Navalyze · Other · Ship

LIBERTY POWER

IMO: 9578957
Type: Other ship types
Average cargo carried: 2,483 t
Port of registry: New York, Ny
Ice class: IB
Former names: JOLLY DIAMANTE

ISM company (DoC holder) in 2025: Liberty Maritime Corporation

Report year

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 2,483 t of cargo on average.

Fuel per mile

149.0 kg/nm

Other median 87.2 kg/nm (+71%)

CO₂ per transport work (cargo)

188

g CO₂/t·nm · Other median 86.69 (+117%)

Average speed

14.2 kn

Other median 10.4 kn (+37%)

Fuel per day at sea

50.6 t/day

Fuel consumed

5,278 t

CO₂ emitted

16,540 t

16,799 t CO₂eq incl. CH₄ and N₂O

Distance sailed

35,420 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,503 h

104 days, 29% of the year

Within the other fleet, 2025

Set against all 159 other 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 149.0 kg/nm · median 87.2 (+71%)

47.6Ranks 137 of 159, lowest first160.7

Average speedThis ship 14.2 kn · median 10.4 (+37%)

5.8Faster than 91% of other ships13.4

CO₂ per transport work (cargo)This ship 188.07 g CO₂/t·nm · median 86.69 (+117%)

30.78Ranks 112 of 159, lowest first600.46

Middle 80% of shipsMiddle 50%Other 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 ports0%
From the EU36%
Into the EU62%
At berth in the EU1%

51% of this ship's CO₂ falls under the EU ETS (8,398 t).

Fuel burned laden

–

Not reported

CO₂ at berth

1.2%

Alongside in EU ports

Methane (CH₄)

0.3 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 Other median is the middle ship of all other ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel per mile, kg/nm

LIBERTY POWER
Other median

75.0100.0125.0150.0175.0

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

Average speed, kn

LIBERTY POWER
Other median

10.012.014.016.018.0

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

CO₂ per transport work (volume), g CO₂/m³·nm

LIBERTY POWER
Other median

0.050.0100150200

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−2.5 kn	+38%	+17%	+1,482%	–	2.5 kn slower, fuel per mile up 38%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.5 kn	−28%	−21%	−88%	–	1.5 kn faster, fuel per mile down 28%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.8 kn	+5%	+11%	−24%	–	0.8 kn faster, fuel per mile up 5%; better than speed alone explains (hull, engine or trade).
2021→2022	+0.9 kn	−12%	−6%	+46%	+24%	0.9 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.1 kn	+2%	+1%	−25%	+20%	Same speed, fuel per mile up 2%; in line with the speed change.
2019→2020	+1.5 kn	−2%	+10%	+27%	−5%	1.5 kn faster, fuel per mile down 2%; better than speed alone explains (hull, engine or trade).
2018→2019	+1.9 kn	−4%	+14%	−17%	−8%	1.9 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine 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	Liberty Maritime Corporation	5,278	16,540	35,420	2,503	14.2	149.0	188.07	–
2024	Liberty Maritime Corporation	242	756	2,239	134	16.7	108.2	–	–
2023	not published	2,794	8,732	18,548	1,220	15.2	150.6	–	–
2022	not published	3,517	10,957	24,432	1,699	14.4	144.0	–	–
2021	not published	2,744	8,546	16,754	1,241	13.5	163.8	–	–
2020	not published	3,591	11,185	22,412	1,644	13.6	160.2	–	–
2019	not published	2,876	8,962	17,580	1,449	12.1	163.6	–	–
2018	not published	3,593	11,190	21,105	2,069	10.2	170.2	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Other median	vs Other	Rank	Verifier	Methods
2025	Liberty Maritime Corporation	188.07	86.69	+117%	112 of 159	DNV	B+C
2024	Liberty Maritime Corporation	–	–	–	–	DNV	A+C
2023	not published	–	–	–	–	DNV	A+C
2022	not published	10.20	7.68	+33%	48 of 59	ABS	C
2021	not published	8.23	8.10	+2%	33 of 62	RINA	B
2020	not published	6.83	8.53	−20%	14 of 69	RINA	B
2019	not published	7.21	9.58	−25%	15 of 67	RINA	B
2018	not published	7.80	11.58	−33%	17 of 65	RINA	B

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Other 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 other 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.