Navalyze · LNG carrier · Ship

UMM BAB

IMO: 9308431
Type: LNG carrier
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

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

348.7 kg/nm

LNG carrier median 190.4 kg/nm (+83%)

CO₂ per transport work (volume)

16.71

g CO₂/m³·nm · LNG carrier median 7.12 (+135%)

Average speed

14.6 kn

LNG carrier median 14.4 kn (+1%)

Fuel per day at sea

122.4 t/day

Fuel consumed

7,319 t

CO₂ emitted

21,593 t

21,887 t CO₂eq incl. CH₄ and N₂O

Distance sailed

20,990 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,435 h

60 days, 16% 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 348.7 kg/nm · median 190.4 (+83%)

152.1Ranks 370 of 386, lowest first319.4

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 16.71 g CO₂/m³·nm · median 7.12 (+135%)

5.06Ranks 349 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 EU64%
Into the EU36%
At berth in the EU0%

50% of this ship's CO₂ falls under the EU ETS (10,822 t).

Fuel burned laden

38%

62% in ballast or unladen

CO₂ at berth

0.2%

Alongside in EU ports

Methane (CH₄)

0.2 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.014

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

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	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	MARAN GAS MARITIME INC.	7,319	21,593	20,990	1,435	14.6	348.7	–	38%
2024LNG	MARAN GAS MARITIME INC.	7,294	20,571	24,225	1,704	14.2	301.1	–	–
2023LNG	not published	7,157	20,807	22,636	1,549	14.6	316.2	–	–
2021LNG	not published	18,651	54,357	59,961	3,991	15.0	311.1	–	–
2020LNG	not published	22,797	65,891	53,206	3,792	14.0	428.5	–	–
2019LNG	not published	10,013	28,697	27,011	2,048	13.2	370.7	–	–
2018LNG	not published	19,436	56,115	58,011	4,926	11.8	335.0	–	–

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.	16.71	7.12	+135%	349 of 386	ABS	A
2024LNG	MARAN GAS MARITIME INC.	11.26	7.39	+52%	245 of 312	ABS	A
2023LNG	not published	13.35	9.10	+47%	289 of 355	ABS	A
2021LNG	not published	12.63	10.46	+21%	192 of 289	ABS	A
2020LNG	not published	18.98	10.71	+77%	244 of 267	ABS	A
2019LNG	not published	14.94	10.87	+37%	198 of 248	ABS	A
2018LNG	not published	13.95	10.92	+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.