56,530	85,805	4,357	19.7	211	–	–
2023	not published	21,275	66,301	97,688	4,994	19.6	218	–	–
2022	not published	19,840	61,810	87,312	4,196	20.8	227	–	–
2021	not published	18,231	56,801	76,949	3,719	20.7	237	–	–
2020	not published	15,587	48,559	66,732	3,236	20.6	234	–	–
2019	not published	20,145	62,755	90,609	4,481	20.2	222	–	–
2018	not published	22,739	70,839	98,141	4,688	20.9	232	–	–

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	COTUNAV	805	567	+42%	260 of 408	3,331	253	+1,216%	Verifavia	C
2024	COTUNAV	836	547	+53%	264 of 404	1,512	233	+549%	Verifavia	C
2023	not published	899	680	+32%	242 of 386	1,274	234	+445%	Verifavia	C
2022	not published	984	626	+57%	263 of 394	945	253	+274%	Verifavia	C
2021	not published	920	815	+13%	201 of 377	1,756	226	+677%	Verifavia	C
2020	not published	1,411	751	+88%	275 of 387	991	217	+356%	Verifavia	C
2019	not published	905	569	+59%	262 of 394	1,162	223	+422%	Verifavia	B+C
2018	not published	9,765	729	+1,240%	358 of 361	1,119	184	+508%	Verifavia	B+C

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.