Oil tanker · Liberia flag · built 2010
BOLERO: CO₂ emissions 2018–2020
IMO 9412335 MMSI 461000240Sanctions listing3 reporting years
- CO₂ reported 2020
- 3,851 t
- Fuel burned
- 1,220 t
- Distance
- 5,791 nm
- Time at sea
- 584 h
- Emitted at berth
- 15% of total
- Share of year under way
- 7%
- Gross tonnage
- 83,747
BOLERO 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). At 83,747 gross tonnage it is larger than 81% of the other 2,841 oil tankers with a recorded tonnage. It is one of 718 oil tankers here under the Liberia flag, 20.2% of the 3,548 on the register. The same builder is recorded for 34 other vessels here, 20 of them oil tankers. The returns for 2018–2020 all give Monrovia as port of registry.
Its 3,851 t of CO₂ for 2020 is 56% below the median of 8,732 t among the 1,884 oil tankers on this register that reported for 2020. Per nautical mile it emitted 664.9 kg CO₂, 1.6 times the type median of 424.6 kg. It logged 584 hours at sea against a median of 1,939 hours for its type that year. 14.7% of its 2020 emissions were at berth; the median for oil tankers was 8.6%. Across 3 years with reported emissions, the highest was 2018 (36,405 t) and the lowest 2020 (3,851 t). Its efficiency percentile within the type went from 41 in 2018 to 35 in 2020 (lower is more efficient).
Emissions by year2018–2020
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2020 | 3,851 | 1,220 | 5,791 | 584 | 567 | 664.9 | 7.2 | 35 |
| 2019 | 23,043 | 7,376 | 35,381 | 2,951 | 1,942 | 651.3 | 6.9 | 32 |
| 2018 | 36,405 | 11,642 | 64,842 | 5,484 | 3,052 | 561.5 | 7.6 | 41 |
Vessel particulars
- IMO number
- 9412335
- Previously reported as
- NS BORA
- MMSI
- 461000240
- Call sign
- A4DS2
- Ship type
- Oil tanker
- Gross tonnage
- 83,747
- Length overall
- 275.0 m
- Beam
- 48.0 m
- Year built
- 2010
- Flag state
- Liberia Wikidata/AIS, undated
- Port of registry
- Monrovia MRV 2020
- Home port
- Monrovia
- Technical efficiency (design)
- EIV (3.7 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2021-06-07
- Compliance document expires
- 2022-06-30
Efficiency against its own type2020
Position 600 of 1,708 qualifying oil tankers by EEOI, at the 35th percentile. The dashed line is the type median, 8.7; this vessel reported 7.2.
EEOI divides emissions by transport work, which for this vessel and year was 532,601,660 tonne-miles over 5,791 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2020 was 89.4% lower than in 2018, for EU/EEA voyages only.
From 2019 to 2020, emissions fell 83.3% while distance sailed fell 83.6%and CO₂ per nautical mile rose 2.1%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2020 emissions occurred
Observed movementsAIS · Norwegian waters
- First seen
- 19 Dec 2025
- Last seen
- 15 Apr 2026
- Days observed
- 7
- Positions
- 419
- Median speed
- 11.6 kn
Its recorded positions span 69.9°N to 71.0°N and 15.5°E to 19.1°E.
36 hourly points from 419 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.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2018–2020, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
- Movements: Norwegian Coastal Administration open AIS extract.
- Sanctions: ofac_sdn.
This page draws on 3 MRV reporting years, an efficiency ranking, 5 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.