Navalyze · Ro-pax · Ship

STENA ADVENTURER

IMO: 9235529
Type: Ro-pax ship
Flag (estimated): United Kingdom
Port of registry: London
Technical efficiency: EEXI 19.59 g CO₂/t·nm
Ice class: IA

ISM company (DoC holder) in 2025: Stena Line Ltd · part of Stena

Report year

2018 at a glance

From the 2018 THETIS-MRV report.

Fuel kg/nm

259

Ro-pax median 158 kg/nm (+64%)

CO₂ per transport work (pax)

1,179

g CO₂/pax·nm · Ro-pax median 729 (+62%)

CO₂ per transport work (freight)

114

g CO₂/t·nm · Ro-pax median 184 (−38%)

Average speed

15.2 kn

Ro-pax median 16.1 kn (−6%)

Fuel per day at sea

94.5 t/day

Fuel consumed

20,673 t

CO₂ emitted

64,555 t

Distance sailed

79,814 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,252 h

219 days, 60% of the year

Within the ro-pax fleet, 2025

Set against all 408 ro-pax 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 228 kg/nm · median 150 (+52%)

69.3Ranks 362 of 408, lowest first232

Average speedThis ship 15.1 kn · median 15.8 (−4%)

12.0Faster than 39% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 1,082 g CO₂/pax·nm · median 567 (+91%)

66.8Ranks 317 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 243 g CO₂/t·nm · median 253 (−4%)

48.6Ranks 196 of 408, lowest first1,247

Middle 80% of shipsMiddle 50%Ro-pax medianThis ship

Where the emissions happen, 2018

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 ports90%
From the EU0%
Into the EU0%
At berth in the EU10%

Fuel burned laden

–

Not reported

CO₂ at berth

6,733 t

10.4% 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 Ro-pax median is the middle ship of all ro-pax ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

STENA ADVENTURER
Ro-pax median

150.0200.0250.0300.0

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

Average speed, kn

STENA ADVENTURER
Ro-pax median

15.016.017.018.0

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

CO₂ per transport work (freight), g CO₂/t·nm

STENA ADVENTURER
Ro-pax median

100150200250300

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

CO₂ per transport work (pax), g CO₂/pax·nm

STENA ADVENTURER
Ro-pax median

5001,0001,5002,0002,500

’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	−0.4 kn	+2%	+0%	+6%	+9%	0.4 kn slower, fuel per mile up 2%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−0.2 kn	+1%	−1%	−7%	−3%	Same speed, fuel per mile flat.
2022→2023	+0.1 kn	+2%	+3%	+1%	−2%	Same speed, fuel per mile flat.
2021→2022	+0.4 kn	−5%	−2%	−5%	−52%	0.4 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2020→2021	−2.5 kn	−1%	−15%	+11%	+11%	2.5 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+1.9 kn	−11%	−1%	−10%	+87%	1.9 kn faster, fuel per mile down 11%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.6 kn	−0%	+4%	+7%	−11%	0.6 kn faster, fuel per mile flat; 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
2025	Stena Line Ltd	18,405	57,481	80,634	5,333	15.1	228	–	–
2024	Stena Line Ltd	16,926	52,838	75,986	4,909	15.5	223	–	–
2023	not published	18,036	56,311	81,518	5,190	15.7	221	–	–
2022	not published	17,603	54,948	80,932	5,198	15.6	218	–	–
2021	not published	19,418	60,635	84,874	5,601	15.2	229	–	–
2020	not published	17,601	55,008	76,508	4,330	17.7	230	–	–
2019	not published	22,013	68,738	85,203	5,385	15.8	258	–	–
2018	not published	20,673	64,555	79,814	5,252	15.2	259	–	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/pax·nm	Ro-pax median	vs Ro-pax	Rank	Freight, g CO₂/t·nm	Ro-pax median	vs Ro-pax	Verifier	Methods
2025	Stena Line Ltd	1,082	567	+91%	317 of 408	243	253	−4%	DNV	C
2024	Stena Line Ltd	996	547	+82%	290 of 404	221	233	−5%	DNV	C
2023	not published	1,028	680	+51%	276 of 386	216	234	−8%	DNV	C
2022	not published	1,046	626	+67%	278 of 394	254	253	+0%	DNV	C
2021	not published	2,173	815	+167%	339 of 377	253	226	+12%	DNV	C
2020	not published	1,967	751	+162%	326 of 387	134	217	−38%	Lloyd's Register	C
2019	not published	1,053	569	+85%	298 of 394	125	223	−44%	Lloyd's Register	–
2018	not published	1,179	729	+62%	246 of 361	114	184	−38%	Lloyd's Register	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Ro-pax ships are benchmarked on CO₂ per transport work (pax) (TW), in g CO₂/pax·nm, and also per tonne of freight (g CO₂/t·nm freight). CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's ro-pax 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.