Navalyze · Ro-pax · Ship

BALTIC PRINCESS

IMO: 9354284
Type: Ro-pax ship
Flag (estimated): Finland
Port of registry: Mariehamn
Technical efficiency: EIV 2.55 g CO₂/t·nm
Ice class: IA Super

ISM company (DoC holder) in 2025: Tallink Silja Oy

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

184

Ro-pax median 153 kg/nm (+20%)

CO₂ per transport work (pax)

583

g CO₂/pax·nm · Ro-pax median 680 (−14%)

CO₂ per transport work (freight)

101

g CO₂/t·nm · Ro-pax median 234 (−57%)

Average speed

12.7 kn

Ro-pax median 16.0 kn (−21%)

Fuel per day at sea

56.0 t/day

Fuel consumed

16,866 t

CO₂ emitted

54,020 t

Distance sailed

91,507 nm

CO₂ ÷ CO₂ per mile

Time at sea

7,223 h

301 days, 82% 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 188 kg/nm · median 150 (+25%)

69.3Ranks 312 of 408, lowest first232

Average speedThis ship 14.6 kn · median 15.8 (−8%)

12.0Faster than 34% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 696 g CO₂/pax·nm · median 567 (+23%)

66.8Ranks 232 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 104 g CO₂/t·nm · median 253 (−59%)

48.6Ranks 95 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 ports95%
From the EU0%
Into the EU0%
At berth in the EU5%

Fuel burned laden

–

Not reported

CO₂ at berth

2,598 t

4.8% 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

BALTIC PRINCESS
Ro-pax median

140.0160.0180.0200.0

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

Average speed, kn

BALTIC PRINCESS
Ro-pax median

12.013.014.015.016.017.0

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

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

BALTIC PRINCESS
Ro-pax median

0.0100200300

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

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

BALTIC PRINCESS
Ro-pax median

4006008001,0001,200

’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	+0.9 kn	−3%	+4%	−2%	−11%	0.9 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).
2023→2024	+1.0 kn	+5%	+14%	+11%	+34%	1.0 kn faster, fuel per mile up 5%; better than speed alone explains (hull, engine or trade).
2022→2023	−1.3 kn	−0%	−10%	−15%	−8%	1.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−1.0 kn	−1%	−8%	−6%	−39%	1.0 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+0.0 kn	+0%	+1%	−3%	−13%	Same speed, fuel per mile flat.
2019→2020	+0.0 kn	−1%	−2%	+1%	+179%	Same speed, fuel per mile flat.
2018→2019	+0.0 kn	−3%	−3%	+19%	+4%	Same speed, fuel per mile down 3%; in line with the speed change.

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	Tallink Silja Oy	18,744	60,093	99,678	6,809	14.6	188	–	–
2024	Tallink Silja Oy	19,678	62,218	101,916	7,420	13.7	193	–	–
2023	not published	16,866	54,020	91,507	7,223	12.7	184	–	–
2022	not published	19,914	63,845	107,909	7,712	14.0	185	–	–
2021	not published	21,394	67,414	114,870	7,650	15.0	186	–	–
2020	not published	22,004	69,340	118,388	7,918	15.0	186	–	–
2019	not published	22,041	69,451	117,158	7,804	15.0	188	–	–
2018	not published	19,102	60,206	98,273	6,538	15.0	194	–	–

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	Tallink Silja Oy	696	567	+23%	232 of 408	104	253	−59%	Verifavia	C
2024	Tallink Silja Oy	782	547	+43%	255 of 404	106	233	−55%	Verifavia	C
2023	not published	583	680	−14%	172 of 386	101	234	−57%	Verifavia	C
2022	not published	631	626	+1%	198 of 394	46.6	253	−82%	Verifavia	C
2021	not published	1,030	815	+26%	230 of 377	48.1	226	−79%	Verifavia	C
2020	not published	1,184	751	+58%	250 of 387	52.8	217	−76%	Verifavia	C
2019	not published	424	569	−26%	158 of 394	49.3	223	−78%	Verifavia	C
2018	not published	407	729	−44%	138 of 361	48.5	184	−74%	Verifavia	A+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.