Navalyze · Ro-pax · Ship

DROTTEN

IMO: 9223796
Type: Ro-pax ship
Flag (estimated): Sweden
Port of registry: Visby
Technical efficiency: EEXI 21.51 g CO₂/t·nm
Ice class: IA
Former names: GOTLAND

ISM company (DoC holder) in 2025: DESTINATION GOTLAND AB

Report year

2020 at a glance

From the 2020 THETIS-MRV report.

Fuel kg/nm

273

Ro-pax median 157 kg/nm (+74%)

CO₂ per transport work (pax)

479

g CO₂/pax·nm · Ro-pax median 751 (−36%)

CO₂ per transport work (freight)

773

g CO₂/t·nm · Ro-pax median 217 (+255%)

Average speed

22.6 kn

Ro-pax median 15.8 kn (+43%)

Fuel per day at sea

147.8 t/day

Fuel consumed

4,366 t

CO₂ emitted

13,757 t

Distance sailed

16,000 nm

CO₂ ÷ CO₂ per mile

Time at sea

709 h

30 days, 8% 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 229 kg/nm · median 150 (+52%)

69.3Ranks 364 of 408, lowest first232

Average speedThis ship 21.4 kn · median 15.8 (+35%)

12.0Faster than 87% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 524 g CO₂/pax·nm · median 567 (−8%)

66.8Ranks 192 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 437 g CO₂/t·nm · median 253 (+73%)

48.6Ranks 262 of 408, lowest first1,247

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

Where the emissions happen, 2020

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 EU0%
At berth in the EU22%

Fuel burned laden

–

Not reported

CO₂ at berth

3,071 t

22.3% 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-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

DROTTEN
Ro-pax median

150.0200.0250.0300.0

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

Average speed, kn

DROTTEN
Ro-pax median

14.016.018.020.022.024.0

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

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

DROTTEN
Ro-pax median

0.02004006008001,000

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

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

DROTTEN
Ro-pax median

400500600700800900

’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	−0.1 kn	+2%	+2%	+7%	+2%	Same speed, fuel per mile up 2%; in line with the speed change.
2023→2024	−0.6 kn	+4%	+1%	−3%	+8%	0.6 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+0.0 kn	+14%	+15%	−69%	−40%	Same speed, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.5 kn	−7%	−5%	+24%	+11%	0.5 kn faster, fuel per mile down 7%; better than speed alone explains (hull, engine or trade).
2020→2021	−1.0 kn	−26%	−29%	+508%	+50%	1.0 kn slower, fuel per mile down 26%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.1 kn	+13%	+13%	−78%	+7%	Same speed, fuel per mile up 13%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.5 kn	−1%	−4%	−16%	−2%	0.5 kn slower, fuel per mile flat.

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	DESTINATION GOTLAND AB	8,905	28,063	38,936	1,816	21.4	229	–	–
2024	DESTINATION GOTLAND AB	8,130	25,616	36,347	1,688	21.5	224	–	–
2023	not published	8,093	25,500	37,560	1,699	22.1	216	–	–
2022	not published	22,792	71,818	121,001	5,487	22.1	188	–	–
2021	not published	19,630	61,854	97,299	4,508	21.6	202	–	–
2020	not published	4,366	13,757	16,000	709	22.6	273	–	–
2019	not published	17,900	56,403	74,200	3,274	22.7	241	–	–
2018	not published	21,550	67,904	88,100	3,791	23.2	245	–	–

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	DESTINATION GOTLAND AB	524	567	−8%	192 of 408	437	253	+73%	DNV	C
2024	DESTINATION GOTLAND AB	511	547	−6%	197 of 404	468	233	+101%	DNV	C
2023	not published	474	680	−30%	150 of 386	804	234	+244%	MRVControl AB	C
2022	not published	795	626	+27%	225 of 394	669	253	+165%	MRVControl AB	C
2021	not published	717	815	−12%	174 of 377	597	226	+164%	MRVControl AB	C
2020	not published	479	751	−36%	144 of 387	773	217	+255%	MRVControl AB	C
2019	not published	450	569	−21%	167 of 394	787	223	+253%	MRVControl AB	–
2018	not published	461	729	−37%	149 of 361	800	184	+334%	MRVControl AB	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.