Navalyze · LNG carrier · Ship

STENA BLUE SKY

IMO: 9315393
Type: LNG carrier
Port of registry: Stranraer
Technical efficiency: EEXI 7.27 g CO₂/t·nm
Ice class: IC
Fuel: Mostly LNG

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel per mile

307.2 kg/nm

LNG carrier median 230.7 kg/nm (+33%)

CO₂ per transport work (volume)

12.36

g CO₂/m³·nm · LNG carrier median 9.10 (+36%)

Average speed

13.6 kn

LNG carrier median 14.2 kn (−4%)

Fuel per day at sea

100.5 t/day

Fuel consumed

7,060 t

CO₂ emitted

19,640 t

Distance sailed

22,978 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,686 h

70 days, 19% of the year

Within the LNG carrier fleet, 2023

Set against all 355 LNG carrier ships with a full-year 2023 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 per mileThis ship 307.2 kg/nm · median 230.7 (+33%)

166.5Ranks 252 of 355, lowest first358.9

Average speedThis ship 13.6 kn · median 14.2 (−4%)

10.7Faster than 38% of LNG carrier ships16.0

CO₂ per transport work (volume)This ship 12.36 g CO₂/m³·nm · median 9.10 (+36%)

5.47Ranks 269 of 355, lowest first17.94

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 EU50%
Into the EU46%
At berth in the EU4%

Fuel burned laden

–

Not reported

CO₂ at berth

4.2%

Alongside in EU ports

Methane (CH₄)

–

LNG engines slip unburnt methane

CO₂eq ÷ CO₂

–

Uplift from CH₄ and N₂O, counted in full from 2026

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 per mile, kg/nm

STENA BLUE SKY
LNG carrier median

200.0400.0600.0800.01,000

’182018’192019’202020’232023

Average speed, kn

STENA BLUE SKY
LNG carrier median

8.010.012.014.016.0

’182018’192019’202020’232023

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

STENA BLUE SKY
LNG carrier median

0.020.040.060.0

’182018’192019’202020’232023

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2020→2023	+4.3 kn	−25%	+10%	+69%	−49%	4.3 kn faster, fuel per mile down 25%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.5 kn	−49%	−52%	+8%	−56%	0.5 kn slower, fuel per mile down 49%; better than speed alone explains (hull, engine or trade).
2018→2019	−3.1 kn	+60%	+22%	−69%	+280%	3.1 kn slower, fuel per mile up 60%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2023LNG	not published	7,060	19,640	22,978	1,686	13.6	307.2	–	–
2020LNG	not published	5,576	15,601	13,607	1,467	9.3	409.8	–	–
2019LNG	not published	10,200	28,426	12,627	1,283	9.8	807.8	–	–
2018LNG	not published	20,531	57,855	40,670	3,146	12.9	504.8	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/m³·nm	LNG carrier median	vs LNG carrier	Rank	Verifier	Methods
2023LNG	not published	12.36	9.10	+36%	269 of 355	DNV	C
2020LNG	not published	24.32	10.71	+127%	254 of 267	DNV	C
2019LNG	not published	55.12	10.87	+407%	245 of 248	Lloyd's Register	C
2018LNG	not published	14.51	10.92	+33%	157 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.