Bulk carrier · Singapore flag · built 2017

ANSAC COLUMBIA: CO₂ emissions 2018–2023

IMO 9791949 MMSI 6360218873 reporting years

CO₂ reported 2023: 2,513 t
Fuel burned: 798 t
Distance: 10,563 nm
Time at sea: 927 h
Emitted at berth: 10% of total
Share of year under way: 11%
Gross tonnage: 23,306

Emissions by year2018–2023

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2023	2,513	798	10,563	927	264	237.9	9.0	63
2022	2,182	698	10,388	790	122	210.1	14.3	89
2018	No EU/EEA voyages reported

Vessel particulars

IMO number: 9791949
Previously reported as: STELLAR ISABELA
MMSI: 636021887
Call sign: 5LGE4
Ship type: Bulk carrier
Gross tonnage: 23,306
Length overall: 179.9 m
Beam: 29.8 m
Year built: 2017
Flag state: Singapore Wikidata/AIS, undated
Port of registry: MONROVIA MRV 2023
Technical efficiency (design): EEDI (5.42 gCO₂/t·nm)
Verifier: Nippon Kaiji Kyokai, Japan
Accreditation: VS-21325-01
Compliance document issued: 2024-03-19
Compliance document expires: 2025-06-30

Efficiency against its own type2023

Position 2,046 of 3,262 qualifying bulk carriers by EEOI, at the 63th percentile. The dashed line is the type median, 8.0; this vessel reported 9.0.

EEOI divides emissions by transport work, which for this vessel and year was 277,941,372 tonne-miles over 10,563 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2023 was 15.1% higher than in 2022. EU MRV only covers voyages to, from and within the EU/EEA, so a change can reflect where the vessel sailed as much as how much it emitted. No return is recorded for 2019, 2020, 2021, so the series has gaps.

From 2022 to 2023, emissions rose 15.1% while distance sailed rose 1.7%and CO₂ per nautical mile rose 13.2%.That points mainly to how efficiently it sailed, rather than the other.

Where the 2023 emissions occurred

Observed movementsAIS · Norwegian waters

First seen: 19 May 2026
Last seen: 30 May 2026
Days observed: 4
Positions: 308
Median speed: 10.9 kn

Positions come from the Norwegian Coastal Administration's open AIS extract, which covers 01 Jul 2025 to 27 Jul 2026. The register is not updated after 27 Jul 2026, so movements after that date are not included; absence of later positions does not mean the ship stopped sailing.

68 points sampled hourly from 308 recorded positions. The filled circle is the first observed position, the open one the last. Named squares are ports, shown for orientation; they are not recorded calls.

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	VERIFAVIA (UK) LTD	United Kingdom
2022	Nippon Kaiji Kyokai	Japan

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 2018–2023, published by the European Commission.
Vessel particulars: Wikidata (CC0).
Movements: Norwegian Coastal Administration open AIS extract.

What this page is built on

Reporting years: 3
Ranked by efficiency: yes
Vessel particulars: 4 of 5
Movement data: yes
Name history: yes
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.