Oil tanker · Marshall Islands flag · built 2017

ARISTOKLIS

IMO 9779941 3 reporting years

CO₂ reported 2023: 3,580 t
Fuel burned: 1,137 t
Distance: 7,111 nm
Time at sea: 796 h
Emitted at berth: 19% of total
Share of year under way: 9%
Gross tonnage: 60,751

Vessel particulars

IMO number: 9779941
Previously reported as: SHUSHA
Ship type: Oil tanker
Gross tonnage: 60,751
Length overall: 250.0 m
Beam: 44.0 m
Year built: 2017
Flag state: Marshall Islands
Builder: Daehan Shipbuilding
Port of registry: Baku
Ice class: IC
Technical efficiency (design): EEDI (2.94 gCO₂/t·nm)
Verifier: AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
Accreditation: 1083-2
Compliance document issued: 2024-06-10
Compliance document expires: 2025-06-30

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

Efficiency against its own type2023

Position 988 of 1,615 qualifying oil tankers by EEOI, at the 61th percentile. The dashed line is the type median, 8.0; this vessel reported 9.1.

EEOI divides emissions by transport work, which for this vessel and year was 392,972,558 tonn-nmover 7,111 nautical miles.

Reported CO₂ by year

Between 2020 and 2023 reported CO₂ fell by 36.7%. No return is recorded for 2022, so the series has gaps.

From 2021 to 2023, emissions fell 77.2% while distance sailed fell 81.9%and CO₂ per nautical mile rose 25.7%.That points mainly to how much the vessel sailed, rather than the other.

Annual returns2020–2023

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2023	3,580	1,137	7,111	796	691	503.4	9.1	61
2021	15,696	4,979	39,198	3,929	2,569	400.4	5.5	19
2020	5,657	1,787	16,220	1,590	1,216	348.7	5.3	14

Where the 2023 emissions occurred

Laden voyages2023

CO₂ on laden voyages: 1,689 t, 47% of total
Fuel, laden: 540 t
CO₂ per nm, laden: 358.6 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.

Verifier history

From reporting year	Verifier	Accredited in
2020	HELLENIC LLOYD'S S.A.	Greece
2023	AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD)	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 2020–2023, published by the European Commission.
Vessel particulars: Wikidata (CC0) and Wikimedia Commons.

What this page is built on

Reporting years: 3
Ranked by efficiency: yes
Vessel particulars: 5 of 5
Movement data: not observed
Name history: yes
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.