Navalyze · Vehicle carrier · Ship

CRONUS LEADER

IMO: 9464455
Type: Vehicle carrier
Average cargo carried: 6,449 t
Flag (estimated): Japan
Port of registry: Kaminoseki, Yamaguchi Prefecture
Technical efficiency: EEXI 14.50 g CO₂/t·nm
Fuel (estimated): Oil blended with biofuel or another alternative fuel

ISM company (DoC holder) in 2025: Toko Unyu Co Ltd

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 7,079 t of cargo on average.

Fuel kg/nm

107

Vehicle carrier median 103 kg/nm (+4%)

CO₂ per transport work (cargo)

47.1

g CO₂/t·nm · Vehicle carrier median 56.6 (−17%)

Average speed

14.3 kn

Vehicle carrier median 14.5 kn (−1%)

Fuel per day at sea

36.6 t/day

Fuel consumed

2,331 t

CO₂ emitted

7,285 t

Distance sailed

21,861 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,527 h

64 days, 17% of the year

Within the vehicle carrier fleet, 2025

Set against all 506 vehicle carrier 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 103 kg/nm · median 99.9 (+3%)

79.6Ranks 308 of 506, lowest first119

Average speedThis ship 14.6 kn · median 14.4 (+1%)

12.0Faster than 55% of vehicle carrier ships15.9

CO₂ per transport work (cargo)This ship 49.5 g CO₂/t·nm · median 55.4 (−11%)

34.7Ranks 206 of 506, lowest first158

Middle 80% of shipsMiddle 50%Vehicle carrier medianThis ship

Where the emissions happen, 2023

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 ports0%
From the EU38%
Into the EU60%
At berth in the EU2%

Fuel burned laden

2,284 t

98% of all fuel; 2% in ballast or unladen

CO₂ at berth

146 t

2.0% 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 Vehicle carrier median is the middle ship of all vehicle carrier ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

CRONUS LEADER
Vehicle carrier median

80.090.0100.0110.0

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

Average speed, kn

CRONUS LEADER
Vehicle carrier median

6.08.010.012.014.016.0

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

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

CRONUS LEADER
Vehicle carrier median

40.050.060.070.0

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+1.0 kn	+19%	+27%	+303%	−16%	1.0 kn faster, fuel per mile up 19%; in line with the speed change.
2023→2024	−0.7 kn	−18%	−22%	−69%	+26%	0.7 kn slower, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).
2021→2023	+0.1 kn	+20%	+21%	+10%	+2%	Same speed, fuel per mile up 20%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+7.0 kn	−13%	+72%	−26%	−29%	7.0 kn faster, fuel per mile down 13%; better than speed alone explains (hull, engine or trade).
2019→2020	−6.7 kn	+6%	−45%	+63%	+50%	6.7 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.6 kn	−10%	−14%	−25%	−34%	0.6 kn slower, fuel per mile down 10%; in line with the speed change.

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
2025Bio blend	Toko Unyu Co Ltd	2,810	8,698	27,229	1,870	14.6	103	49.5	–
2024	Toko Unyu Co Ltd	588	1,868	6,764	496	13.6	87.0	59.3	90%
2023	not published	2,331	7,285	21,861	1,527	14.3	107	47.1	98%
2021	not published	1,762	5,526	19,822	1,395	14.2	88.9	46.3	–
2020	not published	2,732	8,561	26,762	3,734	7.2	102	65.7	–
2019	not published	1,581	4,946	16,371	1,178	13.9	96.6	43.8	–
2018	not published	2,363	7,399	21,917	1,511	14.5	108	66.5	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Vehicle carrier median	vs Vehicle carrier	Rank	Verifier	Methods
2025Bio blend	Toko Unyu Co Ltd	49.5	55.4	−11%	206 of 506	Verifavia	A+C
2024	Toko Unyu Co Ltd	59.3	55.3	+7%	183 of 335	ABS	A
2023	not published	47.1	56.6	−17%	112 of 417	ABS	–
2021	not published	46.3	59.6	−22%	96 of 459	Verifavia	A
2020	not published	65.7	57.3	+15%	284 of 449	Verifavia	A
2019	not published	43.8	59.0	−26%	45 of 426	Verifavia	A
2018	not published	66.5	62.4	+7%	252 of 434	Verifavia	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Vehicle carrier 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 vehicle carrier 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.