Navalyze · LNG carrier · Ship

MARAN GAS ASCLEPIUS

IMO: 9302499
Type: LNG carrier
Port of registry: Piraeus
Technical efficiency: EIV 10.48 g CO₂/t·nm
Fuel: Mostly LNG

ISM company (DoC holder) in 2025: MARAN GAS MARITIME INC. · part of Maran

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

283.8 kg/nm

LNG carrier median 190.4 kg/nm (+49%)

CO₂ per transport work (volume)

11.33

g CO₂/m³·nm · LNG carrier median 7.12 (+59%)

Average speed

13.5 kn

LNG carrier median 14.4 kn (−6%)

Fuel per day at sea

92.1 t/day

Fuel consumed

6,522 t

CO₂ emitted

17,999 t

18,193 t CO₂eq incl. CH₄ and N₂O

Distance sailed

22,983 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,699 h

71 days, 19% of the year

Within the LNG carrier fleet, 2025

Set against all 386 LNG 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 283.8 kg/nm · median 190.4 (+49%)

152.1Ranks 307 of 386, lowest first319.4

Average speedThis ship 13.5 kn · median 14.4 (−6%)

11.2Faster than 29% of LNG carrier ships15.9

CO₂ per transport work (volume)This ship 11.33 g CO₂/m³·nm · median 7.12 (+59%)

5.06Ranks 320 of 386, lowest first16.14

Middle 80% of shipsMiddle 50%LNG 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 ports0%
From the EU52%
Into the EU47%
At berth in the EU1%

50% of this ship's CO₂ falls under the EU ETS (9,058 t).

Fuel burned laden

99%

1% in ballast or unladen

CO₂ at berth

0.7%

Alongside in EU ports

Methane (CH₄)

0.0 t

LNG engines slip unburnt methane

CO₂eq ÷ CO₂

1.011

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

Full-year reports only. The LNG carrier median is the middle ship of all LNG 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

MARAN GAS ASCLEPIUS
LNG carrier median

150.0200.0250.0300.0350.0400.0

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

Average speed, kn

MARAN GAS ASCLEPIUS
LNG carrier median

11.012.013.014.015.0

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

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

MARAN GAS ASCLEPIUS
LNG carrier median

5.010.015.020.025.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2023→2025	−0.7 kn	−10%	−14%	+4%	−13%	0.7 kn slower, fuel per mile down 10%; in line with the speed change.
2022→2023	+0.1 kn	−2%	−1%	+129%	+4%	Same speed, fuel per mile flat.
2021→2022	+1.0 kn	−14%	−8%	−72%	−25%	1.0 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2020→2021	+1.9 kn	+3%	+20%	+26%	−28%	1.9 kn faster, fuel per mile up 3%; better than speed alone explains (hull, engine or trade).
2019→2020	−2.3 kn	+7%	−11%	−38%	+71%	2.3 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.7 kn	−9%	−13%	−2%	−12%	0.7 kn slower, fuel per mile down 9%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025LNG	MARAN GAS MARITIME INC.	6,522	17,999	22,983	1,699	13.5	283.8	–	99%
2023LNG	not published	6,943	20,020	22,056	1,548	14.2	314.8	–	–
2022LNG	not published	3,082	9,056	9,645	683	14.1	319.6	–	–
2021	not published	12,594	37,168	33,846	2,579	13.1	372.1	–	–
2020LNG	not published	9,748	28,576	26,965	2,401	11.2	361.5	–	–
2019LNG	not published	14,627	42,362	43,243	3,201	13.5	338.2	–	–
2018LNG	not published	16,412	47,779	44,225	3,112	14.2	371.1	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/m³·nm	LNG carrier median	vs LNG carrier	Rank	Verifier	Methods
2025LNG	MARAN GAS MARITIME INC.	11.33	7.12	+59%	320 of 386	ABS	A
2023LNG	not published	13.00	9.10	+43%	283 of 355	ABS	A
2022LNG	not published	12.52	10.38	+21%	255 of 379	ABS	A
2021	not published	16.65	10.46	+59%	247 of 289	ABS	A
2020LNG	not published	22.98	10.71	+115%	252 of 267	ABS	A
2019LNG	not published	13.46	10.87	+24%	174 of 248	ABS	A
2018LNG	not published	15.21	10.92	+39%	161 of 197	ABS	A+C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. LNG carrier ships are benchmarked on CO₂ per transport work (volume) (TW), in g CO₂/m³·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 LNG 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.