Container ship · Liberia flag · built 2001

MSC RHIANNON: CO₂ emissions 2018–2025

IMO 9224051 EU ETS8 reporting years

CO₂ reported 2025: 8,940 t
Fuel burned: 2,840 t
Distance: 24,876 nm
Time at sea: 2,709 h
Emitted at berth: 7% of total
Share of year under way: 31%
Gross tonnage: 23,652

MSC RHIANNON against its type

Built in 2001, it is 7 years older than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 23,652 gross tonnage it is smaller than 73% of the other 3,000 container ships with a recorded tonnage. It is one of 976 container ships here under the Liberia flag, 27.9% of the 3,495 on the register. The same builder is recorded for 75 other vessels here, 26 of them container ships. The returns for 2018–2025 all give Monrovia as port of registry.

Its 8,940 t of CO₂ for 2025 is 45% 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 359.4 kg CO₂, 34% below the type median of 545.6 kg. It logged 2,709 hours at sea against a median of 3,155 hours for its type that year. 6.6% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 8 years with reported emissions, the highest was 2018 (21,365 t) and the lowest 2025 (8,940 t). Its efficiency percentile within the type went from 79 in 2018 to 78 in 2025 (lower is more efficient). Of the 2 sister ships listed below with a 2025 return, 2 reported a lower CO₂ per nautical mile than this vessel.

Emissions by year2018–2025

Year	CO₂ (t)	Fuel (t)	Distance (nm)	At sea (h)	At berth (t)	kg CO₂/nm	EEOI	Percentile
2025	8,940	2,840	24,876	2,709	592	359.4	24.5	78
2024	13,452	4,292	35,395	3,963	963	380.1	21.3	70
2023	13,899	4,445	28,573	3,789	1,181	486.4	32.6	80
2022	12,597	4,034	31,110	3,197	1,127	404.9	25.6	71
2021	18,466	5,916	45,969	4,173	1,562	401.7	36.5	86
2020	14,454	4,638	42,513	3,834	1,110	340.0	27.6	78
2019	15,138	4,844	36,669	3,639	1,387	412.8	29.3	78
2018	21,365	6,838	53,795	4,787	1,736	397.2	34.3	79

Vessel particulars

IMO number: 9224051
Ship type: Container ship
Gross tonnage: 23,652
Length overall: 188.0 m
Beam: 30.0 m
Year built: 2001
Flag state: Liberia per EU MRV 2025
Builder: Stocznia Gdynia
Port of registry: Monrovia MRV 2025
Technical efficiency (design): EEXI (17.55 gCO₂/t·nm)
Verifier: DNV, Germany
Accreditation: VS-16026-01
Compliance document issued: 2026-03-24
Compliance document expires: 2027-06-30

Efficiency against its own type2025

Position 1,435 of 1,838 qualifying container ships by EEOI, at the 78th percentile. The dashed line is the type median, 14.2; this vessel reported 24.5.

EEOI divides emissions by transport work, which for this vessel and year was 364,581,566 tonne-miles over 24,876 nautical miles.

Reported CO₂ by year

Reported CO₂ in 2025 was 58.2% lower than in 2018, for EU/EEA voyages only.

From 2024 to 2025, emissions fell 33.5% while distance sailed fell 29.7%and CO₂ per nautical mile fell 5.4%.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: 9,079 t
Methane (CH₄): 0.14 t
Nitrous oxide (N₂O): 0.51 t
Under EU ETS: 5,992 t, 67% of total

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 5 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.