Navalyze · Ro-ro · Ship

CATHERINE

IMO: 9209453
Type: Ro-ro ship
Average cargo carried: 3,397 t
Flag (estimated): Malta
Port of registry: Valletta
Technical efficiency: EEXI 13.25 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: CLDN RORO S.A. · part of CLdN

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 4,933 t of cargo on average.

Fuel kg/nm

387

Ro-ro median 108 kg/nm (+258%)

CO₂ per transport work (cargo)

247

g CO₂/t·nm · Ro-ro median 91.0 (+171%)

Average speed

11.7 kn

Ro-ro median 14.7 kn (−20%)

Fuel per day at sea

108.4 t/day

Fuel consumed

28,533 t

CO₂ emitted

89,723 t

Distance sailed

73,715 nm

CO₂ ÷ CO₂ per mile

Time at sea

6,317 h

263 days, 72% 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 97.7 kg/nm · median 105 (−7%)

56.6Ranks 97 of 235, lowest first145

Average speedThis ship 12.6 kn · median 14.4 (−13%)

10.9Faster than 24% of ro-ro ships17.0

CO₂ per transport work (cargo)This ship 90.3 g CO₂/t·nm · median 95.2 (−5%)

47.4Ranks 111 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 ports98%
From the EU0%
Into the EU0%
At berth in the EU1%

Fuel burned laden

–

Not reported

CO₂ at berth

1,131 t

1.3% 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

CATHERINE
Ro-ro median

0.0100.0200.0300.0400.0

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

Average speed, kn

CATHERINE
Ro-ro median

11.012.013.014.015.0

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

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

CATHERINE
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	−1.9 kn	+0%	−13%	−38%	+7%	1.9 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+0.1 kn	+1%	+2%	+2%	−13%	Same speed, fuel per mile flat.
2022→2023	+0.6 kn	−8%	−4%	+19%	+32%	0.6 kn faster, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.2 kn	−1%	−3%	−14%	+9%	Same speed, fuel per mile flat.
2020→2021	+1.2 kn	−4%	+5%	+44%	−10%	1.2 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2019→2020	−1.4 kn	+3%	−6%	−28%	+1%	1.4 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+2.5 kn	−72%	−66%	+17%	−70%	2.5 kn faster, fuel per mile down 72%; better than speed alone explains (hull, engine 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	CLDN RORO S.A.	5,567	17,487	57,000	4,537	12.6	97.7	90.3	–
2024	CLDN RORO S.A.	8,931	28,020	91,790	6,329	14.5	97.3	84.5	–
2023	not published	8,740	27,438	90,349	6,294	14.4	96.7	97.0	–
2022	not published	8,012	25,180	76,220	5,522	13.8	105	73.4	–
2021	not published	9,500	29,769	89,010	6,354	14.0	107	67.1	–
2020	not published	6,886	21,614	61,901	4,823	12.8	111	74.5	–
2019	not published	9,258	29,069	86,088	6,079	14.2	108	73.9	–
2018	not published	28,533	89,723	73,715	6,317	11.7	387	247	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2025	CLDN RORO S.A.	90.3	95.2	−5%	111 of 235	DNV	A+C
2024	CLDN RORO S.A.	84.5	97.5	−13%	89 of 220	DNV	A+C
2023	not published	97.0	109	−11%	100 of 221	DNV	A+C
2022	not published	73.4	90.6	−19%	73 of 223	DNV	C
2021	not published	67.1	104	−35%	54 of 219	DNV	C
2020	not published	74.5	103	−27%	70 of 238	DNV	C
2019	not published	73.9	90.9	−19%	82 of 271	DNV	C
2018	not published	247	91.0	+171%	229 of 260	DNV	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.