Container ship · Liberia flag · built 2019
YM WELLSPRING: CO₂ emissions 2019–2025
IMO 9757230 EU ETS5 reporting years
- CO₂ reported 2025
- 1,953 t
- Fuel burned
- 629 t
- Distance
- 2,556 nm
- Time at sea
- 294 h
- Emitted at berth
- 8% of total
- Share of year under way
- 3%
- Gross tonnage
- 150,000
YM WELLSPRING against its type
Built in 2019, it is 11 years newer than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 150,000 gross tonnage it is larger than 90% 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 reported port of registry changed: Panama (2019–2022), then MONROVIA (2025).
Its 1,953 t of CO₂ for 2025 is 88% 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 764.0 kg CO₂, 40% above the type median of 545.6 kg. It logged 294 hours at sea against a median of 3,155 hours for its type that year. 8.3% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 5 years with reported emissions, the highest was 2020 (34,106 t) and the lowest 2025 (1,953 t). Its efficiency percentile within the type went from 17 in 2019 to 29 in 2025 (lower is more efficient). Of the 6 comparable vessels 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 | 1,953 | 629 | 2,556 | 294 | 163 | 764.0 | 9.7 | 29 |
| 2022 | 13,213 | 4,187 | 15,316 | 1,023 | 1,478 | 862.7 | 7.3 | 11 |
| 2021 | 10,958 | 3,473 | 14,541 | 866 | 412 | 753.6 | 7.1 | 9 |
| 2020 | 34,106 | 10,910 | 46,071 | 2,663 | 1,765 | 740.3 | 6.5 | 8 |
| 2019 | 8,201 | 2,626 | 11,075 | 859 | 776 | 740.5 | 9.0 | 17 |
Vessel particulars
- IMO number
- 9757230
- Ship type
- Container ship
- Gross tonnage
- 150,000
- Length overall
- 366.0 m
- Year built
- 2019
- Flag state
- Liberia per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Panama. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- MONROVIA MRV 2025
- Home port
- MONROVIA
- Technical efficiency (design)
- EEXI (8.64 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-27
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 530 of 1,838 qualifying container ships by EEOI, at the 29th percentile. The dashed line is the type median, 14.2; this vessel reported 9.7.
EEOI divides emissions by transport work, which for this vessel and year was 201,124,614 tonne-miles over 2,556 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 76.2% lower than in 2019, for EU/EEA voyages only. No return is recorded for 2023, 2024, so the series has gaps.
From 2022 to 2025, emissions fell 85.2% while distance sailed fell 83.3%and CO₂ per nautical mile fell 11.4%.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
- 1,984 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.11 t
- Under EU ETS
- 909 t, 47% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2019 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2020 | Nippon Kaiji Kyokai | Japan |
| 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 2019–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 5 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.