General cargo ship · Panama flag · built 2011
C. S. STAR: CO₂ emissions 2018–2025
IMO 9496173 MMSI 255915953EU ETS7 reporting years
- CO₂ reported 2025
- 2,512 t
- Fuel burned
- 794 t
- Distance
- 9,440 nm
- Time at sea
- 992 h
- Emitted at berth
- 2% of total
- Share of year under way
- 11%
- Gross tonnage
- 21,487
C. S. STAR against its type
Built in 2011, it is 4 years newer than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 21,487 gross tonnage it is larger than 83% of the other 2,665 general cargo ships with a recorded tonnage. It is one of 310 general cargo ships here under the Panama flag, 10.1% of the 3,081 on the register. The same builder is recorded for 96 other vessels here, 38 of them general cargo ships. Its MRV returns name it C. S. STAR for 2018 and GEM STAR for 2020–2025. The returns for 2021–2025 all give Panama as port of registry.
Its 2,512 t of CO₂ for 2025 is 11% below the median of 2,820 t among the 2,469 general cargo ships on this register that reported for 2025. Per nautical mile it emitted 266.1 kg CO₂, 2.2 times the type median of 122.2 kg. It logged 992 hours at sea against a median of 3,044 hours for its type that year. 1.8% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Across 7 years with reported emissions, the highest was 2021 (7,761 t) and the lowest 2018 (1,902 t). Its efficiency percentile within the type went from 82 in 2018 to 7 in 2025 (lower is more efficient). Of the 6 sister ships listed below with a 2025 return, 6 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 | 2,512 | 794 | 9,440 | 992 | 44 | 266.1 | 13.0 | 7 |
| 2024 | 5,589 | 1,774 | 20,257 | 2,169 | 409 | 275.9 | 14.1 | 21 |
| 2023 | 4,067 | 1,293 | 15,755 | 1,495 | 271 | 258.1 | 13.9 | 28 |
| 2022 | 2,939 | 925 | 10,828 | 1,000 | 244 | 271.4 | 14.6 | 90 |
| 2021 | 7,761 | 2,457 | 31,725 | 2,904 | 346 | 244.7 | 11.9 | 83 |
| 2020 | 6,112 | 1,930 | 27,618 | 2,552 | 417 | 221.3 | 9.7 | 70 |
| 2018 | 1,902 | 609 | 9,331 | 903 | 34 | 203.8 | 11.7 | 82 |
Vessel particulars
- IMO number
- 9496173
- Previously reported as
- GEM STAR
- MMSI
- 255915953
- Call sign
- CQ2411
- Ship type
- General cargo ship
- Gross tonnage
- 21,487
- Length overall
- 177.0 m
- Beam
- 28.6 m
- Year built
- 2011
- Flag state
- Panama per EU MRV 2025
- Builder
- Tsuneishi Kure Dock
- Port of registry
- PANAMA MRV 2025
- Technical efficiency (design)
- EEXI (6.52 gCO₂/t·nm)
- Verifier
- EMICERT, Greece
- Accreditation
- 874-4
- Compliance document issued
- 2026-03-24
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 35 of 479 qualifying general cargo ships by EEOI, at the 7th percentile. The dashed line is the type median, 29.4; this vessel reported 13.0.
EEOI divides emissions by transport work, which for this vessel and year was 192,927,803 tonne-miles over 9,440 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 32.1% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2019, so the series has gaps.
From 2024 to 2025, emissions fell 55.1% while distance sailed fell 53.4%and CO₂ per nautical mile fell 3.6%.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
- 2,551 t
- Methane (CH₄)
- 0.04 t
- Nitrous oxide (N₂O)
- 0.14 t
- Under EU ETS
- 1,278 t, 51% of total
Observed movementsAIS · Norwegian waters
- First seen
- 04 Feb 2026
- Last seen
- 21 Feb 2026
- Days observed
- 5
- Positions
- 271
- Median speed
- 12.0 kn
Its recorded positions span 58.0°N to 64.0°N and 4.5°E to 6.9°E.
72 hourly points from 271 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.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Nippon Kaiji Kyokai | Japan |
| 2020 | EMICERT | Greece |
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).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 7 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, AIS movements in Norwegian waters and a name history. Not found in the sources for this vessel: 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.