Oil tanker · Liberia flag · built 2012
NAVE CASSIOPEIA: CO₂ emissions 2018–2023
IMO 9589932 4 reporting years
- CO₂ reported 2023
- 3,658 t
- Fuel burned
- 1,168 t
- Distance
- 9,574 nm
- Time at sea
- 967 h
- Emitted at berth
- 6% of total
- Share of year under way
- 11%
- Gross tonnage
- 42,341
NAVE CASSIOPEIA against its type
Built in 2012, it is 2 years newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 42,341 gross tonnage it is smaller than 62% 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 196 other vessels here, 75 of them oil tankers. The returns for 2018–2023 all give Monrovia as port of registry.
Its 3,658 t of CO₂ for 2023 is 51% below the median of 7,491 t among the 1,850 oil tankers on this register that reported for 2023. Per nautical mile it emitted 382.1 kg CO₂, close to the type median of 408.5 kg. It logged 967 hours at sea against a median of 1,807 hours for its type that year. 6.0% of its 2023 emissions were at berth; the median for oil tankers was 8.4%. Across 4 years with reported emissions, the highest was 2020 (8,892 t) and the lowest 2023 (3,658 t). Its efficiency percentile within the type went from 40 in 2018 to 31 in 2023 (lower is more efficient). Of the 2 sister ships listed below with a 2023 return, 1 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2018–2023
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2023 | 3,658 | 1,168 | 9,574 | 967 | 218 | 382.1 | 6.3 | 31 |
| 2020 | 8,892 | 2,811 | 20,774 | 2,060 | 512 | 428.1 | 8.8 | 51 |
| 2019 | 8,431 | 2,687 | 23,756 | 2,054 | 513 | 354.9 | 7.6 | 41 |
| 2018 | 3,680 | 1,170 | 8,884 | 872 | 269 | 414.2 | 7.6 | 40 |
Vessel particulars
- IMO number
- 9589932
- Ship type
- Oil tanker
- Gross tonnage
- 42,341
- Length overall
- 228.0 m
- Year built
- 2012
- Flag state
- Liberia Wikidata/AIS, undated
- Port of registry
- Monrovia MRV 2023
- Technical efficiency (design)
- EEXI (4.08 gCO₂/t·nm)
- Verifier
- ICS Verification Services Single Member P.C., Greece
- Accreditation
- 1101-3
- Compliance document issued
- 2024-06-13
- Compliance document expires
- 2025-06-30
Efficiency against its own type2023
Position 499 of 1,615 qualifying oil tankers by EEOI, at the 31st percentile. The dashed line is the type median, 8.0; this vessel reported 6.3.
EEOI divides emissions by transport work, which for this vessel and year was 580,653,968 tonne-miles over 9,574 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2023 was 0.6% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2021, 2022, so the series has gaps.
From 2020 to 2023, emissions fell 58.9% while distance sailed fell 53.9%and CO₂ per nautical mile fell 10.7%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2023 emissions occurred
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 |
| 2023 | ICS Verification Services Single Member P.C. | 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 2018–2023, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 4 MRV reporting years, an efficiency ranking and 5 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, 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.