Navalyze · Ro-ro · Ship

IOSIF K

IMO: 7724265
Type: Ro-ro ship
Average cargo carried: 575 t
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 per mile

57.8 kg/nm

Ro-ro median 104.6 kg/nm (−45%)

CO₂ per transport work (cargo)

317

g CO₂/t·nm · Ro-ro median 95.19 (+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 per mileThis ship 57.8 kg/nm · median 104.6 (−45%)

56.6Ranks 25 of 235, lowest first145.3

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 317.28 g CO₂/t·nm · median 95.19 (+233%)

47.35Ranks 214 of 235, lowest first297.27

Middle 80% of shipsMiddle 50%Ro-ro 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 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

3.1%

Alongside in EU ports

Methane (CH₄)

0.1 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-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 per mile, 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	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Creta Cargo C. Maritime Company	1,238	3,911	21,434	1,695	12.6	57.8	317.28	–
2024	Creta Cargo IV Maritime Company	1,916	6,143	27,474	2,159	12.7	69.7	378.86	–
2023	not published	3,434	11,009	49,236	4,046	12.2	69.7	374.53	–
2022	not published	3,283	10,526	46,707	3,679	12.7	70.3	345.04	–
2021	not published	4,806	15,407	57,959	4,710	12.3	82.9	502.06	–
2020	not published	1,276	4,090	16,054	1,245	12.9	79.5	616.66	–

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	317.28	95.19	+233%	214 of 235	EMICERT	A
2024	Creta Cargo IV Maritime Company	378.86	97.53	+288%	207 of 220	EMICERT	A
2023	not published	374.53	108.62	+245%	201 of 221	EMICERT	A
2022	not published	345.04	90.62	+281%	207 of 223	EMICERT	A
2021	not published	502.06	103.64	+384%	213 of 219	Verifavia	A
2020	not published	616.66	102.77	+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.