Navalyze · Ro-pax · Ship

ISLE OF INISHEER

IMO: 9181091
Type: Ro-pax ship
Flag (estimated): Cyprus
Port of registry: Limassol
Technical efficiency: EEXI 27.40 g CO₂/t·nm
Former names: ZURBARAN, CIUDAD DE MAHON

ISM company (DoC holder) in 2025: Matrix Ship Management LTD

Report year

2022 at a glance

From the 2022 THETIS-MRV report.

Fuel kg/nm

189

Ro-pax median 157 kg/nm (+20%)

CO₂ per transport work (pax)

57.4

g CO₂/pax·nm · Ro-pax median 626 (−91%)

CO₂ per transport work (freight)

536

g CO₂/t·nm · Ro-pax median 253 (+112%)

Average speed

14.6 kn

Ro-pax median 16.0 kn (−9%)

Fuel per day at sea

66.3 t/day

Fuel consumed

11,400 t

CO₂ emitted

36,470 t

Distance sailed

60,332 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,129 h

172 days, 47% 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 168 kg/nm · median 150 (+12%)

69.3Ranks 266 of 408, lowest first232

Average speedThis ship 18.2 kn · median 15.8 (+15%)

12.0Faster than 71% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 639 g CO₂/pax·nm · median 567 (+13%)

66.8Ranks 214 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 287 g CO₂/t·nm · median 253 (+13%)

48.6Ranks 215 of 408, lowest first1,247

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

Where the emissions happen, 2022

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 ports11%
From the EU40%
Into the EU40%
At berth in the EU9%

Fuel burned laden

–

Not reported

CO₂ at berth

3,184 t

8.7% 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

ISLE OF INISHEER
Ro-pax median

140.0160.0180.0200.0

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

Average speed, kn

ISLE OF INISHEER
Ro-pax median

12.014.016.018.020.0

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

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

ISLE OF INISHEER
Ro-pax median

0.0200400600

’182018’222022’232023’242024’252025

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

ISLE OF INISHEER
Ro-pax median

0.0200400600800

’182018’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+4.8 kn	−7%	+27%	+92%	+47%	4.8 kn faster, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.5 kn	−8%	−12%	−21%	−16%	0.5 kn slower, fuel per mile down 8%; in line with the speed change.
2022→2023	−0.7 kn	+4%	−1%	+18%	+797%	0.7 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2022	−3.1 kn	+5%	−13%	−18%	–	3.1 kn slower, fuel per mile up 5%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.4 kn	+6%	+4%	−11%	–	0.4 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.3 kn	−5%	−4%	−5%	–	0.3 kn faster, fuel per mile down 5%; 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	Matrix Ship Management LTD	18,077	56,783	107,601	5,926	18.2	168	–	–
2024	Matrix Ship Management LTD	10,069	31,685	56,005	4,182	13.4	180	–	–
2023	not published	13,989	44,260	71,330	5,127	13.9	196	–	–
2022	not published	11,400	36,470	60,332	4,129	14.6	189	–	–
2020	not published	13,142	41,002	73,288	4,142	17.7	179	–	–
2019	not published	13,913	43,405	82,196	4,541	18.1	169	–	–
2018	not published	15,438	48,161	86,667	4,859	17.8	178	–	–

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	Matrix Ship Management LTD	639	567	+13%	214 of 408	287	253	+13%	DNV	B+C
2024	Matrix Ship Management LTD	434	547	−21%	179 of 404	522	233	+124%	DNV	B+C
2023	not published	515	680	−24%	158 of 386	529	234	+126%	DNV	B+C
2022	not published	57.4	626	−91%	29 of 394	536	253	+112%	DNV	B+C
2020	not published	–	–	–	–	–	–	–	Lloyd's Register	B+C
2019	not published	–	–	–	–	–	–	–	Lloyd's Register	–
2018	not published	9.96	729	−99%	36 of 361	1.75	184	−99%	Lloyd's Register	–

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.