Navalyze · LNG carrier · Ship

DIAMOND GAS CRYSTAL

IMO: 9874454
Type: LNG carrier
Flag (estimated): Singapore
Port of registry: Singapore
Technical efficiency: EEDI 5.14 g CO₂/t·nm
Fuel (estimated): Mostly LNG

ISM company (DoC holder) in 2025: NYK SHIPMANAGEMENT PTE LTD · part of NYK

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

182

LNG carrier median 231 kg/nm (−21%)

CO₂ per transport work (volume)

7.33

g CO₂/m³·nm · LNG carrier median 9.10 (−19%)

Average speed

14.5 kn

LNG carrier median 14.2 kn (+2%)

Fuel per day at sea

63.0 t/day

Fuel consumed

10,273 t

CO₂ emitted

28,728 t

Distance sailed

56,543 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,911 h

163 days, 45% 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 178 kg/nm · median 190 (−7%)

152Ranks 129 of 386, lowest first319

Average speedThis ship 12.8 kn · median 14.4 (−11%)

11.2Faster than 20% of LNG carrier ships15.9

CO₂ per transport work (volume)This ship 8.62 g CO₂/m³·nm · median 7.12 (+21%)

5.06Ranks 250 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 EU55%
Into the EU42%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

735 t

2.6% 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

DIAMOND GAS CRYSTAL
LNG carrier median

150.0175.0200.0225.0250.0275.0

’222022’232023’242024’252025

Average speed, kn

DIAMOND GAS CRYSTAL
LNG carrier median

12.013.014.015.0

’222022’232023’242024’252025

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

DIAMOND GAS CRYSTAL
LNG carrier median

6.07.08.09.010.011.0

’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	−0.9 kn	+8%	+1%	−64%	+25%	0.9 kn slower, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.8 kn	−10%	−14%	+25%	−6%	0.8 kn slower, fuel per mile down 10%; in line with the speed change.
2022→2023	+2.1 kn	+7%	+25%	+127%	+9%	2.1 kn faster, fuel per mile up 7%; better than speed alone explains (hull, engine or trade).

Part-year reports are left out of these comparisons. 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	NYK SHIPMANAGEMENT PTE LTD	4,445	12,079	25,051	1,956	12.8	178	–	–
2024part-yearLNG	NYK LNG Shipmanagement Ltd	5,108	13,848	30,564	2,100	14.6	167	–	–
2024LNG	NYK SHIPMANAGEMENT PTE LTD	11,581	31,412	70,536	5,137	13.7	164	–	–
2023LNG / alt.	not published	10,273	28,728	56,543	3,911	14.5	182	–	–
2022LNG / alt.	not published	4,258	11,904	24,958	2,018	12.4	171	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/m³·nm	LNG carrier median	vs LNG carrier	Rank	Verifier	Methods
2025LNG	NYK SHIPMANAGEMENT PTE LTD	8.62	7.12	+21%	250 of 386	ClassNK	B+C
2024part-yearLNG	NYK LNG Shipmanagement Ltd	–	–	–	–	ClassNK	C
2024LNG	NYK SHIPMANAGEMENT PTE LTD	6.92	7.39	−6%	141 of 312	ClassNK	B+C
2023LNG / alt.	not published	7.33	9.10	−19%	125 of 355	ClassNK	A+C
2022LNG / alt.	not published	6.73	10.4	−35%	77 of 379	ClassNK	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.