Navalyze · Ro-ro · Ship

SUMELA SEAWAYS

IMO: 9356749
Type: Ro-ro ship
Average cargo carried: 5,803 t
Flag (estimated): Turkiye
Port of registry: Istanbul
Technical efficiency: EEXI 12.60 g CO₂/t·nm
Former names: UN KARADENIZ

ISM company (DoC holder) in 2025: DFDS DENIZCILIK VE TASIMACILIK A.S. · part of DFDS

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 5,599 t of cargo on average.

Fuel kg/nm

120

Ro-ro median 109 kg/nm (+10%)

CO₂ per transport work (cargo)

67.0

g CO₂/t·nm · Ro-ro median 104 (−35%)

Average speed

17.4 kn

Ro-ro median 14.8 kn (+18%)

Fuel per day at sea

50.3 t/day

Fuel consumed

12,165 t

CO₂ emitted

37,901 t

Distance sailed

101,007 nm

CO₂ ÷ CO₂ per mile

Time at sea

5,803 h

242 days, 66% 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 113 kg/nm · median 105 (+8%)

56.6Ranks 139 of 235, lowest first145

Average speedThis ship 17.2 kn · median 14.4 (+19%)

10.9Faster than 91% of ro-ro ships17.0

CO₂ per transport work (cargo)This ship 60.7 g CO₂/t·nm · median 95.2 (−36%)

47.4Ranks 49 of 235, lowest first297

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

Where the emissions happen, 2021

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 ports1%
From the EU49%
Into the EU49%
At berth in the EU1%

Fuel burned laden

–

Not reported

CO₂ at berth

356 t

0.9% 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

SUMELA SEAWAYS
Ro-ro median

100.0105.0110.0115.0120.0125.0

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

Average speed, kn

SUMELA SEAWAYS
Ro-ro median

14.016.018.020.0

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

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

SUMELA SEAWAYS
Ro-ro median

60.080.0100120

’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	+0.5 kn	+0%	+3%	−2%	−2%	0.5 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2023→2024	−0.2 kn	−8%	−9%	+24%	−1%	Same speed, fuel per mile down 8%; better than speed alone explains (hull, engine or trade).
2022→2023	−0.4 kn	+0%	−2%	−18%	−2%	0.4 kn slower, fuel per mile flat.
2021→2022	−0.1 kn	+2%	+1%	+18%	−4%	Same speed, fuel per mile flat.
2020→2021	−0.1 kn	+1%	+1%	−2%	−16%	Same speed, fuel per mile flat.
2019→2020	−0.7 kn	−1%	−5%	−5%	+11%	0.7 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	−0.6 kn	−0%	−3%	−0%	−8%	0.6 kn slower, fuel per mile flat; 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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	DFDS DENIZCILIK VE TASIMACILIK A.S.	13,336	41,544	117,954	6,851	17.2	113	60.7	–
2024	DFDS DENIZCILIK VE TASIMACILIK A.S.	13,607	42,396	120,507	7,209	16.7	113	62.1	–
2023	not published	11,933	37,170	97,079	5,743	16.9	123	63.0	–
2022	not published	14,572	45,387	118,936	6,868	17.3	123	64.1	–
2021	not published	12,165	37,901	101,007	5,803	17.4	120	67.0	–
2020	not published	12,327	38,405	103,459	5,923	17.5	119	79.8	–
2019	not published	13,126	40,912	109,432	6,004	18.2	120	72.1	–
2018	not published	13,215	41,161	109,819	5,837	18.8	120	78.1	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Ro-ro median	vs Ro-ro	Rank	Verifier	Methods
2025	DFDS DENIZCILIK VE TASIMACILIK A.S.	60.7	95.2	−36%	49 of 235	DNV	B
2024	DFDS DENIZCILIK VE TASIMACILIK A.S.	62.1	97.5	−36%	39 of 220	DNV	A+C
2023	not published	63.0	109	−42%	38 of 221	DNV	A
2022	not published	64.1	90.6	−29%	43 of 223	DNV	A
2021	not published	67.0	104	−35%	53 of 219	Lloyd's Register	A
2020	not published	79.8	103	−22%	80 of 238	Lloyd's Register	A
2019	not published	72.1	90.9	−21%	76 of 271	Lloyd's Register	–
2018	not published	78.1	91.0	−14%	89 of 260	DNV	A

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.