Navalyze · LNG carrier · Ship

GASLOG WALES

IMO: 9853137
Type: LNG carrier
Flag (estimated): Bermuda
Port of registry: Hamilton
Technical efficiency: EEDI 4.78 g CO₂/t·nm
Fuel (estimated): Mostly LNG

ISM company (DoC holder) in 2025: GasLog LNG Services Ltd.

Report year

2021 at a glance

From the 2021 THETIS-MRV report.

Fuel kg/nm

186

LNG carrier median 257 kg/nm (−27%)

CO₂ per transport work (volume)

6.22

g CO₂/m³·nm · LNG carrier median 10.5 (−41%)

Average speed

14.3 kn

LNG carrier median 14.6 kn (−2%)

Fuel per day at sea

63.7 t/day

Fuel consumed

9,095 t

CO₂ emitted

25,225 t

Distance sailed

48,870 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,428 h

143 days, 39% 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 176 kg/nm · median 190 (−7%)

152Ranks 122 of 386, lowest first319

Average speedThis ship 16.0 kn · median 14.4 (+11%)

11.2Faster than 91% of LNG carrier ships15.9

CO₂ per transport work (volume)This ship 4.96 g CO₂/m³·nm · median 7.12 (−30%)

5.06Ranks 30 of 386, lowest first16.1

Middle 80% of shipsMiddle 50%LNG carrier medianThis ship

Where the emissions happen, 2021

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 EU46%
Into the EU53%
At berth in the EU1%

Fuel burned laden

4,811 t

53% of all fuel; 47% in ballast or unladen

CO₂ at berth

313 t

1.2% 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

GASLOG WALES
LNG carrier median

150.0175.0200.0225.0250.0275.0

’212021’222022’232023’242024’252025

Average speed, kn

GASLOG WALES
LNG carrier median

12.013.014.015.016.0

’212021’222022’232023’242024’252025

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

GASLOG WALES
LNG carrier median

4.06.08.010.012.0

’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+2.9 kn	+4%	+27%	−25%	−21%	2.9 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.1 kn	−12%	−12%	−54%	−2%	Same speed, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2022→2023	+1.2 kn	−3%	+7%	+45%	−16%	1.2 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2021→2022	−2.3 kn	+6%	−11%	−24%	+23%	2.3 kn slower, fuel per mile up 6%; 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
2025LNG	GasLog LNG Services Ltd.	3,228	9,004	18,318	1,146	16.0	176	–	–
2024LNG	GasLog LNG Services Ltd.	4,144	11,246	24,509	1,866	13.1	169	–	–
2023LNG / alt.	not published	10,310	29,592	53,789	4,062	13.2	192	–	–
2022	not published	7,295	21,556	36,978	3,085	12.0	197	–	49%
2021LNG / alt.	not published	9,095	25,225	48,870	3,428	14.3	186	–	53%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/m³·nm	LNG carrier median	vs LNG carrier	Rank	Verifier	Methods
2025LNG	GasLog LNG Services Ltd.	4.96	7.12	−30%	30 of 386	ABS	B+C
2024LNG	GasLog LNG Services Ltd.	6.27	7.39	−15%	117 of 312	ABS	B+C
2023LNG / alt.	not published	6.38	9.10	−30%	77 of 355	ABS	B+C
2022	not published	7.64	10.4	−26%	117 of 379	ABS	B+C
2021LNG / alt.	not published	6.22	10.5	−41%	43 of 289	ABS	B+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.