Container ship · Portugal flag · built 2006

MASTERY D: CO₂ emissions 2019–2025

IMO 9301201 EU ETS7 reporting years

CO₂ reported 2025: 4,191 t
Fuel burned: 1,340 t
Time at sea: 1,538 h
Emitted at berth: 2% of total
Share of year under way: 18%
Gross tonnage: 8,971

MASTERY D 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 8,971 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 52 other vessels here, 7 of them container ships. The reported port of registry changed: Monrovia (2019–2023), then Madeira (2024–2025).

Its 4,191 t of CO₂ for 2025 is 74% 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 238.4 kg CO₂, 56% below the type median of 545.6 kg. It logged 1,538 hours at sea against a median of 3,155 hours for its type that year. 1.5% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 7 years with reported emissions, the highest was 2021 (14,007 t) and the lowest 2025 (4,191 t). Its efficiency percentile within the type went from 92 in 2020 to 96 in 2024 (lower is more efficient). Of the 4 sister ships listed below with a 2025 return, 3 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	4,191	1,340	—	1,538	64	238.4	42.7	not ranked
2024	12,257	3,927	53,645	4,825	405	228.5	51.6	96
2023	12,375	3,892	56,821	4,880	812	217.8	46.8	91
2022	11,075	3,463	52,166	5,324	327	212.3	57.7	97
2021	14,007	4,414	55,692	4,883	748	251.5	48.1	93
2020	12,946	4,075	48,532	4,715	1,329	266.8	45.2	92
2019	9,196	2,909	—	3,110	993	254.4	63.0	not ranked

Vessel particulars

IMO number: 9301201
Ship type: Container ship
Gross tonnage: 8,971
Length overall: 154.6 m
Year built: 2006
Flag state: Portugal per EU MRV 2025
Builder: Volharding Shipyards
Port of registry: Madeira MRV 2025
Ice class: IA
Technical efficiency (design): EEXI (25.91 gCO₂/t·nm)
Efficiency ranking: Not ranked: transport work below the floor (2025)
Verifier: RINA HELLAS LTD, Greece
Accreditation: 1325
Compliance document issued: 2026-03-06
Compliance document expires: 2027-06-30

Reported CO₂ by year

Reported CO₂ in 2025 was 54.4% lower than in 2019, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 65.8% and CO₂ per nautical mile rose 4.3%.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: 4,256 t
Methane (CH₄): 0.07 t
Nitrous oxide (N₂O): 0.24 t
Under EU ETS: 3,017 t, 72% of total

Laden voyages2025

CO₂ on laden voyages: 4,191 t, 100% of total
Fuel, laden: 1,340 t
CO₂ per nm, laden: 238.4 kg

The rest of the 2025 total was emitted on ballast legs or at berth.

Verifier history

From reporting year	Verifier	Accredited in
2019	DNV	Germany
2025	RINA HELLAS LTD	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 2019–2025, published by the European Commission.
Vessel particulars: Wikidata (CC0) and Wikimedia Commons.

This page draws on 7 MRV reporting years, 5 of 5 vessel particulars and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, a name history, 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.