Navalyze · Ro-pax · Ship

STENA BALTICA

IMO: 9329851
Type: Ro-pax ship
Flag (estimated): Denmark
Port of registry: Hellerup
Technical efficiency: EEXI 21.48 g CO₂/t·nm
Ice class: IC
Former names: STENA MERSEY

ISM company (DoC holder) in 2025: Stena Rederi AS · part of Stena

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

148

Ro-pax median 153 kg/nm (−3%)

CO₂ per transport work (pax)

561

g CO₂/pax·nm · Ro-pax median 680 (−17%)

CO₂ per transport work (freight)

184

g CO₂/t·nm · Ro-pax median 234 (−21%)

Average speed

16.2 kn

Ro-pax median 16.0 kn (+1%)

Fuel per day at sea

57.6 t/day

Fuel consumed

11,856 t

CO₂ emitted

37,049 t

Distance sailed

80,167 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,939 h

206 days, 56% 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 137 kg/nm · median 150 (−9%)

69.3Ranks 157 of 408, lowest first232

Average speedThis ship 16.3 kn · median 15.8 (+3%)

12.0Faster than 56% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 432 g CO₂/pax·nm · median 567 (−24%)

66.8Ranks 176 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 141 g CO₂/t·nm · median 253 (−44%)

48.6Ranks 133 of 408, lowest first1,247

Middle 80% of shipsMiddle 50%Ro-pax 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 ports90%
From the EU0%
Into the EU0%
At berth in the EU10%

Fuel burned laden

–

Not reported

CO₂ at berth

3,809 t

10.3% 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 BALTICA
Ro-pax median

130.0140.0150.0160.0

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

Average speed, kn

STENA BALTICA
Ro-pax median

14.015.016.017.018.019.0

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

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

STENA BALTICA
Ro-pax median

0.0100200300

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

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

STENA BALTICA
Ro-pax median

0.05001,0001,5002,000

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.6 kn	−6%	−3%	+8%	−9%	0.6 kn faster, fuel per mile down 6%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.5 kn	−1%	−4%	−29%	−16%	0.5 kn slower, fuel per mile flat.
2022→2023	+1.3 kn	−2%	+7%	+1%	−10%	1.3 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2020→2022	−3.3 kn	−2%	−20%	−13%	−65%	3.3 kn slower, fuel per mile down 2%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.9 kn	+2%	+7%	+2%	+40%	0.9 kn faster, fuel per mile up 2%; better than speed alone explains (hull, engine or trade).
2018→2019	+0.3 kn	−2%	+0%	−8%	−14%	0.3 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 Rederi AS	8,500	26,652	61,895	3,792	16.3	137	–	–
2024	Stena Rederi AS	8,371	26,246	57,226	3,639	15.7	146	–	–
2023	not published	11,856	37,049	80,167	4,939	16.2	148	–	–
2022	not published	11,930	37,275	79,365	5,336	14.9	150	–	–
2020	not published	13,960	43,595	90,720	4,990	18.2	154	–	–
2019	not published	13,421	41,897	89,030	5,147	17.3	151	–	–
2018	not published	14,775	46,139	96,304	5,662	17.0	153	–	–

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 Rederi AS	432	567	−24%	176 of 408	141	253	−44%	DNV	C
2024	Stena Rederi AS	472	547	−14%	189 of 404	182	233	−22%	DNV	C
2023	not published	561	680	−17%	165 of 386	184	234	−21%	DNV	C
2022	not published	621	626	−1%	196 of 394	156	253	−38%	DNV	C
2020	not published	1,767	751	+135%	315 of 387	53.5	217	−75%	Lloyd's Register	C
2019	not published	1,259	569	+121%	323 of 394	43.7	223	−80%	Lloyd's Register	–
2018	not published	1,460	729	+100%	267 of 361	43.2	184	−77%	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.