Ro-ro ship · Türkiye flag · built 2008

SUMELA SEAWAYS: CO₂ emissions 2018–2025

IMO 9356749 EU ETS8 reporting years

CO₂ reported 2025: 41,544 t
Fuel burned: 13,336 t
Distance: 117,954 nm
Time at sea: 6,851 h
Emitted at berth: 1% of total
Share of year under way: 78%

SUMELA SEAWAYS against its type

Built in 2008, it is 6 years newer than the median ro-ro ship on this register, which was built in 2002 (281 vessels with a known build year). It is one of 18 ro-ro ships here under the Türkiye flag, 5.8% of the 311 on the register. The same builder is recorded for 59 other vessels here, 45 of them ro-ro ships. Its MRV returns name it UN KARADENIZ for 2018 and SUMELA SEAWAYS for 2019–2025. The returns for 2018–2025 all give Istanbul as port of registry.

Its 41,544 t of CO₂ for 2025 is 1.9 times the median of 21,362 t among the 238 ro-ro ships on this register that reported for 2025. Per nautical mile it emitted 352.2 kg CO₂, close to the type median of 327.0 kg. It logged 6,851 hours at sea against a median of 4,872 hours for its type that year. 0.8% of its 2025 emissions were at berth; the median for ro-ro ships was 4.3%. Across 8 years with reported emissions, the highest was 2022 (45,387 t) and the lowest 2023 (37,170 t). Its efficiency percentile within the type went from 37 in 2018 to 25 in 2025 (lower is more efficient). Of the 8 sister ships listed below with a 2025 return, 5 reported a lower CO₂ per nautical mile than this vessel.

Emissions by year2018–2025

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2025	41,544	13,336	117,954	6,851	339	352.2	60.7	25
2024	42,396	13,607	120,507	7,209	356	351.8	62.1	20
2023	37,170	11,933	97,079	5,743	372	382.9	63.0	21
2022	45,387	14,572	118,936	6,868	367	381.6	64.1	22
2021	37,901	12,165	101,007	5,803	355	375.2	67.0	27
2020	38,405	12,327	103,459	5,923	398	371.2	79.8	39
2019	40,912	13,126	109,432	6,004	312	373.9	72.0	31
2018	41,161	13,215	109,820	5,837	406	374.8	78.1	37

Vessel particulars

IMO number: 9356749
Previously reported as: UN KARADENIZ
Ship type: Ro-ro ship
Length overall: 223.3 m
Beam: 26.0 m
Year built: 2008
Flag state: Türkiye per EU MRV 2025
Builder: Flensburger Schiffbau-Gesellschaft
Port of registry: Istanbul MRV 2025
Technical efficiency (design): EEXI (12.6 gCO₂/t·nm)
Verifier: DNV, Germany
Accreditation: VS-16026-01
Compliance document issued: 2026-02-06
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 48 of 192 qualifying ro-ro ships by EEOI, at the 25th percentile. The dashed line is the type median, 85.3; this vessel reported 60.7.

EEOI divides emissions by transport work, which for this vessel and year was 684,535,838 tonne-miles over 117,954 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 0.9% higher than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 2.0% while distance sailed fell 2.1%and CO₂ per nautical mile rose 0.1%.That points mainly to how much the vessel sailed, rather than the other.

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 42,199 t
Methane (CH₄): 0.67 t
Nitrous oxide (N₂O): 2.40 t
Under EU ETS: 21,947 t, 53% of total

Verifier history

From reporting year	Verifier	Accredited in
2018	DNV	Germany
2019	HELLENIC LLOYD'S S.A.	Greece
2022	DNV	Germany

A change of verifier is not in itself a sign of anything being wrong.

Sources and how to read this

Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2025, published by the European Commission.
Vessel particulars: Wikidata (CC0) and Wikimedia Commons.

This page draws on 8 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, a sanctions listing and US port state inspections.

Empty means unreported, never zero. How EEOI, distance, percentiles and sister ships are handled is explained under reading a vessel page. Something wrong? See corrections.