Oil tanker · Liberia flag · built 2004
PUTUOSHAN: CO₂ emissions 2018–2025
IMO 9286542 EU ETS5 reporting years
- CO₂ reported 2025
- 5,825 t
- Fuel burned
- 1,853 t
- Distance
- 27,651 nm
- Time at sea
- 2,390 h
- Emitted at berth
- 6% of total
- Share of year under way
- 27%
- Gross tonnage
- 11,580
PUTUOSHAN against its type
Built in 2004, it is 6 years older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 11,580 gross tonnage it is smaller than 95% 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 52 other vessels here, one of them an oil tanker. Its MRV returns name it RAINBOW ISLAND 88 for 2018–2019 and PUTUOSHAN for 2023–2025. The reported port of registry changed: Hong Kong, China (2018–2019), then Monrovia (2023–2025).
Its 5,825 t of CO₂ for 2025 is 26% below the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 210.7 kg CO₂, 48% below the type median of 403.2 kg. It logged 2,390 hours at sea against a median of 2,030 hours for its type that year. 6.1% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 5 years with reported emissions, the highest was 2025 (5,825 t) and the lowest 2018 (576 t). Its efficiency percentile within the type went from 18 in 2019 to 89 in 2025 (lower is more efficient). Of the 4 comparable vessels listed below with a 2025 return, 1 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 | 5,825 | 1,853 | 27,651 | 2,390 | 355 | 210.7 | 17.1 | 89 |
| 2024 | 2,784 | 893 | 15,404 | 1,340 | 61 | 180.7 | 11.9 | 82 |
| 2023 | 2,249 | 719 | — | 914 | 141 | 232.1 | 33.7 | not ranked |
| 2019 | 1,485 | 476 | 7,284 | 644 | 39 | 203.9 | 10.6 | 18 |
| 2018 | 576 | 185 | — | 242 | 28 | 200.7 | 44.1 | not ranked |
Vessel particulars
- IMO number
- 9286542
- Previously reported as
- RAINBOW ISLAND 88
- Call sign
- 5LHP7
- Ship type
- Oil tanker
- Gross tonnage
- 11,580
- Length overall
- 144.0 m
- Beam
- 24.0 m
- Year built
- 2004
- Flag state
- Liberia per EU MRV 2025
- Builder
- Fukuoka Shipbuilding
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EEXI (7.82 gCO₂/t·nm)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-31
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,284 of 1,448 qualifying oil tankers by EEOI, at the 89th percentile. The dashed line is the type median, 7.5; this vessel reported 17.1.
EEOI divides emissions by transport work, which for this vessel and year was 341,022,248 tonne-miles over 27,651 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 911.6% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2020, 2021, 2022, so the series has gaps.
From 2024 to 2025, emissions rose 109.2% while distance sailed rose 79.5%and CO₂ per nautical mile rose 16.5%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 5,916 t
- Methane (CH₄)
- 0.09 t
- Nitrous oxide (N₂O)
- 0.33 t
- Under EU ETS
- 3,348 t, 57% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Bureau Veritas Certification France | France |
| 2023 | NORMEC VERIFAVIA SAS | France |
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).
This page draws on 5 MRV reporting years, an efficiency ranking, 5 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.