Oil tanker · Greece flag · built 2006

PROPONTIS

IMO 9305623 MMSI 240565000EU ETS8 reporting years

CO₂ reported 2025: 20,114 t
Fuel burned: 6,482 t
Distance: 41,508 nm
Time at sea: 3,837 h
Emitted at berth: 9% of total
Share of year under way: 44%
Gross tonnage: 66,919

PROPONTIS — Grzegorz Polak, CC BY-SA 3.0 · File

Vessel particulars

IMO number: 9305623
MMSI: 240565000
Ship type: Oil tanker
Gross tonnage: 66,919
Length overall: 249.0 m
Year built: 2006
Flag state: Greece
Builder: HD Hyundai Heavy Industries
Port of registry: Piraeus
Ice class: IA
Technical efficiency (design): EEXI (3.28 gCO₂/t·nm)
Verifier: HELLENIC LLOYD'S S.A., Greece
Accreditation: 1190
Compliance document issued: 2026-03-02
Compliance document expires: 2027-06-30

Flag state is derived from rapportert, not reported directly, and reflects the registry at the time of reporting.

Efficiency against its own type2025

Position 1,231 of 1,448 qualifying oil tankers by EEOI, at the 85th percentile. The dashed line is the type median, 7.5; this vessel reported 14.3.

EEOI divides emissions by transport work, which for this vessel and year was 1,406,552,448 tonn-nmover 41,508 nautical miles.

Reported CO₂ by year

Between 2018 and 2025 reported CO₂ fell by 37.2%.

From 2024 to 2025, emissions fell 39.2% while distance sailed fell 28.3%and CO₂ per nautical mile fell 15.1%.That points mainly to how much the vessel sailed, rather than the other.

Annual returns2018–2025

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2025	20,114	6,482	41,508	3,837	1,776	484.6	14.3	85
2024	33,067	10,529	57,912	5,976	3,344	571.0	14.3	86
2023	28,114	8,894	42,292	4,015	2,191	664.8	10.5	71
2022	15,651	4,927	28,948	2,830	1,422	540.6	11.9	76
2021	20,542	6,508	36,894	3,880	1,991	556.8	10.9	69
2020	29,793	9,455	50,934	5,481	3,921	584.9	11.5	68
2019	31,473	9,973	54,116	5,362	3,825	581.6	10.2	65
2018	32,045	10,159	53,568	4,627	5,207	598.2	12.7	76

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent: 20,432 t
Methane (CH₄): 0.32 t
Nitrous oxide (N₂O): 1.17 t
Under EU ETS: 10,945 t, 54% of total

Laden voyages2025

CO₂ on laden voyages: 9,714 t, 48% of total
Fuel, laden: 3,060 t
CO₂ per nm, laden: 585.8 kg

The share carried on laden voyages separates productive sailing from ballast legs. For tankers, bulkers and ro-ro vessels that split is the operational question; a low laden share means the ship spent much of the year moving empty.

Observed movementsAIS · Norwegian waters

First seen: 26 Jun 2026
Last seen: 02 Jul 2026
Days observed: 2
Positions: 40
Median speed: 14.1 kn

Positions recorded per month

Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap here means the vessel was not recorded in that area. It is not evidence that the vessel was idle, and not evidence that a transponder was switched off. Voyages elsewhere are outside this dataset.

Verifier history

From reporting year	Verifier	Accredited in
2018	Lloyd's Register Quality Assurance Ltd	United Kingdom
2019	HELLENIC LLOYD'S S.A.	Greece

A change of accredited verifier is shown because it matters for audit and data continuity. It 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.
Movements: Norwegian Coastal Administration open AIS extract.

What this page is built on

Reporting years: 8
Ranked by efficiency: yes
Vessel particulars: 5 of 5
Movement data: yes
Name history: none recorded
Photograph: yes
Sanctions record: none
Inspection record: none in US waters

Caveats that apply to every vessel page

EEOI above 100,000 is withheld. Those values come from returns where reported transport work is near zero, which makes the ratio meaningless rather than extreme. Median across the dataset is around 12.

Emission categories overlap. In the MRV return, emissions at berth are also counted inside the voyage legs, so the categories do not sum to the total. They are shown side by side rather than stacked for that reason.

Distance is derived, intensity is reported. The MRV return publishes CO₂ per nautical mile but not the distance itself, which is null in all 106,564 rows of the source. The distance column is therefore filled from the ranking step, which reconstructs it, and is blank for years where a vessel was not ranked. That is why a row can show an intensity without a distance.

Percentile is within type and year. It is the vessel's position among qualifying ships of the same type that year, where lower is more efficient. A blank means the vessel did not qualify for ranking that year.

Sister ships share a builder, a type and a build year within two years of this vessel. That holds hull and machinery roughly constant and leaves operation as the variable, which is why they are listed before nearest-by-tonnage.

Methane and nitrous oxide start in 2024. They were not reported before that period, so earlier years cannot be compared against them.

Technical efficiency is a design figure fixed at construction. A vessel can hold a good index and still emit heavily by sailing fast, waiting at anchor or carrying little.

Inspection records cover United States waters only. An empty record is not evidence of a clean history elsewhere.

Empty means unreported, never zero. Nothing here is modelled, estimated or interpolated. See the methodology.

Something wrong on this page? See corrections. We do not hold the source registers and cannot amend them, but we will fix anything we have got wrong in reproducing them.