AUTOSUN: CO₂ emissions 2018–2025

AUTOSUN against its type

Built in 2000, it is 2 years older than the median ro-ro ship on this register, which was built in 2002 (281 vessels with a known build year). At 21,094 gross tonnage it is smaller than 51% of the other 269 ro-ro ships with a recorded tonnage. It is one of 16 ro-ro ships here under the Portugal flag, 5.1% of the 311 on the register. The same builder is recorded for 360 other vessels here, 4 of them ro-ro ships. The returns for 2018–2025 all give Madeira as port of registry.

Its 18,705 t of CO₂ for 2025 is 12% below the median of 21,362 t among the 238 ro-ro ships on this register that reported for 2025. Per nautical mile it emitted 308.6 kg CO₂, close to the type median of 327.0 kg. It logged 5,151 hours at sea against a median of 4,872 hours for its type that year. 2.2% of its 2025 emissions were at berth; the median for ro-ro ships was 4.3%. Across 8 years with reported emissions, the highest was 2018 (24,154 t) and the lowest 2023 (15,437 t). Its efficiency percentile within the type went from 90 in 2018 to 80 in 2025 (lower is more efficient). Of the 3 sister ships listed below with a 2025 return, 1 reported a lower CO₂ per nautical mile than this vessel.

Emissions by year2018–2025

Vessel particulars

IMO number

9227053

Ship type

Ro-ro ship

Gross tonnage

21,094

Year built

2000

Flag state

Portugal per EU MRV 2025

Builder

Tsuneishi Shipbuilding

Port of registry

Madeira MRV 2025

Ice class

IA

Technical efficiency (design)

EEXI (42 gCO₂/t·nm)

Verifier

DNV, Germany

Accreditation

VS-16026-01

Compliance document issued

2026-02-19

Compliance document expires

2027-06-30

Efficiency against its own type2025

Position 153 of 192 qualifying ro-ro ships by EEOI, at the 80th percentile. The dashed line is the type median, 85.3; this vessel reported 148.4.

EEOI divides emissions by transport work, which for this vessel and year was 126,001,347 tonne-miles over 60,606 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 22.6% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions rose 8.0% while distance sailed rose 1.6%and CO₂ per nautical mile rose 6.3%.That points mainly to how efficiently it sailed, rather than the other.

Where the 2025 emissions occurred

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent

18,996 t

Methane (CH₄)

0.30 t

Nitrous oxide (N₂O)

1.07 t

Under EU ETS

10,434 t, 56% of total

Verifier history

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 8 MRV reporting years, an efficiency ranking and 4 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.

Comparable vesselssister ships and nearest by tonnage

• AUTOSKY sister · 2000 · 21,010 GT · 23,527 t · 334.4 kg/nm
• AUTOSTAR sister · 2000 · 21,010 GT · 21,845 t · 314.1 kg/nm
• TREASURE sister · 1999 · 58,684 GT · 6,401 t · 299.9 kg/nm
• ADELINE 2012 · 21,020 GT · 11,131 t · 222.8 kg/nm
• MSC BRIDGE 1998 · 21,104 GT · 12,848 t · 376.3 kg/nm
• WILHELMINE 2012 · 21,020 GT · 11,235 t · 226.6 kg/nm
• CITY OF ROTTERDAM 2011 · 21,143 GT · 11,282 t · 168.3 kg/nm
• SARDINIA 2004 · 21,171 GT · 5,038 t · 502.7 kg/nm