Navalyze · Ro-pax · Ship

ISLE OF INISHEER

IMO: 9181091
Type: Ro-pax ship
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

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

168.0 kg/nm

Ro-pax median 150.2 kg/nm (+12%)

CO₂ per transport work (pax)

639

g CO₂/pax·nm · Ro-pax median 567 (+13%)

CO₂ per transport work (freight)

287

g CO₂/t·nm · Ro-pax median 253 (+13%)

Average speed

18.2 kn

Ro-pax median 15.8 kn (+15%)

Fuel per day at sea

73.2 t/day

Fuel consumed

18,077 t

CO₂ emitted

56,783 t

57,671 t CO₂eq incl. CH₄ and N₂O

Distance sailed

107,601 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,926 h

247 days, 68% 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 168.0 kg/nm · median 150.2 (+12%)

69.3Ranks 266 of 408, lowest first232.4

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 639.20 g CO₂/pax·nm · median 566.51 (+13%)

66.76Ranks 214 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 286.86 g CO₂/t·nm · median 253.18 (+13%)

48.59Ranks 215 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 ports83%
From the EU7%
Into the EU7%
At berth in the EU3%

81% of this ship's CO₂ falls under the EU ETS (46,246 t).

Fuel burned laden

–

Not reported

CO₂ at berth

3.1%

Alongside in EU ports

Methane (CH₄)

0.9 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

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	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Matrix Ship Management LTD	18,077	56,783	107,601	5,926	18.2	168.0	–	–
2024	Matrix Ship Management LTD	10,069	31,685	56,005	4,182	13.4	179.8	–	–
2023	not published	13,989	44,260	71,330	5,127	13.9	196.1	–	–
2022	not published	11,400	36,470	60,332	4,129	14.6	188.9	–	–
2020	not published	13,142	41,002	73,288	4,142	17.7	179.3	–	–
2019	not published	13,913	43,405	82,196	4,541	18.1	169.3	–	–
2018	not published	15,438	48,161	86,667	4,859	17.8	178.1	–	–

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	639.20	566.51	+13%	214 of 408	286.86	253.18	+13%	DNV	B+C
2024	Matrix Ship Management LTD	434.08	546.68	−21%	179 of 404	521.79	232.85	+124%	DNV	B+C
2023	not published	514.65	680.04	−24%	158 of 386	529.21	233.94	+126%	DNV	B+C
2022	not published	57.40	626.32	−91%	29 of 394	535.56	252.90	+112%	DNV	B+C
2020	not published	–	–	–	–	–	–	–	Lloyd's Register	B+C
2019	not published	–	–	–	–	–	–	–	Lloyd's Register	–
2018	not published	9.96	728.92	−99%	36 of 361	1.75	184.05	−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.