Navalyze · Ro-pax · Ship

STENA BALTICA

IMO: 9329851
Type: Ro-pax ship
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

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

137.3 kg/nm

Ro-pax median 150.2 kg/nm (−9%)

CO₂ per transport work (pax)

432

g CO₂/pax·nm · Ro-pax median 567 (−24%)

CO₂ per transport work (freight)

141

g CO₂/t·nm · Ro-pax median 253 (−44%)

Average speed

16.3 kn

Ro-pax median 15.8 kn (+3%)

Fuel per day at sea

53.8 t/day

Fuel consumed

8,500 t

CO₂ emitted

26,652 t

27,069 t CO₂eq incl. CH₄ and N₂O

Distance sailed

61,895 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,792 h

158 days, 43% 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 per mileThis ship 137.3 kg/nm · median 150.2 (−9%)

69.3Ranks 157 of 408, lowest first232.4

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 432.14 g CO₂/pax·nm · median 566.51 (−24%)

66.76Ranks 176 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 140.70 g CO₂/t·nm · median 253.18 (−44%)

48.59Ranks 133 of 408, lowest first1,247.19

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

Where the emissions happen, 2025

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 ports84%
From the EU0%
Into the EU0%
At berth in the EU16%

100% of this ship's CO₂ falls under the EU ETS (26,652 t).

Fuel burned laden

–

Not reported

CO₂ at berth

16.0%

Alongside in EU ports

Methane (CH₄)

0.4 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

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 per mile, 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	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Stena Rederi AS	8,500	26,652	61,895	3,792	16.3	137.3	–	–
2024	Stena Rederi AS	8,371	26,246	57,226	3,639	15.7	146.3	–	–
2023	not published	11,856	37,049	80,167	4,939	16.2	147.9	–	–
2022	not published	11,930	37,275	79,365	5,336	14.9	150.3	–	–
2020	not published	13,960	43,595	90,720	4,990	18.2	153.9	–	–
2019	not published	13,421	41,897	89,030	5,147	17.3	150.8	–	–
2018	not published	14,775	46,139	96,304	5,662	17.0	153.4	–	–

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	432.14	566.51	−24%	176 of 408	140.70	253.18	−44%	DNV	C
2024	Stena Rederi AS	472.30	546.68	−14%	189 of 404	182.18	232.85	−22%	DNV	C
2023	not published	561.44	680.04	−17%	165 of 386	184.31	233.94	−21%	DNV	C
2022	not published	621.29	626.32	−1%	196 of 394	156.00	252.90	−38%	DNV	C
2020	not published	1,766.90	750.91	+135%	315 of 387	53.49	217.49	−75%	Lloyd's Register	C
2019	not published	1,259.27	569.03	+121%	323 of 394	43.69	222.56	−80%	Lloyd's Register	–
2018	not published	1,459.79	728.92	+100%	267 of 361	43.20	184.05	−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.