Chemical tanker · Marshall Islands flag · built 2011
DIAMOND-T: CO₂ emissions 2018–2025
IMO 9499371 EU ETS7 reporting years
- CO₂ reported 2025
- 3,125 t
- Fuel burned
- 993 t
- Time at sea
- 734 h
- Emitted at berth
- 7% of total
- Share of year under way
- 8%
- Gross tonnage
- 17,712
DIAMOND-T against its type
Built in 2011, it is 1 year newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 17,712 gross tonnage it is smaller than 58% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 474 chemical tankers here under the Marshall Islands flag, 20.2% of the 2,344 on the register. Its MRV returns name it DIAMOND-T for 2018–2022, JAY 2 for 2024 and FIYUH for 2025. The reported port of registry changed: Panama (2018–2022), then Majuro (2024–2025).
Its 3,125 t of CO₂ for 2025 is 44% below the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 536.2 kg CO₂, 2.1 times the type median of 250.2 kg. It logged 734 hours at sea against a median of 2,106 hours for its type that year. 6.6% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 7 years with reported emissions, the highest was 2018 (10,702 t) and the lowest 2025 (3,125 t). Its efficiency percentile within the type went from 52 in 2018 to 67 in 2022 (lower is more efficient). Of the 6 comparable vessels listed below with a 2025 return, 6 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 | 3,125 | 993 | — | 734 | 207 | 536.2 | 208.9 | not ranked |
| 2024 | 3,467 | 1,105 | — | 213 | 0 | 1,780.1 | — | — |
| 2022 | 5,175 | 1,638 | 13,791 | 1,212 | 1,524 | 375.3 | 20.3 | 67 |
| 2021 | 9,954 | 3,159 | 37,434 | 3,220 | 284 | 265.9 | 16.7 | 53 |
| 2020 | 6,307 | 2,000 | 21,825 | 1,940 | 151 | 289.0 | 20.6 | 69 |
| 2019 | 4,464 | 1,427 | 14,900 | 1,499 | 96 | 299.6 | 18.6 | 59 |
| 2018 | 10,702 | 3,419 | 33,628 | 3,311 | 243 | 318.3 | 16.9 | 52 |
Vessel particulars
- IMO number
- 9499371
- Previously reported as
- JAY 2, FIYUH
- Ship type
- Chemical tanker
- Gross tonnage
- 17,712
- Length overall
- 169.9 m
- Beam
- 25.4 m
- Year built
- 2011
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- Majuro MRV 2025
- Home port
- Marshall islands
- Ice class
- IA
- Technical efficiency (design)
- EEXI (6.74 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- ICS Verification Services Single Member P.C., Greece
- Accreditation
- 1101-3
- Compliance document issued
- 2026-03-29
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 70.8% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2023, so the series has gaps.
From 2024 to 2025, emissions fell 9.9% and CO₂ per nautical mile fell 69.9%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 3,173 t
- Methane (CH₄)
- 0.05 t
- Nitrous oxide (N₂O)
- 0.18 t
- Under EU ETS
- 668 t, 21% of total
Laden voyages2025
- CO₂ on laden voyages
- 382 t, 12% of total
- Fuel, laden
- 122 t
- CO₂ per nm, laden
- 522.8 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | VERIFAVIA (UK) LTD | United Kingdom |
| 2020 | NORMEC VERIFAVIA SAS | France |
| 2024 | 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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 7 MRV reporting years, 4 of 5 vessel particulars and a name history. Not found in the sources for this vessel: an efficiency ranking, 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.