Container ship · Portugal flag · built 2006
DIANA B: CO₂ emissions 2021–2025
IMO 9344239 EU ETS2 reporting years
- CO₂ reported 2025
- 2,543 t
- Fuel burned
- 813 t
- Time at sea
- 864 h
- Emitted at berth
- 11% of total
- Share of year under way
- 10%
- Gross tonnage
- 8,280
DIANA B against its type
Built in 2006, it is 2 years older than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 8,280 gross tonnage it is smaller than 95% of the other 3,000 container ships with a recorded tonnage. It is one of 307 container ships here under the Portugal flag, 8.8% of the 3,495 on the register. The same builder is recorded for 35 other vessels here, 26 of them container ships. Boluda Corporación Marítima is linked to 2 vessels on this register. Its MRV returns name it DIANA J for 2021 and DIANA B for 2025. The reported port of registry changed: SAINT-JOHN'S (2021), then Madeira (2025).
Its 2,543 t of CO₂ for 2025 is 84% below the median of 16,359 t among the 2,234 container ships on this register that reported for 2025. Per nautical mile it emitted 240.0 kg CO₂, 56% below the type median of 545.6 kg. It logged 864 hours at sea against a median of 3,155 hours for its type that year. 10.7% of its 2025 emissions were at berth; the median for container ships was 3.2%. Of the 8 sister ships listed below with a 2025 return, 5 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2021–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 2,543 | 813 | — | 864 | 272 | 240.0 | 108.2 | not ranked |
| 2021 | 2,996 | 943 | — | 786 | 667 | 300.9 | 115.5 | not ranked |
Vessel particulars
- IMO number
- 9344239
- Previously reported as
- DIANA J
- Ship type
- Container ship
- Gross tonnage
- 8,280
- Length overall
- 139.6 m
- Beam
- 22.4 m
- Year built
- 2006
- Flag state
- Portugal per EU MRV 2025
- Builder
- Rolandwerft
- Port of registry
- Madeira MRV 2025
- Technical efficiency (design)
- EEXI (26.08 gCO₂/t·nm)
- Operator
- Boluda Corporación Marítima
- Efficiency ranking
- Not ranked: transport work below the floor (2025)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-31
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 15.1% lower than in 2021, for EU/EEA voyages only. No return is recorded for 2022, 2023, 2024, so the series has gaps.
From 2021 to 2025, emissions fell 15.1% and CO₂ per nautical mile fell 20.2%.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
- 2,583 t
- Methane (CH₄)
- 0.04 t
- Nitrous oxide (N₂O)
- 0.15 t
- Under EU ETS
- 919 t, 36% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2021 | RINA Services Spa | Italy |
| 2025 | 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 2021–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 2 MRV reporting years, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, 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.