Bulk carrier · Portugal flag · built 2016
RUBY CONFIDENCE: CO₂ emissions 2020–2025
IMO 9802413 5 reporting years
- CO₂ reported 2023
- 3,913 t
- Fuel burned
- 1,236 t
- Distance
- 19,999 nm
- Time at sea
- 1,750 h
- Emitted at berth
- 3% of total
- Share of year under way
- 20%
- Gross tonnage
- 23,885
RUBY CONFIDENCE against its type
Built in 2016, it is 4 years newer than the median bulk carrier on this register, which was built in 2012 (6,882 vessels with a known build year). At 23,885 gross tonnage it is smaller than 80% of the other 6,571 bulk carriers with a recorded tonnage. It is one of 157 bulk carriers here under the Portugal flag, 1.9% of the 8,138 on the register. Its MRV returns name it SUPREME STAR for 2020 and RUBY CONFIDENCE for 2021–2025. The reported port of registry changed: PANAMA (2020), then MADEIRA (2021–2025).
Its 3,913 t of CO₂ for 2023 is 16% above the median of 3,386 t among the 3,573 bulk carriers on this register that reported for 2023. Per nautical mile it emitted 195.7 kg CO₂, 28% below the type median of 272.6 kg. It logged 1,750 hours at sea against a median of 1,186 hours for its type that year. 2.8% of its 2023 emissions were at berth; the median for bulk carriers was 4.3%. Across 4 years with reported emissions, the highest was 2022 (7,295 t) and the lowest 2020 (3,530 t). Its efficiency percentile within the type went from 54 in 2020 to 81 in 2023 (lower is more efficient).
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2023 | 3,913 | 1,236 | 19,999 | 1,750 | 111 | 195.7 | 11.4 | 81 |
| 2022 | 7,295 | 2,304 | 33,241 | 2,836 | 450 | 219.5 | 7.8 | 42 |
| 2021 | 6,482 | 2,051 | 31,860 | 2,759 | 599 | 203.4 | 12.2 | 84 |
| 2020 | 3,530 | 1,119 | 17,199 | 1,381 | 90 | 205.2 | 8.3 | 54 |
Vessel particulars
- IMO number
- 9802413
- Previously reported as
- SUPREME STAR
- Ship type
- Bulk carrier
- Gross tonnage
- 23,885
- Length overall
- 183.0 m
- Beam
- 29.5 m
- Year built
- 2016
- Flag state
- Portugal per EU MRV 2025
- Port of registry
- MADEIRA MRV 2023
- Technical efficiency (design)
- EEDI (2 gCO₂/t·nm)
- Verifier
- Nippon Kaiji Kyokai, Japan
- Accreditation
- VS-21325-01
- Compliance document issued
- 2024-03-12
- Compliance document expires
- 2025-06-30
Efficiency against its own type2023
Position 2,635 of 3,262 qualifying bulk carriers by EEOI, at the 81st percentile. The dashed line is the type median, 8.0; this vessel reported 11.4.
EEOI divides emissions by transport work, which for this vessel and year was 342,958,808 tonne-miles over 19,999 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2023 was 10.9% higher than in 2020, for EU/EEA voyages only. No return is recorded for 2024, so the series has gaps.
From 2022 to 2023, emissions fell 46.4% while distance sailed fell 39.8%and CO₂ per nautical mile fell 10.8%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2023 emissions occurred
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2020–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 5 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.