Chemical tanker · Marshall Islands flag · built 2019
STI MAVERICK: CO₂ emissions 2019–2025
IMO 9833589 MMSI 538010470EU ETS7 reporting years
- CO₂ reported 2025
- 1,045 t
- Fuel burned
- 334 t
- Distance
- 4,227 nm
- Time at sea
- 353 h
- Emitted at berth
- 2% of total
- Share of year under way
- 4%
- Gross tonnage
- 29,991
STI MAVERICK against its type
Built in 2019, it is 9 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 29,991 gross tonnage it is larger than 88% 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. The same builder is recorded for 77 other vessels here, 27 of them chemical tankers. Its MRV returns name it MARLIN MAVERICK for 2019–2020 and STI MAVERICK for 2021–2025. The reported port of registry changed: Singapore (2019–2022), then Majuro (2023–2025).
Its 1,045 t of CO₂ for 2025 is 81% 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 247.3 kg CO₂, close to the type median of 250.2 kg. It logged 353 hours at sea against a median of 2,106 hours for its type that year. 2.2% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 7 years with reported emissions, the highest was 2024 (8,111 t) and the lowest 2025 (1,045 t). Its efficiency percentile within the type went from 4 in 2019 to 16 in 2025 (lower is more efficient). Of the 5 sister ships listed below with a 2025 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 1,045 | 334 | 4,227 | 353 | 23 | 247.3 | 8.7 | 16 |
| 2024 | 8,111 | 2,593 | 31,135 | 2,758 | 363 | 260.5 | 12.1 | 33 |
| 2023 | 3,687 | 1,179 | 14,556 | 1,326 | 82 | 253.3 | 13.6 | 38 |
| 2022 | 1,464 | 469 | 5,329 | 522 | 49 | 274.8 | 9.0 | 10 |
| 2021 | 3,617 | 1,154 | 13,120 | 1,154 | 434 | 275.7 | 12.5 | 29 |
| 2020 | 7,696 | 2,463 | 28,764 | 2,368 | 864 | 267.6 | 8.0 | 5 |
| 2019 | 4,305 | 1,378 | 14,334 | 1,221 | 399 | 300.3 | 7.7 | 4 |
Vessel particulars
- IMO number
- 9833589
- Previously reported as
- MARLIN MAVERICK
- MMSI
- 538010470
- Ship type
- Chemical tanker
- Gross tonnage
- 29,991
- Length overall
- 183.0 m
- Beam
- 32.0 m
- Year built
- 2019
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- Majuro MRV 2025
- Technical efficiency (design)
- EEXI (4.04 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-16
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 212 of 1,348 qualifying chemical tankers by EEOI, at the 16th percentile. The dashed line is the type median, 14.4; this vessel reported 8.7.
EEOI divides emissions by transport work, which for this vessel and year was 120,712,471 tonne-miles over 4,227 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 75.7% lower than in 2019, for EU/EEA voyages only.
From 2024 to 2025, emissions fell 87.1% while distance sailed fell 86.4%and CO₂ per nautical mile fell 5.1%.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
- 1,062 t
- Methane (CH₄)
- 0.02 t
- Nitrous oxide (N₂O)
- 0.06 t
- Under EU ETS
- 534 t, 51% of total
Observed movementsAIS · Norwegian waters
- First seen
- 07 Jul 2026
- Last seen
- 09 Jul 2026
- Days observed
- 3
- Positions
- 122
- Median speed
- 9.8 kn
Its recorded positions span 60.7°N to 60.8°N and 4.4°E to 5.1°E.
57 hourly points from 122 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 |
|---|---|---|
| 2019 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2021 | DNV | Germany |
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 2019–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 7 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.