Navalyze

Navalyze · Ro-ro · Ship

BOTNIA ENABLER

IMO
9884679
Type
Ro-ro ship
Average cargo carried
13,782 t
Flag (estimated)
Sweden
Port of registry
Gothenburg
Technical efficiency
EEXI 6.74 g CO₂/t·nm
Ice class
IA Super
Fuel (estimated)
Mostly LNG

ISM company (DoC holder) in 2025: Wallenius Marine

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2022 at a glance

From the 2022 THETIS-MRV report. Carries about 9,024 t of cargo on average.

Fuel kg/nm
123
Ro-ro median 110 kg/nm (+11%)
CO₂ per transport work (cargo)
43.1
g CO₂/t·nm · Ro-ro median 90.6 (−52%)
Average speed
13.8 kn
Ro-ro median 14.6 kn (−5%)
Fuel per day at sea
40.6 t/day
Fuel consumed
6,358 t
CO₂ emitted
20,170 t
Distance sailed
51,832 nm
CO₂ ÷ CO₂ per mile
Time at sea
3,757 h
157 days, 43% of the year

Within the ro-ro fleet, 2025

Set against all 235 ro-ro 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 140 kg/nm · median 105 (+34%)
56.6Ranks 203 of 235, lowest first145
Average speedThis ship 15.3 kn · median 14.4 (+6%)
10.9Faster than 64% of ro-ro ships17.0
CO₂ per transport work (cargo)This ship 29.7 g CO₂/t·nm · median 95.2 (−69%)
47.4Ranks 2 of 235, lowest first297
Middle 80% of shipsMiddle 50%Ro-ro medianThis ship

Where the emissions happen, 2022

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 ports78%
  • From the EU0%
  • Into the EU17%
  • At berth in the EU5%
Fuel burned laden
–
Not reported
CO₂ at berth
1,065 t
5.3% 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-ro median is the middle ship of all ro-ro ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

  • BOTNIA ENABLER
  • Ro-ro median

Average speed, kn

  • BOTNIA ENABLER
  • Ro-ro median

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

  • BOTNIA ENABLER
  • Ro-ro median

Year on year

YearAverage speedFuel kg/nmFuel per day at seaDistanceCO₂ per transport workReading
2024→2025+1.0 kn+1%+8%+0%+1%1.0 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2023→2024−0.4 kn+7%+4%+1%–0.4 kn slower, fuel per mile up 7%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023+0.9 kn+5%+13%+71%–0.9 kn faster, fuel per mile up 5%; 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

YearISM companyFuel tCO₂ tDistance nmHours at seahAverage speedknots at seaFuel kg/nmthis shipCO₂ per transport work (cargo)g/t·nm, this shipLaden fuel
2025LNGWallenius Marine12,47236,52889,1525,83915.314029.7–
2024LNGWallenius Marine AB12,29135,32588,9666,23014.313829.3–
2023not published11,41434,19788,3835,99314.7129––
2022not published6,35820,17051,8323,75713.812343.1–

Benchmark and verification

YearISM companyCO₂ per TW, g CO₂/t·nmRo-ro medianvs Ro-roRankVerifierMethods
2025LNGWallenius Marine29.795.2−69%2 of 235DNVC
2024LNGWallenius Marine AB29.397.5−70%1 of 220DNVC
2023not published––––DNVC
2022not published43.190.6−52%12 of 223Lloyd's RegisterC

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Ro-ro ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. 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-ro 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.