Navalyze · Ro-ro · Ship

ULYSSE

IMO: 9142459
Type: Ro-ro ship
Average cargo carried: 1,723 t
Flag (estimated): Tunisia
Port of registry: La Goulette
Technical efficiency: EIV 20.09 g CO₂/t·nm

ISM company (DoC holder) in 2025: COTUNAV

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 1,912 t of cargo on average.

Fuel kg/nm

122

Ro-ro median 108 kg/nm (+13%)

CO₂ per transport work (cargo)

199

g CO₂/t·nm · Ro-ro median 91.0 (+119%)

Average speed

16.3 kn

Ro-ro median 14.7 kn (+11%)

Fuel per day at sea

47.9 t/day

Fuel consumed

7,774 t

CO₂ emitted

24,232 t

Distance sailed

63,569 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,893 h

162 days, 44% of the year

Within the ro-ro fleet, 2025

Set against all 235 ro-ro 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 116 kg/nm · median 105 (+11%)

56.6Ranks 144 of 235, lowest first145

Average speedThis ship 15.5 kn · median 14.4 (+8%)

10.9Faster than 68% of ro-ro ships17.0

CO₂ per transport work (cargo)This ship 211 g CO₂/t·nm · median 95.2 (+122%)

47.4Ranks 184 of 235, lowest first297

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

Where the emissions happen, 2018

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 EU50%
Into the EU47%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

671 t

2.8% 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-ro median is the middle ship of all ro-ro ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

ULYSSE
Ro-ro median

100.0110.0120.0130.0

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

Average speed, kn

ULYSSE
Ro-ro median

14.014.515.015.516.016.5

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

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

ULYSSE
Ro-ro median

50.0100150200250

’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	+0.0 kn	+8%	+8%	−51%	−4%	Same speed, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.7 kn	−3%	−7%	−2%	+3%	0.7 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.1 kn	+2%	+9%	+18%	+13%	1.1 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	−0.6 kn	−1%	−5%	−9%	−4%	0.6 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.3 kn	+0%	+2%	+2%	+1%	Same speed, fuel per mile flat.
2019→2020	+1.1 kn	−13%	−6%	+3,608%	+13%	1.1 kn faster, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2018→2019	−2.0 kn	+3%	−10%	−97%	−13%	2.0 kn slower, fuel per mile up 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	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	4,298	13,531	37,129	2,391	15.5	116	211	–
2024	COTUNAV	8,101	25,257	75,521	4,886	15.5	107	221	–
2023	not published	8,584	26,755	77,404	4,788	16.2	111	214	97%
2022	not published	7,146	22,277	65,588	4,349	15.1	109	189	98%
2021	not published	7,942	24,775	72,354	4,611	15.7	110	197	97%
2020	not published	7,759	24,235	70,665	4,601	15.4	110	196	–
2019	not published	240	750	1,906	134	14.3	126	173	92%
2018	not published	7,774	24,232	63,569	3,893	16.3	122	199	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2025	COTUNAV	211	95.2	+122%	184 of 235	Verifavia	C
2024	COTUNAV	221	97.5	+127%	179 of 220	Verifavia	C
2023	not published	214	109	+97%	174 of 221	Verifavia	C
2022	not published	189	90.6	+109%	178 of 223	Verifavia	C
2021	not published	197	104	+90%	172 of 219	Verifavia	C
2020	not published	196	103	+91%	182 of 238	Verifavia	B+C
2019	not published	173	90.9	+90%	212 of 271	Verifavia	B+C
2018	not published	199	91.0	+119%	218 of 260	Verifavia	B+C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Ro-ro ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. 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-ro 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.