Navalyze · Ro-pax · Ship

OPTIMA SEAWAYS

IMO: 9188427
Type: Ro-pax ship
Flag (estimated): Lithuania
Port of registry: Klaipeda
Technical efficiency: EEXI 22.42 g CO₂/t·nm

ISM company (DoC holder) in 2025: AB DFDS Seaways · part of DFDS

Report year

2018 at a glance

From the 2018 THETIS-MRV report. Carries about 2,444 t of cargo on average.

Fuel kg/nm

135

Ro-pax median 158 kg/nm (−15%)

CO₂ per transport work (pax)

2,265

g CO₂/pax·nm · Ro-pax median 729 (+211%)

CO₂ per transport work (freight)

–

g CO₂/t·nm

Average speed

16.7 kn

Ro-pax median 16.1 kn (+4%)

Fuel per day at sea

54.1 t/day

Fuel consumed

10,687 t

CO₂ emitted

33,391 t

Distance sailed

79,194 nm

CO₂ ÷ CO₂ per mile

Time at sea

4,745 h

198 days, 54% 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 148 kg/nm · median 150 (−2%)

69.3Ranks 195 of 408, lowest first232

Average speedThis ship 18.9 kn · median 15.8 (+20%)

12.0Faster than 76% of ro-pax ships22.3

CO₂ per transport work (pax)This ship 3,241 g CO₂/pax·nm · median 567 (+472%)

66.8Ranks 396 of 408, lowest first1,569

CO₂ per transport work (freight)This ship 63.4 g CO₂/t·nm · median 253 (−75%)

48.6Ranks 51 of 408, lowest first1,247

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

Where the emissions happen, 2018

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 ports92%
From the EU0%
Into the EU0%
At berth in the EU8%

Fuel burned laden

–

Not reported

CO₂ at berth

2,561 t

7.7% 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-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

OPTIMA SEAWAYS
Ro-pax median

130.0140.0150.0160.0

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

Average speed, kn

OPTIMA SEAWAYS
Ro-pax median

14.016.018.020.0

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

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

OPTIMA SEAWAYS
Ro-pax median

0.0100200300

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

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

OPTIMA SEAWAYS
Ro-pax median

0.01,0002,0003,0004,000

’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	−0.4 kn	−1%	−3%	+10%	−15%	0.4 kn slower, fuel per mile flat.
2023→2024	+0.1 kn	−1%	−0%	−20%	+136%	Same speed, fuel per mile flat.
2022→2023	+4.2 kn	+4%	+32%	+88%	+73%	4.2 kn faster, fuel per mile up 4%; better than speed alone explains (hull, engine or trade).
2021→2022	−2.7 kn	−2%	−17%	−27%	+15%	2.7 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.1 kn	+6%	+12%	−1%	−11%	1.1 kn faster, fuel per mile up 6%; better than speed alone explains (hull, engine or trade).
2019→2020	+0.0 kn	+2%	+3%	+17%	+57%	Same speed, fuel per mile up 2%; in line with the speed change.
2018→2019	−0.1 kn	+2%	+1%	−8%	−74%	Same speed, 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	AB DFDS Seaways	14,937	46,696	101,197	5,362	18.9	148	–	–
2024	AB DFDS Seaways	13,732	42,936	92,062	4,771	19.3	149	–	–
2023	not published	17,325	54,150	114,665	5,988	19.2	151	–	–
2022	not published	8,898	27,843	61,080	4,073	15.0	146	–	–
2021	not published	12,423	38,816	83,867	4,746	17.7	148	–	–
2020	not published	11,915	37,217	84,899	5,101	16.6	140	–	–
2019	not published	9,947	31,085	72,627	4,373	16.6	137	–	–
2018	not published	10,687	33,391	79,194	4,745	16.7	135	173	–

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	AB DFDS Seaways	3,241	567	+472%	396 of 408	63.4	253	−75%	DNV	B
2024	AB DFDS Seaways	3,824	547	+599%	379 of 404	53.0	233	−77%	DNV	B+C
2023	not published	1,617	680	+138%	342 of 386	171	234	−27%	DNV	B+C
2022	not published	934	626	+49%	254 of 394	132	253	−48%	DNV	B+C
2021	not published	813	815	−0%	188 of 377	142	226	−37%	Verifavia	B+C
2020	not published	915	751	+22%	211 of 387	162	217	−26%	Verifavia	B+C
2019	not published	583	569	+3%	204 of 394	129	223	−42%	Verifavia	B+C
2018	not published	2,265	729	+211%	310 of 361	–	–	–	Verifavia	B+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.