Navalyze · Vehicle carrier · Ship

RUBY ACE

IMO: 9476757
Type: Vehicle carrier
Average cargo carried: 3,288 t
Port of registry: Tokyo
Technical efficiency: EEXI 14.80 g CO₂/t·nm

ISM company (DoC holder) in 2025: MOL SHIP MANAGEMENT (SINGAPORE) PTE. LTD. · part of MOL

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 3,288 t of cargo on average.

Fuel per mile

95.8 kg/nm

Vehicle carrier median 99.9 kg/nm (−4%)

CO₂ per transport work (cargo)

91.03

g CO₂/t·nm · Vehicle carrier median 55.36 (+64%)

Average speed

14.9 kn

Vehicle carrier median 14.4 kn (+3%)

Fuel per day at sea

34.2 t/day

Fuel consumed

3,338 t

CO₂ emitted

10,436 t

10,600 t CO₂eq incl. CH₄ and N₂O

Distance sailed

34,866 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,344 h

98 days, 27% 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 per mileThis ship 95.8 kg/nm · median 99.9 (−4%)

79.6Ranks 187 of 506, lowest first119.0

Average speedThis ship 14.9 kn · median 14.4 (+3%)

12.0Faster than 63% of vehicle carrier ships15.9

CO₂ per transport work (cargo)This ship 91.03 g CO₂/t·nm · median 55.36 (+64%)

34.70Ranks 395 of 506, lowest first158.48

Middle 80% of shipsMiddle 50%Vehicle carrier 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 ports20%
From the EU75%
Into the EU3%
At berth in the EU2%

59% of this ship's CO₂ falls under the EU ETS (6,128 t).

Fuel burned laden

61%

39% in ballast or unladen

CO₂ at berth

2.3%

Alongside in EU ports

Methane (CH₄)

0.2 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 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 per mile, kg/nm

RUBY ACE
Vehicle carrier median

80.090.0100.0110.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

RUBY ACE
Vehicle carrier median

12.013.014.015.016.017.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

RUBY ACE
Vehicle carrier median

40.060.080.0100

’182018’192019’202020’212021’222022’232023’252025

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−0.3 kn	−2%	−4%	+92%	–	Same speed, fuel per mile down 2%; in line with the speed change.
2023→2024	−1.2 kn	+4%	−4%	+5%	–	1.2 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.4 kn	−1%	+8%	+78%	+3%	1.4 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2021→2022	−0.2 kn	+7%	+6%	−56%	−28%	Same speed, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.6 kn	+3%	+7%	+28%	+38%	0.6 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).
2019→2020	+1.7 kn	−12%	−0%	+88%	−14%	1.7 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2018→2019	−3.5 kn	+1%	−21%	−71%	+8%	3.5 kn slower, fuel per mile flat; 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	MOL SHIP MANAGEMENT (SINGAPORE) PTE. LTD.	3,338	10,436	34,866	2,344	14.9	95.8	91.03	61%
2024	MOL SHIP MANAGEMENT (SINGAPORE) PTE. LTD.	1,775	5,520	18,123	1,194	15.2	97.9	–	98%
2023	not published	1,622	5,121	17,246	1,052	16.4	94.1	46.20	98%
2022	not published	920	2,907	9,692	647	15.0	94.9	44.86	98%
2021	not published	1,968	6,210	22,170	1,456	15.2	88.8	62.54	78%
2020	not published	1,494	4,719	17,261	1,180	14.6	86.6	45.32	98%
2019	not published	903	2,838	9,164	711	12.9	98.6	52.63	95%
2018	not published	3,096	9,670	31,623	1,925	16.4	97.9	48.52	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Vehicle carrier median	vs Vehicle carrier	Rank	Verifier	Methods
2025	MOL SHIP MANAGEMENT (SINGAPORE) PTE. LTD.	91.03	55.36	+64%	395 of 506	ClassNK	A+C
2024	MOL SHIP MANAGEMENT (SINGAPORE) PTE. LTD.	–	–	–	–	ClassNK	C
2023	not published	46.20	56.64	−18%	103 of 417	ClassNK	C
2022	not published	44.86	57.66	−22%	96 of 463	ClassNK	C
2021	not published	62.54	59.57	+5%	254 of 459	ClassNK	C
2020	not published	45.32	57.26	−21%	95 of 449	ClassNK	C
2019	not published	52.63	58.95	−11%	144 of 426	ClassNK	C
2018	not published	48.52	62.35	−22%	64 of 434	ClassNK	C

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.