Navalyze · Ro-pax · Ship

STENA BRITANNICA

IMO: 9419175
Type: Ro-pax ship
Flag (estimated): United Kingdom
Port of registry: Harwich
Technical efficiency: EEXI 17.28 g CO₂/t·nm
Ice class: IB

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

Report year

2020 at a glance

From the 2020 THETIS-MRV report.

Fuel kg/nm

291

Ro-pax median 157 kg/nm (+86%)

CO₂ per transport work (pax)

1,417

g CO₂/pax·nm · Ro-pax median 751 (+89%)

CO₂ per transport work (freight)

123

g CO₂/t·nm · Ro-pax median 217 (−44%)

Average speed

14.7 kn

Ro-pax median 15.8 kn (−7%)

Fuel per day at sea

102.7 t/day

Fuel consumed

21,435 t

CO₂ emitted

67,118 t

Distance sailed

73,670 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,007 h

209 days, 57% 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 251 kg/nm · median 150 (+67%)

69.3Ranks 388 of 408, lowest first232

Average speedThis ship 15.2 kn · median 15.8 (−4%)

12.0Faster than 40% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 719 g CO₂/pax·nm · median 567 (+27%)

66.8Ranks 238 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 159 g CO₂/t·nm · median 253 (−37%)

48.6Ranks 146 of 408, lowest first1,247

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

Where the emissions happen, 2020

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 ports93%
From the EU0%
Into the EU0%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

4,967 t

7.4% 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 BRITANNICA
Ro-pax median

150.0200.0250.0300.0

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

Average speed, kn

STENA BRITANNICA
Ro-pax median

14.015.016.017.0

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

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

STENA BRITANNICA
Ro-pax median

50.0100150200250300

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

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

STENA BRITANNICA
Ro-pax median

5001,0001,5002,000

’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	+5%	+11%	+4%	+1%	0.8 kn faster, fuel per mile up 5%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.4 kn	−2%	+0%	−4%	−9%	0.4 kn faster, fuel per mile down 2%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.9 kn	−6%	−11%	+3%	+17%	0.9 kn slower, fuel per mile down 6%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.7 kn	+6%	+11%	−3%	−58%	0.7 kn faster, fuel per mile up 6%; in line with the speed change.
2020→2021	−0.5 kn	−16%	−19%	+12%	+13%	0.5 kn slower, fuel per mile down 16%; better than speed alone explains (hull, engine or trade).
2019→2020	−1.0 kn	−1%	−7%	−10%	+111%	1.0 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+1.2 kn	+11%	+21%	−0%	−27%	1.2 kn faster, fuel per mile up 11%; 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	20,646	64,533	82,388	5,422	15.2	251	–	–
2024	Stena Line Ltd	18,783	58,709	78,882	5,478	14.4	238	–	–
2023	not published	20,062	62,689	82,344	5,870	14.0	244	–	–
2022	not published	20,742	64,850	80,177	5,398	14.9	259	–	–
2021	not published	20,042	62,634	82,257	5,785	14.2	244	–	–
2020	not published	21,435	67,118	73,670	5,007	14.7	291	–	–
2019	not published	24,048	75,218	81,979	5,208	15.7	293	–	–
2018	not published	21,639	67,647	82,110	5,679	14.5	264	–	–

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	719	567	+27%	238 of 408	159	253	−37%	DNV	C
2024	Stena Line Ltd	713	547	+30%	243 of 404	140	233	−40%	DNV	C
2023	not published	787	680	+16%	224 of 386	142	234	−39%	DNV	C
2022	not published	675	626	+8%	206 of 394	136	253	−46%	DNV	C
2021	not published	1,596	815	+96%	317 of 377	134	226	−41%	DNV	C
2020	not published	1,417	751	+89%	277 of 387	123	217	−44%	Lloyd's Register	C
2019	not published	672	569	+18%	225 of 394	86.0	223	−61%	Lloyd's Register	–
2018	not published	922	729	+27%	211 of 361	88.6	184	−52%	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.