Oil tanker · Vietnam flag · built 2011
PVT POSEIDON: CO₂ emissions 2018–2025
IMO 9457593 MMSI 566071000EU ETS8 reporting years
- CO₂ reported 2025
- 20,594 t
- Fuel burned
- 6,564 t
- Distance
- 43,340 nm
- Time at sea
- 4,618 h
- Emitted at berth
- 12% of total
- Share of year under way
- 53%
- Gross tonnage
- 59,794
PVT POSEIDON against its type
Built in 2011, it is 1 year newer than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 59,794 gross tonnage it is larger than 51% of the other 2,841 oil tankers with a recorded tonnage. It is the only oil tanker on this register under the Vietnam flag. The same builder is recorded for 103 other vessels here, 28 of them oil tankers. Its MRV returns name it ROSS SEA for 2018–2024 and PVT POSEIDON for 2025. The reported port of registry changed: Singapore (2018–2024), then SAIGON (2025).
Its 20,594 t of CO₂ for 2025 is 2.6 times the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 475.2 kg CO₂, 18% above the type median of 403.2 kg. It logged 4,618 hours at sea against a median of 2,030 hours for its type that year. 11.9% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 8 years with reported emissions, the highest was 2025 (20,594 t) and the lowest 2020 (2,716 t). Its efficiency percentile within the type went from 81 in 2018 to 63 in 2025 (lower is more efficient). Of the 4 sister ships listed below with a 2025 return, 3 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 | 20,594 | 6,564 | 43,340 | 4,618 | 2,455 | 475.2 | 8.6 | 63 |
| 2024 | 14,484 | 4,628 | 35,228 | 2,980 | 1,140 | 411.1 | 9.5 | 70 |
| 2023 | 10,096 | 3,228 | 21,814 | 1,850 | 526 | 462.8 | 7.8 | 48 |
| 2022 | 15,200 | 4,853 | 31,270 | 2,497 | 2,282 | 486.1 | 7.6 | 45 |
| 2021 | 5,084 | 1,623 | 9,637 | 812 | 540 | 527.6 | 6.7 | 33 |
| 2020 | 2,716 | 868 | 3,736 | 271 | 643 | 727.1 | 10.1 | 61 |
| 2019 | 3,873 | 1,238 | 7,022 | 1,228 | 351 | 551.5 | 9.8 | 62 |
| 2018 | 3,713 | 1,188 | 6,526 | 1,180 | 313 | 569.0 | 14.5 | 81 |
Vessel particulars
- IMO number
- 9457593
- Previously reported as
- ROSS SEA
- MMSI
- 566071000
- Ship type
- Oil tanker
- Gross tonnage
- 59,794
- Length overall
- 243.8 m
- Beam
- 42.0 m
- Year built
- 2011
- Flag state
- Vietnam per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Singapore. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Sasebo Heavy Industries
- Port of registry
- SAIGON MRV 2025
- Technical efficiency (design)
- EEXI (3.31 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
- 2026-04-29
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 918 of 1,448 qualifying oil tankers by EEOI, at the 63rd percentile. The dashed line is the type median, 7.5; this vessel reported 8.6.
EEOI divides emissions by transport work, which for this vessel and year was 2,391,852,497 tonne-miles over 43,340 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 454.6% higher than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 42.2% while distance sailed rose 23.0%and CO₂ per nautical mile rose 15.6%.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 20,916 t
- Methane (CH₄)
- 0.33 t
- Nitrous oxide (N₂O)
- 1.18 t
- Under EU ETS
- 1,439 t, 7% of total
Laden voyages2025
- CO₂ on laden voyages
- 11,620 t, 56% of total
- Fuel, laden
- 3,715 t
- CO₂ per nm, laden
- 431.4 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Observed movementsAIS · Norwegian waters
- First seen
- 22 Sep 2025
- Last seen
- 24 Sep 2025
- Days observed
- 3
- Positions
- 103
- Median speed
- 10.6 kn
Its recorded positions span 58.0°N to 60.9°N and 4.4°E to 5.0°E.
31 hourly points from 103 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 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2020 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | 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 8 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.