Navalyze · LNG carrier · Ship

AL RUWAIS

IMO: 9337951
Type: LNG carrier
Flag (estimated): Bahamas
Port of registry: Nassau
Technical efficiency: EEXI 6.13 g CO₂/t·nm
Fuel (estimated): Oil blended with biofuel or another alternative fuel

ISM company (DoC holder) in 2025: NEPTANA Schiffsbetriebsgesellschaft mbH & Co. TS „ALEXANDRA“ KG

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

325

LNG carrier median 231 kg/nm (+41%)

CO₂ per transport work (volume)

11.1

g CO₂/m³·nm · LNG carrier median 9.10 (+22%)

Average speed

16.0 kn

LNG carrier median 14.2 kn (+13%)

Fuel per day at sea

124.6 t/day

Fuel consumed

12,108 t

CO₂ emitted

37,802 t

Distance sailed

37,312 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,333 h

97 days, 27% 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 304 kg/nm · median 190 (+60%)

152Ranks 331 of 386, lowest first319

Average speedThis ship 15.1 kn · median 14.4 (+5%)

11.2Faster than 74% of LNG carrier ships15.9

CO₂ per transport work (volume)This ship 9.31 g CO₂/m³·nm · median 7.12 (+31%)

5.06Ranks 273 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 EU45%
Into the EU53%
At berth in the EU2%

Fuel burned laden

–

Not reported

CO₂ at berth

631 t

1.7% 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

AL RUWAIS
LNG carrier median

150.0200.0250.0300.0350.0400.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

AL RUWAIS
LNG carrier median

13.014.015.016.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

AL RUWAIS
LNG carrier median

6.08.010.012.014.0

’182018’192019’202020’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−0.8 kn	+6%	+1%	−48%	+8%	0.8 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.1 kn	−11%	−12%	+30%	−22%	Same speed, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2022→2023	+0.0 kn	−4%	−4%	+44%	−8%	Same speed, fuel per mile down 4%; in line with the speed change.
2021→2022	+2.5 kn	−12%	+4%	+118%	+13%	2.5 kn faster, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2020→2021	−0.3 kn	+2%	−1%	−79%	+12%	0.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.6 kn	+5%	+10%	+23%	−24%	0.6 kn faster, fuel per mile up 5%; in line with the speed change.
2018→2019	+0.1 kn	+16%	+17%	+258%	+43%	Same speed, fuel per mile up 16%; 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
2025Bio blend	NEPTANA Schiffsbetriebsgesellschaft mbH & Co. TS „ALEXANDRA“ KG	7,587	23,493	24,949	1,647	15.1	304	–	–
2024	NEPTANA Schiffsbetriebsgesellschaft mbH & Co. TS „ALEXANDRA“ KG	13,915	43,363	48,417	3,054	15.9	287	–	–
2023	not published	12,108	37,802	37,312	2,333	16.0	325	–	–
2022	not published	8,798	27,452	26,001	1,629	16.0	338	–	–
2021	not published	4,607	14,397	11,945	884	13.5	386	–	–
2020	not published	21,762	67,969	57,333	4,141	13.8	380	–	–
2019	not published	16,970	52,940	46,771	3,547	13.2	363	–	–
2018	not published	4,098	12,648	13,077	1,000	13.1	313	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/m³·nm	LNG carrier median	vs LNG carrier	Rank	Verifier	Methods
2025Bio blend	NEPTANA Schiffsbetriebsgesellschaft mbH & Co. TS „ALEXANDRA“ KG	9.31	7.12	+31%	273 of 386	DNV	A+B+C
2024	NEPTANA Schiffsbetriebsgesellschaft mbH & Co. TS „ALEXANDRA“ KG	8.66	7.39	+17%	188 of 312	DNV	B+C
2023	not published	11.1	9.10	+22%	243 of 355	DNV	B+C
2022	not published	12.1	10.4	+17%	241 of 379	DNV	B+C
2021	not published	10.8	10.5	+3%	149 of 289	DNV	B+C
2020	not published	9.60	10.7	−10%	104 of 267	Lloyd's Register	C
2019	not published	12.7	10.9	+16%	166 of 248	Lloyd's Register	C
2018	not published	8.84	10.9	−19%	49 of 197	Lloyd's Register	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.