Navalyze · LNG carrier · Ship

UMM BAB

IMO: 9308431
Type: LNG carrier
Flag (estimated): Greece
Port of registry: Piraeus
Technical efficiency: EIV 10.48 g CO₂/t·nm

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

Report year

2018 at a glance

From the 2018 THETIS-MRV report.

Fuel kg/nm

335

LNG carrier median 323 kg/nm (+4%)

CO₂ per transport work (volume)

14.0

g CO₂/m³·nm · LNG carrier median 10.9 (+28%)

Average speed

11.8 kn

LNG carrier median 13.7 kn (−14%)

Fuel per day at sea

94.7 t/day

Fuel consumed

19,436 t

CO₂ emitted

56,115 t

Distance sailed

58,011 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,926 h

205 days, 56% 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 kg/nmThis ship 349 kg/nm · median 190 (+83%)

152Ranks 370 of 386, lowest first319

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

11.2Faster than 55% of LNG carrier ships15.9

CO₂ per transport work (volume)This ship 16.7 g CO₂/m³·nm · median 7.12 (+135%)

5.06Ranks 349 of 386, lowest first16.1

Middle 80% of shipsMiddle 50%LNG 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 ports0%
From the EU51%
Into the EU47%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

1,380 t

2.5% 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 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 kg/nm

UMM BAB
LNG carrier median

100.0200.0300.0400.0500.0

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

Average speed, kn

UMM BAB
LNG carrier median

11.012.013.014.015.0

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

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

UMM BAB
LNG carrier median

5.010.015.020.0

’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	+0.4 kn	+16%	+19%	−13%	+48%	0.4 kn faster, fuel per mile up 16%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.4 kn	−5%	−7%	+7%	−16%	0.4 kn slower, fuel per mile down 5%; in line with the speed change.
2021→2023	−0.4 kn	+2%	−1%	−62%	+6%	0.4 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.0 kn	−27%	−22%	+13%	−33%	1.0 kn faster, fuel per mile down 27%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.8 kn	+16%	+23%	+97%	+27%	0.8 kn faster, fuel per mile up 16%; in line with the speed change.
2018→2019	+1.4 kn	+11%	+24%	−53%	+7%	1.4 kn faster, fuel per mile up 11%; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	MARAN GAS MARITIME INC.	7,319	21,593	20,990	1,435	14.6	349	–	38%
2024LNG	MARAN GAS MARITIME INC.	7,294	20,571	24,225	1,704	14.2	301	–	–
2023LNG / alt.	not published	7,157	20,807	22,636	1,549	14.6	316	–	–
2021LNG / alt.	not published	18,651	54,357	59,961	3,991	15.0	311	–	–
2020LNG / alt.	not published	22,797	65,891	53,206	3,792	14.0	429	–	–
2019LNG / alt.	not published	10,013	28,697	27,011	2,048	13.2	371	–	–
2018LNG / alt.	not published	19,436	56,115	58,011	4,926	11.8	335	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/m³·nm	LNG carrier median	vs LNG carrier	Rank	Verifier	Methods
2025	MARAN GAS MARITIME INC.	16.7	7.12	+135%	349 of 386	ABS	A
2024LNG	MARAN GAS MARITIME INC.	11.3	7.39	+52%	245 of 312	ABS	A
2023LNG / alt.	not published	13.4	9.10	+47%	289 of 355	ABS	A
2021LNG / alt.	not published	12.6	10.5	+21%	192 of 289	ABS	A
2020LNG / alt.	not published	19.0	10.7	+77%	244 of 267	ABS	A
2019LNG / alt.	not published	14.9	10.9	+37%	198 of 248	ABS	A
2018LNG / alt.	not published	14.0	10.9	+28%	151 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.