Bulk carrier · Liberia flag · built 2006
POLARSTAR: CO₂ emissions 2018–2025
IMO 9310757 MMSI 636018306EU ETS7 reporting years
- CO₂ reported 2025
- 643 t
- Fuel burned
- 202 t
- Distance
- 3,600 nm
- Time at sea
- 291 h
- Share of year under way
- 3%
POLARSTAR against its type
Built in 2006, it is 6 years older than the median bulk carrier on this register, which was built in 2012 (6,882 vessels with a known build year). It is one of 1,589 bulk carriers here under the Liberia flag, 19.5% of the 8,138 on the register. The same builder is recorded for 96 other vessels here, 50 of them bulk carriers. Its MRV returns name it POLARSTAR for 2018–2022 and PRIMUS for 2024–2025. The returns for 2019–2025 all give MONROVIA as port of registry.
Its 643 t of CO₂ for 2025 is 80% below the median of 3,239 t among the 3,731 bulk carriers on this register that reported for 2025. Per nautical mile it emitted 178.5 kg CO₂, 32% below the type median of 260.7 kg. It logged 291 hours at sea against a median of 1,200 hours for its type that year. 0.0% of its 2025 emissions were at berth; the median for bulk carriers was 3.7%. Across 6 years with reported emissions, the highest was 2021 (7,399 t) and the lowest 2025 (643 t). Its efficiency percentile within the type went from 75 in 2018 to 23 in 2025 (lower is more efficient). Of the 4 sister ships listed below with a 2025 return, 0 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 | 643 | 202 | 3,600 | 291 | 0 | 178.5 | 5.8 | 23 |
| 2024 | 3,199 | 1,017 | 15,417 | 1,480 | 130 | 207.5 | 8.4 | 56 |
| 2022 | No EU/EEA voyages reported | |||||||
| 2021 | 7,399 | 2,359 | 31,660 | 2,867 | 476 | 233.7 | 8.8 | 56 |
| 2020 | 2,341 | 746 | 9,115 | 1,462 | 46 | 256.8 | 10.7 | 77 |
| 2019 | 5,197 | 1,658 | 24,397 | 2,164 | 212 | 213.0 | 10.1 | 71 |
| 2018 | 6,304 | 2,007 | 22,587 | 1,880 | 588 | 279.1 | 10.6 | 75 |
Vessel particulars
- IMO number
- 9310757
- Previously reported as
- PRIMUS
- MMSI
- 636018306
- Call sign
- D5PD3
- Ship type
- Bulk carrier
- Length overall
- 177.0 m
- Beam
- 28.0 m
- Year built
- 2006
- Flag state
- Liberia per EU MRV 2025
- Builder
- Tsuneishi Kure Dock
- Port of registry
- MONROVIA MRV 2025
- Home port
- MONROVIA
- Technical efficiency (design)
- EIV (6.38 gCO₂/t·nm)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-30
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 745 of 3,241 qualifying bulk carriers by EEOI, at the 23rd percentile. The dashed line is the type median, 7.6; this vessel reported 5.8.
EEOI divides emissions by transport work, which for this vessel and year was 111,003,454 tonne-miles over 3,600 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 89.8% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2023, so the series has gaps.
From 2024 to 2025, emissions fell 79.9% while distance sailed fell 76.6%and CO₂ per nautical mile fell 14.0%.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
- 653 t
- Methane (CH₄)
- 0.01 t
- Nitrous oxide (N₂O)
- 0.04 t
- Under EU ETS
- 321 t, 50% of total
Observed movementsAIS · Norwegian waters
- First seen
- 20 Jun 2026
- Last seen
- 26 Jul 2026
- Days observed
- 5
- Positions
- 271
- Median speed
- 12.8 kn
Its recorded positions span 69.9°N to 71.0°N and 15.5°E to 19.1°E.
24 hourly points from 271 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.
Positions recorded per month
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.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | EMICERT | Greece |
| 2024 | NORMEC VERIFAVIA SAS | France |
A change of verifier 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.
This page draws on 7 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars, AIS movements in Norwegian waters, a name history and a licensed photograph. Not found in the sources for this vessel: 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.