Navalyze · Ro-ro · Ship

STENA SCOTIA

IMO: 9121625
Type: Ro-ro ship
Average cargo carried: 1,022 t
Flag (estimated): Isle of Man
Port of registry: Douglas
Technical efficiency: EIV 20.88 g CO₂/t·nm

Report year

2019 at a glance

From the 2019 THETIS-MRV report. Carries about 2,672 t of cargo on average.

Fuel kg/nm

99.7

Ro-ro median 107 kg/nm (−7%)

CO₂ per transport work (cargo)

117

g CO₂/t·nm · Ro-ro median 90.9 (+28%)

Average speed

14.9 kn

Ro-ro median 14.8 kn (+1%)

Fuel per day at sea

35.6 t/day

Fuel consumed

6,874 t

CO₂ emitted

21,491 t

Distance sailed

68,970 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,634 h

193 days, 53% of the year

Within the ro-ro fleet, 2021

Set against all 219 ro-ro ships with a full-year 2021 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 94.7 kg/nm · median 109 (−13%)

66.4Ranks 60 of 219, lowest first151

Average speedThis ship 14.8 kn · median 14.8 (+0%)

10.8Faster than 50% of ro-ro ships17.9

CO₂ per transport work (cargo)This ship 290 g CO₂/t·nm · median 104 (+180%)

53.4Ranks 200 of 219, lowest first277

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

Where the emissions happen, 2019

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 ports89%
From the EU0%
Into the EU0%
At berth in the EU11%

Fuel burned laden

6,159 t

90% of all fuel; 10% in ballast or unladen

CO₂ at berth

2,302 t

10.7% 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-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

STENA SCOTIA
Ro-ro median

90.095.0100.0105.0110.0115.0

’182018’192019’202020’212021

Average speed, kn

STENA SCOTIA
Ro-ro median

14.014.314.514.815.0

’182018’192019’202020’212021

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

STENA SCOTIA
Ro-ro median

50.0100150200250300

’182018’192019’202020’212021

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2020→2021	+0.1 kn	−17%	−16%	−90%	+89%	Same speed, fuel per mile down 17%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.2 kn	+14%	+13%	−11%	+32%	Same speed, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.8 kn	−2%	+3%	+18%	−21%	0.8 kn faster, fuel per mile down 2%; 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
2021	not published	588	1,840	6,213	421	14.8	94.7	290	–
2020	not published	6,971	21,854	61,254	4,164	14.7	114	154	90%
2019	not published	6,874	21,491	68,970	4,634	14.9	99.7	117	90%
2018	not published	5,968	18,705	58,440	4,149	14.1	102	149	88%

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2021	not published	290	104	+180%	200 of 219	DNV	C
2020	not published	154	103	+49%	158 of 238	Lloyd's Register	C
2019	not published	117	90.9	+28%	169 of 271	Lloyd's Register	–
2018	not published	149	91.0	+63%	196 of 260	Lloyd's Register	–

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.