Oil tanker · Oman flag · built 2010
RIGEL: CO₂ emissions 2018–2022
IMO 9511533 MMSI 461000256Sanctions listing5 reporting years
- CO₂ reported 2022
- 9,215 t
- Fuel burned
- 2,923 t
- Distance
- 22,177 nm
- Time at sea
- 2,503 h
- Emitted at berth
- 11% of total
- Share of year under way
- 29%
RIGEL against its type
Built in 2010, it is the same age as the median oil tanker on this register (build year 2010, 2,896 vessels with a known build year). It is one of 3 oil tankers here under the Oman flag, 0.1% of the 3,548 on the register. The same builder is recorded for 461 other vessels here, 179 of them oil tankers. The returns for 2018–2022 all give Monrovia as port of registry.
Its 9,215 t of CO₂ for 2022 is 28% above the median of 7,189 t among the 1,939 oil tankers on this register that reported for 2022. Per nautical mile it emitted 415.5 kg CO₂, close to the type median of 415.9 kg. It logged 2,503 hours at sea against a median of 1,731 hours for its type that year. 10.7% of its 2022 emissions were at berth; the median for oil tankers was 9.1%. Across 5 years with reported emissions, the highest was 2018 (30,364 t) and the lowest 2022 (9,215 t). Its efficiency percentile within the type went from 48 in 2018 to 33 in 2022 (lower is more efficient). Of the 3 sister ships listed below with a 2022 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2018–2022
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2022 | 9,215 | 2,923 | 22,177 | 2,503 | 985 | 415.5 | 6.6 | 33 |
| 2021 | 23,041 | 7,330 | 47,486 | 4,718 | 5,018 | 485.2 | 7.0 | 36 |
| 2020 | 18,457 | 5,861 | 28,853 | 3,014 | 4,588 | 639.7 | 12.1 | 72 |
| 2019 | 28,456 | 9,073 | 49,371 | 5,294 | 5,722 | 576.4 | 11.8 | 73 |
| 2018 | 30,364 | 9,646 | 63,580 | 5,838 | 4,170 | 477.6 | 8.3 | 48 |
Vessel particulars
- IMO number
- 9511533
- Previously reported as
- PRIMORSKY PROSPECT
- MMSI
- 461000256
- Call sign
- A4DV7
- Ship type
- Oil tanker
- Length overall
- 250.0 m
- Beam
- 44.0 m
- Year built
- 2010
- Flag state
- Oman Wikidata/AIS, undated
- Builder
- HD Hyundai Samho
- Port of registry
- Monrovia MRV 2022
- Home port
- Monrovia
- Ice class
- IB
- Technical efficiency (design)
- EIV (3.95 gCO₂/t·nm)
- Verifier
- Indian Register of Shipping, India
- Accreditation
- V 107
- Compliance document issued
- 2023-05-30
- Compliance document expires
- 2024-06-30
Efficiency against its own type2022
Position 588 of 1,771 qualifying oil tankers by EEOI, at the 33rd percentile. The dashed line is the type median, 8.0; this vessel reported 6.6.
EEOI divides emissions by transport work, which for this vessel and year was 1,404,762,195 tonne-miles over 22,177 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2022 was 69.7% lower than in 2018, for EU/EEA voyages only.
From 2021 to 2022, emissions fell 60.0% while distance sailed fell 53.3%and CO₂ per nautical mile fell 14.4%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2022 emissions occurred
Observed movementsAIS · Norwegian waters
- First seen
- 16 Aug 2025
- Last seen
- 12 Jan 2026
- Days observed
- 6
- Positions
- 408
- Median speed
- 10.2 kn
Its recorded positions span 58.0°N to 71.0°N and 4.5°E to 19.2°E.
36 hourly points from 408 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.
Sanctions listings
| List | Programme | Listed | Delisted |
|---|---|---|---|
| ofac_sdn | UKRAINE-EO13662] [RUSSIA-EO14024 | — | Still listed |
Reproduced from the published source register as of the build date, and not legal advice. A listing attaches to the vessel with this IMO number; ownership and management may have changed since. Check the issuing authority before relying on it.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2021 | Indian Register of Shipping | India |
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 2018–2022, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
- Movements: Norwegian Coastal Administration open AIS extract.
- Sanctions: ofac_sdn.
This page draws on 5 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars, AIS movements in Norwegian waters, a name history and a sanctions listing. Not found in the sources for this vessel: a licensed photograph 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.