Navalyze · Ro-pax · Ship

AURORA BOTNIA

IMO: 9878319
Type: Ro-pax ship
Flag (estimated): Finland
Port of registry: Vaasa
Ice class: IA Super
Fuel (estimated): Mostly LNG

ISM company (DoC holder) in 2025: NLC FERRY AB OY

Report year

2023 at a glance

From the 2023 THETIS-MRV report.

Fuel kg/nm

71.6

Ro-pax median 153 kg/nm (−53%)

CO₂ per transport work (pax)

215

g CO₂/pax·nm · Ro-pax median 680 (−68%)

CO₂ per transport work (freight)

234

g CO₂/t·nm · Ro-pax median 234 (+0%)

Average speed

12.8 kn

Ro-pax median 16.0 kn (−20%)

Fuel per day at sea

21.9 t/day

Fuel consumed

4,432 t

CO₂ emitted

12,829 t

Distance sailed

61,925 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,849 h

202 days, 55% 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 66.4 kg/nm · median 150 (−56%)

69.3Ranks 38 of 408, lowest first232

Average speedThis ship 13.5 kn · median 15.8 (−15%)

12.0Faster than 25% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 201 g CO₂/pax·nm · median 567 (−65%)

66.8Ranks 121 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 196 g CO₂/t·nm · median 253 (−23%)

48.6Ranks 173 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 ports94%
From the EU0%
Into the EU0%
At berth in the EU6%

Fuel burned laden

–

Not reported

CO₂ at berth

731 t

5.7% 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

AURORA BOTNIA
Ro-pax median

50.075.0100.0125.0150.0175.0

’212021’222022’232023’242024’252025

Average speed, kn

AURORA BOTNIA
Ro-pax median

12.014.016.018.0

’212021’222022’232023’242024’252025

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

AURORA BOTNIA
Ro-pax median

175200225250275300

’212021’222022’232023’242024’252025

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

AURORA BOTNIA
Ro-pax median

2004006008001,000

’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	+1.5 kn	−4%	+8%	−2%	−9%	1.5 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.8 kn	−3%	−9%	−0%	+2%	0.8 kn slower, fuel per mile down 3%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	−1.1 kn	−16%	−23%	+3%	−24%	1.1 kn slower, fuel per mile down 16%; in line with the speed change.
2021→2022	−1.1 kn	−13%	−19%	+196%	−29%	1.1 kn slower, fuel per mile down 13%; 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
2025LNG	NLC FERRY AB OY	4,034	11,070	60,776	4,490	13.5	66.4	–	–
2024LNG	NLC FERRY AB OY	4,284	11,780	61,758	5,153	12.0	69.4	–	–
2023LNG / alt.	not published	4,432	12,829	61,925	4,849	12.8	71.6	–	–
2022	not published	5,119	16,004	60,117	4,324	13.9	85.2	–	–
2021LNG / alt.	not published	1,982	5,774	20,322	1,354	15.0	97.5	–	–

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
2025LNG	NLC FERRY AB OY	201	567	−65%	121 of 408	196	253	−23%	DNV	C
2024LNG	NLC FERRY AB OY	220	547	−60%	125 of 404	200	233	−14%	DNV	B
2023LNG / alt.	not published	215	680	−68%	98 of 386	234	234	+0%	DNV	A+B
2022	not published	282	626	−55%	120 of 394	268	253	+6%	DNV	A+B
2021LNG / alt.	not published	398	815	−51%	133 of 377	294	226	+30%	DNV	A+B

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.