Navalyze · Ro-pax · Ship

BASTØ VI

IMO: 9769219
Type: Ro-pax ship
Flag (estimated): Norway
Port of registry: Horten

ISM company (DoC holder) in 2025: Torghatten Sør AS · part of Torghatten

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel kg/nm

8.30

Ro-pax median 150 kg/nm (−94%)

CO₂ per transport work (pax)

48.2

g CO₂/pax·nm · Ro-pax median 567 (−91%)

CO₂ per transport work (freight)

43.3

g CO₂/t·nm · Ro-pax median 253 (−83%)

Average speed

10.6 kn

Ro-pax median 15.8 kn (−33%)

Fuel per day at sea

2.1 t/day

Fuel consumed

393 t

CO₂ emitted

1,261 t

1,280 t CO₂eq incl. CH₄ and N₂O

Distance sailed

47,517 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,462 h

186 days, 51% 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 8.30 kg/nm · median 150 (−94%)

69.3Ranks 2 of 408, lowest first232

Average speedThis ship 10.6 kn · median 15.8 (−33%)

12.0Faster than 4% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 48.2 g CO₂/pax·nm · median 567 (−91%)

66.8Ranks 21 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 43.3 g CO₂/t·nm · median 253 (−83%)

48.6Ranks 32 of 408, lowest first1,247

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

Where the emissions happen, 2025

THETIS splits each ship's emissions 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 ports73%
From the EU0%
Into the EU0%
At berth in the EU27%

100% of this ship's CO₂ falls under the EU ETS (1,261 t).

Fuel burned laden

–

Not reported

CO₂ at berth

335 t

26.6% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

0.0 t

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

+19 t

+1.5% CO₂eq on top of CO₂ alone, 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 kg/nm

BASTØ VI
Ro-pax median

0.050.0100.0150.0200.0

’212021’222022’232023’242024’252025

Average speed, kn

BASTØ VI
Ro-pax median

10.012.014.016.018.0

’212021’222022’232023’242024’252025

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

BASTØ VI
Ro-pax median

0.0100200300

’212021’222022’232023’242024’252025

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

BASTØ VI
Ro-pax median

0.02004006008001,000

’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	−0.2 kn	−25%	−28%	+4%	−27%	Same speed, fuel per mile down 25%; better than speed alone explains (hull, engine or trade).
2023→2024	−0.1 kn	+141%	+142%	−3%	+139%	Same speed, fuel per mile up 141%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.0 kn	−58%	−59%	+55%	−57%	Same speed, fuel per mile down 58%; better than speed alone explains (hull, engine or trade).
2021→2022	+0.5 kn	−68%	−67%	−30%	−79%	0.5 kn faster, fuel per mile down 68%; 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	Torghatten Sør AS	393	1,261	47,517	4,462	10.6	8.30	–	–
2024	Torghatten Sør AS	506	1,623	45,606	4,228	10.8	11.1	–	–
2023	not published	215	689	46,904	4,308	10.9	4.60	–	–
2022	not published	335	1,074	30,338	2,794	10.9	11.0	–	–
2021	not published	1,499	4,806	43,143	4,139	10.4	34.7	–	–

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	Torghatten Sør AS	48.2	567	−91%	21 of 408	43.3	253	−83%	DNV	A
2024	Torghatten Sør AS	65.7	547	−88%	45 of 404	56.7	233	−76%	DNV	A
2023	not published	27.5	680	−96%	16 of 386	23.1	234	−90%	DNV	A
2022	not published	63.6	626	−90%	34 of 394	56.1	253	−78%	DNV	A
2021	not published	299	815	−63%	116 of 377	178	226	−21%	DNV	A

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.