Navalyze · Ro-ro · Ship

IOSIF K

IMO: 7724265
Type: Ro-ro ship
Average cargo carried: 575 t
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EIV 51.54 g CO₂/t·nm

ISM company (DoC holder) in 2025: Creta Cargo C. Maritime Company

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 575 t of cargo on average.

Fuel kg/nm

57.8

Ro-ro median 105 kg/nm (−45%)

CO₂ per transport work (cargo)

317

g CO₂/t·nm · Ro-ro median 95.2 (+233%)

Average speed

12.6 kn

Ro-ro median 14.4 kn (−13%)

Fuel per day at sea

17.5 t/day

Fuel consumed

1,238 t

CO₂ emitted

3,911 t

3,972 t CO₂eq incl. CH₄ and N₂O

Distance sailed

21,434 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,695 h

71 days, 19% 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 57.8 kg/nm · median 105 (−45%)

56.6Ranks 25 of 235, lowest first145

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

10.9Faster than 25% of ro-ro ships17.0

CO₂ per transport work (cargo)This ship 317 g CO₂/t·nm · median 95.2 (+233%)

47.4Ranks 214 of 235, lowest first297

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

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports97%
From the EU0%
Into the EU0%
At berth in the EU3%

89% of this ship's CO₂ falls under the EU ETS (3,469 t).

Fuel burned laden

–

Not reported

CO₂ at berth

120 t

3.1% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+61 t

+1.6% CO₂eq on top of CO₂ alone, from CH₄ and N₂O; counted in full from 2026

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

IOSIF K
Ro-ro median

40.060.080.0100.0120.0

’202020’212021’222022’232023’242024’252025

Average speed, kn

IOSIF K
Ro-ro median

12.013.014.015.0

’202020’212021’222022’232023’242024’252025

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

IOSIF K
Ro-ro median

0.0200400600800

’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	−17%	−18%	−22%	−16%	Same speed, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.5 kn	+0%	+4%	−44%	+1%	0.5 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2022→2023	−0.5 kn	−1%	−5%	+5%	+9%	0.5 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.4 kn	−15%	−13%	−19%	−31%	0.4 kn faster, fuel per mile down 15%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.6 kn	+4%	−0%	+261%	−19%	0.6 kn slower, fuel per mile up 4%; 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	Creta Cargo C. Maritime Company	1,238	3,911	21,434	1,695	12.6	57.8	317	–
2024	Creta Cargo IV Maritime Company	1,916	6,143	27,474	2,159	12.7	69.7	379	–
2023	not published	3,434	11,009	49,236	4,046	12.2	69.7	375	–
2022	not published	3,283	10,526	46,707	3,679	12.7	70.3	345	–
2021	not published	4,806	15,407	57,959	4,710	12.3	82.9	502	–
2020	not published	1,276	4,090	16,054	1,245	12.9	79.5	617	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2025	Creta Cargo C. Maritime Company	317	95.2	+233%	214 of 235	EMICERT	A
2024	Creta Cargo IV Maritime Company	379	97.5	+288%	207 of 220	EMICERT	A
2023	not published	375	109	+245%	201 of 221	EMICERT	A
2022	not published	345	90.6	+281%	207 of 223	EMICERT	A
2021	not published	502	104	+384%	213 of 219	Verifavia	A
2020	not published	617	103	+500%	231 of 238	Verifavia	A

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.