Navalyze · LNG carrier · Ship

GASLOG WINCHESTER

IMO: 9876737
Type: LNG carrier
Flag (estimated): Bermuda
Port of registry: Hamilton
Technical efficiency: EEDI 4.80 g CO₂/t·nm
Fuel (estimated): Mostly LNG

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

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

184

LNG carrier median 231 kg/nm (−20%)

CO₂ per transport work (volume)

6.44

g CO₂/m³·nm · LNG carrier median 9.10 (−29%)

Average speed

13.7 kn

LNG carrier median 14.2 kn (−4%)

Fuel per day at sea

60.4 t/day

Fuel consumed

8,597 t

CO₂ emitted

23,861 t

Distance sailed

46,713 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,415 h

142 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 185 kg/nm · median 190 (−3%)

152Ranks 178 of 386, lowest first319

Average speedThis ship 14.7 kn · median 14.4 (+2%)

11.2Faster than 56% of LNG carrier ships15.9

CO₂ per transport work (volume)This ship 6.05 g CO₂/m³·nm · median 7.12 (−15%)

5.06Ranks 140 of 386, lowest first16.1

Middle 80% of shipsMiddle 50%LNG carrier medianThis ship

Where the emissions happen, 2023

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 EU46%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

492 t

2.1% 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 WINCHESTER
LNG carrier median

150.0175.0200.0225.0250.0275.0

’212021’222022’232023’242024’252025

Average speed, kn

GASLOG WINCHESTER
LNG carrier median

13.514.014.515.015.5

’212021’222022’232023’242024’252025

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

GASLOG WINCHESTER
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	−0.5 kn	+9%	+5%	+331%	+4%	0.5 kn slower, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+1.5 kn	−8%	+3%	−74%	−10%	1.5 kn faster, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.3 kn	−7%	−16%	+42%	+4%	1.3 kn slower, fuel per mile down 7%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.2 kn	−3%	−4%	+184%	−22%	Same speed, fuel per mile down 3%; 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	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.	9,789	26,535	52,892	3,601	14.7	185	–	–
2024LNG	GasLog LNG Services Ltd.	2,079	5,641	12,265	805	15.2	170	–	–
2023LNG / alt.	not published	8,597	23,861	46,713	3,415	13.7	184	–	–
2022LNG / alt.	not published	6,532	19,240	32,913	2,189	15.0	198	–	66%
2021	not published	2,358	7,083	11,572	759	15.2	204	–	40%

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.	6.05	7.12	−15%	140 of 386	ABS	B+C
2024LNG	GasLog LNG Services Ltd.	5.82	7.39	−21%	95 of 312	ABS	B+C
2023LNG / alt.	not published	6.44	9.10	−29%	84 of 355	ABS	B+C
2022LNG / alt.	not published	6.17	10.4	−41%	47 of 379	ABS	B+C
2021	not published	7.94	10.5	−24%	90 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.