Navalyze · LNG carrier · Ship

GASLOG WESTMINSTER

IMO: 9855812
Type: LNG carrier
Flag (estimated): Bermuda
Port of registry: Hamilton
Technical efficiency: EEDI 4.79 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

175

LNG carrier median 257 kg/nm (−32%)

CO₂ per transport work (volume)

6.74

g CO₂/m³·nm · LNG carrier median 10.5 (−36%)

Average speed

15.5 kn

LNG carrier median 14.6 kn (+6%)

Fuel per day at sea

65.2 t/day

Fuel consumed

8,129 t

CO₂ emitted

22,942 t

Distance sailed

46,450 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,992 h

125 days, 34% 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 194 kg/nm · median 190 (+2%)

152Ranks 211 of 386, lowest first319

Average speedThis ship 12.0 kn · median 14.4 (−17%)

11.2Faster than 13% of LNG carrier ships15.9

CO₂ per transport work (volume)This ship 7.54 g CO₂/m³·nm · median 7.12 (+6%)

5.06Ranks 210 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 EU51%
Into the EU47%
At berth in the EU2%

Fuel burned laden

3,886 t

48% of all fuel; 52% in ballast or unladen

CO₂ at berth

452 t

2.0% 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 WESTMINSTER
LNG carrier median

150.0200.0250.0300.0

’202020’212021’222022’232023’242024’252025

Average speed, kn

GASLOG WESTMINSTER
LNG carrier median

12.013.014.015.016.0

’202020’212021’222022’232023’242024’252025

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

GASLOG WESTMINSTER
LNG carrier median

4.06.08.010.012.0

’202020’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.7 kn	+13%	+7%	+19%	+41%	0.7 kn slower, fuel per mile up 13%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−2.4 kn	−2%	−17%	−41%	−12%	2.4 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.5 kn	−11%	−8%	+47%	−43%	0.5 kn faster, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.9 kn	+12%	+6%	−18%	+57%	0.9 kn slower, fuel per mile up 12%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.0 kn	−13%	−13%	+332%	−17%	Same speed, fuel per mile down 13%; 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
2025LNG	GasLog LNG Services Ltd.	7,630	20,945	39,260	3,261	12.0	194	–	–
2024LNG	GasLog LNG Services Ltd.	5,708	15,480	33,121	2,615	12.7	172	–	–
2023LNG / alt.	not published	9,851	27,273	56,034	3,721	15.1	176	–	–
2022	not published	7,519	22,852	38,221	2,616	14.6	197	–	41%
2021LNG / alt.	not published	8,129	22,942	46,450	2,992	15.5	175	–	48%
2020LNG / alt.	not published	2,162	5,968	10,760	694	15.5	201	–	47%

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.	7.54	7.12	+6%	210 of 386	ABS	B+C
2024LNG	GasLog LNG Services Ltd.	5.36	7.39	−27%	71 of 312	ABS	B+C
2023LNG / alt.	not published	6.08	9.10	−33%	62 of 355	ABS	B+C
2022	not published	10.6	10.4	+2%	196 of 379	ABS	B+C
2021LNG / alt.	not published	6.74	10.5	−36%	55 of 289	ABS	B+C
2020LNG / alt.	not published	8.10	10.7	−24%	56 of 267	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.