Oil tanker · Liberia flag · built 2007

NEPTUN

IMO 9312511

CO₂ reported 2018: 13,818 t
Fuel burned: 4,419 t
Distance: 15,104 nm
Time at sea: 1,248 h
Emitted at berth: 10% of total
Share of year under way: 14%
Gross tonnage: 159,911

Vessel particulars

IMO number: 9312511
Ship type: Oil tanker
Gross tonnage: 159,911
Length overall: 334.0 m
Beam: 58.0 m
Year built: 2007
Flag state: Liberia
Port of registry: Majuro
Technical efficiency (design): EIV (2.64 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: 2019-04-24
Compliance document expires: 2020-06-30

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

Efficiency against its own type2018

Position 84 of 1,619 qualifying oil tankers by EEOI, at the 5th percentile. The dashed line is the type median, 8.5; this vessel reported 3.3.

EEOI divides emissions by transport work, which for this vessel and year was 4,238,641,104 tonn-nmover 15,104 nautical miles.

Annual returns2018–2018

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2018	13,818	4,419	15,104	1,248	1,351	914.9	3.3	5

Where the 2018 emissions occurred

Laden voyages2018

CO₂ on laden voyages: 12,467 t, 90% of total
Fuel, laden: 3,998 t

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.

Sources and how to read this

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

What this page is built on

Reporting years: 1
Ranked by efficiency: yes
Vessel particulars: 4 of 5
Movement data: not observed
Name history: none recorded
Photograph: none licensed
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.