Navalyze · Vehicle carrier · Ship

LIBERTY

IMO: 9310109
Type: Vehicle carrier
Average cargo carried: 8,535 t
Flag (estimated): United States
Port of registry: Wilmington, De
Technical efficiency: EEXI 13.80 g CO₂/t·nm

ISM company (DoC holder) in 2024: American Roll-On Roll-Off Carrier, LLC

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 7,045 t of cargo on average.

Fuel kg/nm

119

Vehicle carrier median 104 kg/nm (+14%)

CO₂ per transport work (cargo)

53.2

g CO₂/t·nm · Vehicle carrier median 62.4 (−15%)

Average speed

14.6 kn

Vehicle carrier median 14.7 kn (−1%)

Fuel per day at sea

41.8 t/day

Fuel consumed

3,177 t

CO₂ emitted

9,969 t

Distance sailed

26,625 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,822 h

76 days, 21% of the year

Within the vehicle carrier fleet, 2024

Set against all 335 vehicle carrier ships with a full-year 2024 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 114 kg/nm · median 103 (+10%)

80.4Ranks 276 of 335, lowest first120

Average speedThis ship 16.4 kn · median 14.4 (+14%)

12.3Faster than 94% of vehicle carrier ships16.1

CO₂ per transport work (cargo)This ship 41.5 g CO₂/t·nm · median 55.3 (−25%)

37.7Ranks 62 of 335, lowest first158

Middle 80% of shipsMiddle 50%Vehicle carrier medianThis ship

Where the emissions happen, 2018

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 ports34%
From the EU27%
Into the EU35%
At berth in the EU4%

Fuel burned laden

–

Not reported

CO₂ at berth

394 t

4.0% 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

LIBERTY
Vehicle carrier median

80.090.0100.0110.0120.0130.0

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

Average speed, kn

LIBERTY
Vehicle carrier median

10.012.014.016.018.0

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

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

LIBERTY
Vehicle carrier median

20.040.060.080.0100

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2023→2024	+3.1 kn	+15%	+41%	−58%	−1%	3.1 kn faster, fuel per mile up 15%; better than speed alone explains (hull, engine or trade).
2022→2023	+1.8 kn	+17%	+34%	+58%	−49%	1.8 kn faster, fuel per mile up 17%; better than speed alone explains (hull, engine or trade).
2021→2022	−2.6 kn	−30%	−43%	+28%	+115%	2.6 kn slower, fuel per mile down 30%; in line with the speed change.
2020→2021	+0.1 kn	+14%	+15%	−72%	−24%	Same speed, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	−0.2 kn	−12%	−13%	+95%	+11%	Same speed, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.4 kn	+2%	−1%	−6%	−16%	0.4 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2024	American Roll-On Roll-Off Carrier, LLC	1,296	4,037	11,406	698	16.4	114	41.5	–
2023	not published	2,689	8,499	27,100	2,042	13.3	99.2	41.9	–
2022	not published	1,459	4,590	17,147	1,490	11.5	85.1	81.4	–
2021	not published	1,630	5,103	13,358	944	14.1	122	37.9	–
2020	not published	5,164	16,235	48,450	3,451	14.0	107	49.6	–
2019	not published	3,024	9,473	24,898	1,755	14.2	122	44.5	–
2018	not published	3,177	9,969	26,625	1,822	14.6	119	53.2	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Vehicle carrier median	vs Vehicle carrier	Rank	Verifier	Methods
2024	American Roll-On Roll-Off Carrier, LLC	41.5	55.3	−25%	62 of 335	DNV	A+C
2023	not published	41.9	56.6	−26%	66 of 417	DNV	A+B+C
2022	not published	81.4	57.7	+41%	359 of 463	DNV	B+C
2021	not published	37.9	59.6	−36%	25 of 459	DNV	B+C
2020	not published	49.6	57.3	−13%	144 of 449	DNV	B+C
2019	not published	44.5	59.0	−25%	49 of 426	DNV	B+C
2018	not published	53.2	62.4	−15%	110 of 434	DNV	B+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.