Chemical tanker · Portugal flag · built 2013
ROLAND ESSBERGER: CO₂ emissions 2022–2025
IMO 9504217 MMSI 255801280EU ETS4 reporting years
- CO₂ reported 2025
- 9,132 t
- Fuel burned
- 2,854 t
- Distance
- 47,626 nm
- Time at sea
- 4,235 h
- Emitted at berth
- 10% of total
- Share of year under way
- 48%
- Gross tonnage
- 6,583
ROLAND ESSBERGER against its type
Built in 2013, it is 3 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 6,583 gross tonnage it is smaller than 92% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 71 chemical tankers here under the Portugal flag, 3.0% of the 2,344 on the register. The returns for 2022–2025 all give Madeira as port of registry.
Its 9,132 t of CO₂ for 2025 is 1.7 times the median of 5,533 t among the 1,483 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 191.7 kg CO₂, 23% below the type median of 250.2 kg. It logged 4,235 hours at sea against a median of 2,109 hours for its type that year. 9.8% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 4 years with reported emissions, the highest was 2025 (9,132 t) and the lowest 2022 (5,113 t). Its efficiency percentile within the type went from 91 in 2022 to 97 in 2025 (lower is more efficient). Of the 7 comparable vessels listed below with a 2025 return, 2 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2022–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 9,132 | 2,854 | 47,626 | 4,235 | 899 | 191.7 | 47.8 | 97 |
| 2024 | 7,307 | 2,293 | 36,105 | 3,213 | 1,179 | 202.4 | 54.5 | 97 |
| 2023 | 8,588 | 2,700 | 45,053 | 4,195 | 933 | 190.6 | 39.4 | 90 |
| 2022 | 5,113 | 1,595 | 26,823 | 2,674 | 456 | 190.6 | 38.6 | 91 |
Vessel particulars
- IMO number
- 9504217
- MMSI
- 255801280
- Call sign
- CQMZ
- Ship type
- Chemical tanker
- Gross tonnage
- 6,583
- Length overall
- 119.6 m
- Beam
- 18.6 m
- Year built
- 2013
- Flag state
- Portugal per EU MRV 2025
- Port of registry
- Madeira MRV 2025
- Technical efficiency (design)
- EIV (16 gCO₂/t·nm)
- Verifier
- EnvService GmbH, Germany
- Accreditation
- D-VS-20809-01-00
- Compliance document issued
- 2026-03-02
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,303 of 1,348 qualifying chemical tankers by EEOI, at the 97th percentile. The dashed line is the type median, 14.4; this vessel reported 47.8.
EEOI divides emissions by transport work, which for this vessel and year was 191,042,050 tonne-miles over 47,626 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 78.6% higher than in 2022, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 25.0% while distance sailed rose 31.9%and CO₂ per nautical mile fell 5.3%.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
- 9,272 t
- Methane (CH₄)
- 0.14 t
- Nitrous oxide (N₂O)
- 0.51 t
- Under EU ETS
- 8,351 t, 91% of total
Observed movementsAIS · Norwegian waters
- First seen
- 14 Aug 2025
- Last seen
- 25 Mar 2026
- Days observed
- 5
- Positions
- 518
- Median speed
- 11.5 kn
Its recorded positions span 58.0°N to 60.4°N and 4.5°E to 10.3°E.
77 hourly points from 518 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.
Positions recorded per month
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.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2022–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
- Movements: Norwegian Coastal Administration open AIS extract.
This page draws on 4 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars and AIS movements in Norwegian waters. Not found in the sources for this vessel: a name history, 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.