Chemical tanker · Malta flag · built 2010
KONGO STAR: CO₂ emissions 2018–2025
IMO 9508823 MMSI 248439000EU ETS8 reporting years
- CO₂ reported 2025
- 6,833 t
- Fuel burned
- 2,133 t
- Distance
- 28,572 nm
- Time at sea
- 3,248 h
- Emitted at berth
- 15% of total
- Share of year under way
- 37%
- Gross tonnage
- 8,581
KONGO STAR against its type
Built in 2010, it is the same age as the median chemical tanker on this register (build year 2010, 1,951 vessels with a known build year). At 8,581 gross tonnage it is smaller than 84% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 218 chemical tankers here under the Malta flag, 9.3% of the 2,344 on the register. The returns for 2018–2025 all give Valletta as port of registry.
Its 6,833 t of CO₂ for 2025 is 23% above the median of 5,533 t among the 1,483 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 239.2 kg CO₂, close to the type median of 250.2 kg. It logged 3,248 hours at sea against a median of 2,109 hours for its type that year. 15.3% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 8 years with reported emissions, the highest was 2019 (9,563 t) and the lowest 2023 (5,574 t). Its efficiency percentile within the type went from 90 in 2018 to 97 in 2025 (lower is more efficient). Of the 6 comparable vessels listed below with a 2025 return, 4 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 | 6,833 | 2,133 | 28,572 | 3,248 | 1,047 | 239.2 | 50.9 | 97 |
| 2024 | 7,595 | 2,378 | 35,838 | 3,828 | 867 | 211.9 | 48.4 | 95 |
| 2023 | 5,574 | 1,751 | 29,262 | 2,869 | 465 | 190.5 | 43.8 | 93 |
| 2022 | 6,519 | 2,046 | 34,639 | 3,405 | 1,430 | 188.2 | 43.8 | 95 |
| 2021 | 6,572 | 2,064 | 32,318 | 3,452 | 1,044 | 203.3 | 29.7 | 82 |
| 2020 | 7,193 | 2,255 | 31,707 | 4,039 | 1,222 | 226.8 | 35.4 | 88 |
| 2019 | 9,563 | 3,018 | 42,928 | 6,494 | 1,372 | 222.8 | 36.9 | 89 |
| 2018 | 8,125 | 2,545 | 36,562 | 6,057 | 1,726 | 222.2 | 39.1 | 90 |
Vessel particulars
- IMO number
- 9508823
- MMSI
- 248439000
- Ship type
- Chemical tanker
- Gross tonnage
- 8,581
- Length overall
- 128.6 m
- Beam
- 20.4 m
- Year built
- 2010
- Flag state
- Malta per EU MRV 2025
- Port of registry
- Valletta MRV 2025
- Technical efficiency (design)
- EEXI (10.6 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-09
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,312 of 1,348 qualifying chemical tankers by EEOI, at the 97th percentile. The dashed line is the type median, 14.4; this vessel reported 50.9.
EEOI divides emissions by transport work, which for this vessel and year was 134,376,991 tonne-miles over 28,572 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 15.9% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 10.0% while distance sailed fell 20.3%and CO₂ per nautical mile rose 12.8%.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
- 6,938 t
- Methane (CH₄)
- 0.11 t
- Nitrous oxide (N₂O)
- 0.38 t
- Under EU ETS
- 6,165 t, 90% of total
Observed movementsAIS · Norwegian waters
- First seen
- 07 Jun 2026
- Last seen
- 13 Jun 2026
- Days observed
- 7
- Positions
- 217
- Median speed
- 10.2 kn
Its recorded positions span 60.7°N to 60.8°N and 4.4°E to 5.1°E.
146 hourly points from 217 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.
Norwegian Coastal Administration open AIS, Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap means the vessel was not recorded here, not that it was idle or that a transponder was off.
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).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 8 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars and AIS movements in Norwegian waters. Not found in the sources for this vessel: a name history, a licensed photograph, 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.