Navalyze · Ro-pax · Ship

VISBORG

IMO: 9223784
Type: Ro-pax ship
Port of registry: Valletta
Technical efficiency: EEXI 23.78 g CO₂/t·nm
Ice class: IA
Former names: VISBY

ISM company (DoC holder) in 2025: Wallenius Marine · part of Wallenius Wilhelmsen

Report year

2025 at a glance

From the 2025 THETIS-MRV report.

Fuel per mile

174.3 kg/nm

Ro-pax median 150.2 kg/nm (+16%)

CO₂ per transport work (pax)

841

g CO₂/pax·nm · Ro-pax median 567 (+49%)

CO₂ per transport work (freight)

215

g CO₂/t·nm · Ro-pax median 253 (−15%)

Average speed

16.7 kn

Ro-pax median 15.8 kn (+6%)

Fuel per day at sea

69.8 t/day

Fuel consumed

11,459 t

CO₂ emitted

36,096 t

36,659 t CO₂eq incl. CH₄ and N₂O

Distance sailed

65,732 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,938 h

164 days, 45% 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 per mileThis ship 174.3 kg/nm · median 150.2 (+16%)

69.3Ranks 277 of 408, lowest first232.4

Average speedThis ship 16.7 kn · median 15.8 (+6%)

12.0Faster than 60% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 841.43 g CO₂/pax·nm · median 566.51 (+49%)

66.76Ranks 269 of 408, lowest first1,568.87

CO₂ per transport work (freight)This ship 214.82 g CO₂/t·nm · median 253.18 (−15%)

48.59Ranks 182 of 408, lowest first1,247.19

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

Where the emissions happen, 2025

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 ports57%
From the EU16%
Into the EU17%
At berth in the EU10%

45% of this ship's CO₂ falls under the EU ETS (16,112 t).

Fuel burned laden

–

Not reported

CO₂ at berth

10.0%

Alongside in EU ports

Methane (CH₄)

0.6 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift 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 per mile, kg/nm

VISBORG
Ro-pax median

150.0175.0200.0225.0250.0

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

Average speed, kn

VISBORG
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

VISBORG
Ro-pax median

0.02004006008001,000

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

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

VISBORG
Ro-pax median

0.02,5005,0007,50010,000

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2024→2025	−0.6 kn	−12%	−15%	−12%	−18%	0.6 kn slower, fuel per mile down 12%; better than speed alone explains (hull, engine or trade).
2023→2024	+0.3 kn	−0%	+2%	+26%	−22%	0.3 kn faster, fuel per mile flat.
2022→2023	−3.7 kn	−1%	−18%	−46%	−86%	3.7 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.2 kn	−0%	−1%	−5%	–	Same speed, fuel per mile flat.
2020→2021	−0.9 kn	−12%	−16%	+58%	–	0.9 kn slower, fuel per mile down 12%; in line with the speed change.
2019→2020	−1.1 kn	−7%	−11%	−6%	+2%	1.1 kn slower, fuel per mile down 7%; in line with the speed change.
2018→2019	−0.4 kn	+2%	+0%	−20%	+4%	0.4 kn slower, fuel per mile up 2%; worse than speed alone explains (fouling, weather, loading 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	Wallenius Marine	11,459	36,096	65,732	3,938	16.7	174.3	–	–
2024	Wallenius Marine AB	14,779	46,242	74,329	4,303	17.3	198.8	–	–
2023	not published	11,762	37,098	59,122	3,483	17.0	198.9	–	–
2022	not published	21,806	68,711	108,849	5,258	20.7	200.3	–	–
2021	not published	22,873	72,074	114,115	5,464	20.9	200.4	–	–
2020	not published	16,450	51,834	72,100	3,312	21.8	228.2	–	–
2019	not published	18,800	59,239	77,000	3,362	22.9	244.2	–	–
2018	not published	23,160	72,977	96,800	4,152	23.3	239.3	–	–

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	Wallenius Marine	841.43	566.51	+49%	269 of 408	214.82	253.18	−15%	DNV	C
2024	Wallenius Marine AB	1,020.73	546.68	+87%	298 of 404	314.18	232.85	+35%	DNV	C
2023	not published	1,311.53	680.04	+93%	324 of 386	377.11	233.94	+61%	DNV	C
2022	not published	9,053.29	626.32	+1,345%	393 of 394	309.15	252.90	+22%	Lloyd's Register	C
2021	not published	–	–	–	–	–	–	–	Lloyd's Register	C
2020	not published	457.13	750.91	−39%	137 of 387	717.30	217.49	+230%	MRVControl AB	C
2019	not published	450.34	569.03	−21%	168 of 394	801.37	222.56	+260%	MRVControl AB	–
2018	not published	433.79	728.92	−40%	144 of 361	763.18	184.05	+315%	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.