Chemical tanker · Marshall Islands flag · built 2015
QUARTZ: CO₂ emissions 2018–2025
IMO 9681170 EU ETS7 reporting years
- CO₂ reported 2024
- 1,613 t
- Fuel burned
- 510 t
- Distance
- 5,523 nm
- Time at sea
- 470 h
- Emitted at berth
- 9% of total
- Share of year under way
- 5%
- Gross tonnage
- 29,767
QUARTZ against its type
Built in 2015, it is 5 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 29,767 gross tonnage it is larger than 83% 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 QUARTZ for 2018–2024 and SEAWAYS WATCH HILL for 2025. The returns for 2018–2025 all give Majuro as port of registry.
Its 1,613 t of CO₂ for 2024 is 72% below the median of 5,830 t among the 1,451 chemical tankers on this register that reported for 2024. Per nautical mile it emitted 292.0 kg CO₂, 15% above the type median of 253.5 kg. It logged 470 hours at sea against a median of 2,177 hours for its type that year. 8.6% of its 2024 emissions were at berth; the median for chemical tankers was 5.9%. Across 6 years with reported emissions, the highest was 2019 (11,493 t) and the lowest 2022 (1,496 t). Its efficiency percentile within the type went from 12 in 2018 to 32 in 2024 (lower is more efficient).
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2024 | 1,613 | 510 | 5,523 | 470 | 139 | 292.0 | 11.9 | 32 |
| 2023 | 1,544 | 491 | 5,627 | 447 | 98 | 274.4 | 8.1 | 6 |
| 2022 | 1,496 | 477 | 5,584 | 453 | 190 | 268.0 | 8.5 | 8 |
| 2020 | 3,511 | 1,116 | 13,061 | 1,054 | 573 | 268.8 | 8.9 | 9 |
| 2019 | 11,493 | 3,667 | 38,958 | 3,272 | 1,810 | 295.0 | 8.7 | 8 |
| 2018 | 7,512 | 2,393 | 20,906 | 1,701 | 1,048 | 359.4 | 9.6 | 12 |
Vessel particulars
- IMO number
- 9681170
- Previously reported as
- SEAWAYS WATCH HILL
- Ship type
- Chemical tanker
- Gross tonnage
- 29,767
- Length overall
- 183.0 m
- Beam
- 34.0 m
- Year built
- 2015
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- Majuro MRV 2024
- Home port
- Majuro
- Technical efficiency (design)
- EEDI (4.16 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
- 2025-09-16
- Compliance document expires
- 2026-06-30
Efficiency against its own type2024
Position 387 of 1,194 qualifying chemical tankers by EEOI, at the 32nd percentile. The dashed line is the type median, 15.9; this vessel reported 11.9.
EEOI divides emissions by transport work, which for this vessel and year was 135,764,310 tonne-miles over 5,523 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2024 was 78.5% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2021, so the series has gaps.
From 2023 to 2024, emissions rose 4.4% while distance sailed fell 1.9%and CO₂ per nautical mile rose 6.4%.That points mainly to how efficiently it sailed, rather than the other.
Where the 2024 emissions occurred
Methane, nitrous oxide and EU ETS2024
- Total CO₂ equivalent
- 1,638 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.09 t
- Under EU ETS
- 956 t, 59% of total
Laden voyages2024
- CO₂ on laden voyages
- 1,274 t, 79% of total
- Fuel, laden
- 404 t
- CO₂ per nm, laden
- 275.0 kg
The rest of the 2024 total was emitted on ballast legs or at berth.
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 |
| 2025 | HELLENIC LLOYD'S S.A. | 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, an efficiency ranking, 4 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.