General cargo ship · Marshall Islands flag · built 2012
CORELEADER OL: CO₂ emissions 2018–2025
IMO 9597678 EU ETS2 reporting years
- CO₂ reported 2025
- 779 t
- Fuel burned
- 246 t
- Time at sea
- 287 h
- Emitted at berth
- 4% of total
- Share of year under way
- 3%
- Gross tonnage
- 22,866
CORELEADER OL against its type
Built in 2012, it is 5 years newer than the median general cargo ship on this register, which was built in 2007 (2,852 vessels with a known build year). At 22,866 gross tonnage it is larger than 86% of the other 2,665 general cargo ships with a recorded tonnage. It is one of 181 general cargo ships here under the Marshall Islands flag, 5.9% of the 3,081 on the register. Its MRV returns name it CORELEADER OL for 2018 and MANTA MERVE for 2025. The reported port of registry changed: PANAMA (2018), then MAJURO (2025).
Its 779 t of CO₂ for 2025 is 72% below the median of 2,820 t among the 2,469 general cargo ships on this register that reported for 2025. Per nautical mile it emitted 264.1 kg CO₂, 2.2 times the type median of 122.2 kg. It logged 287 hours at sea against a median of 3,044 hours for its type that year. 3.6% of its 2025 emissions were at berth; the median for general cargo ships was 4.3%. Of the 5 comparable vessels listed below with a 2025 return, 5 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 | 779 | 246 | — | 287 | 28 | 264.1 | — | — |
| 2018 | 5,166 | 1,648 | 18,392 | 1,605 | 78 | 280.9 | 11.5 | 81 |
Vessel particulars
- IMO number
- 9597678
- Previously reported as
- MANTA MERVE
- Ship type
- General cargo ship
- Gross tonnage
- 22,866
- Length overall
- 177.0 m
- Beam
- 28.0 m
- Year built
- 2012
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- MAJURO MRV 2025
- Home port
- MAJURO
- Technical efficiency (design)
- EEXI (6.3 gCO₂/t·nm)
- Verifier
- Nippon Kaiji Kyokai, Japan
- Accreditation
- VS-21325-01
- Compliance document issued
- 2026-03-17
- Compliance document expires
- 2027-06-30
Efficiency against its own type2018
Position 2,552 of 3,151 qualifying bulk carriers by EEOI, at the 81st percentile. The dashed line is the type median, 8.2; this vessel reported 11.5.
EEOI divides emissions by transport work, which for this vessel and year was 448,056,375 tonne-miles over 18,392 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 84.9% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2020, 2021, 2022, 2023, 2024, so the series has gaps.
From 2018 to 2025, emissions fell 84.9% and CO₂ per nautical mile fell 6.0%.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
- 791 t
- Methane (CH₄)
- 0.01 t
- Nitrous oxide (N₂O)
- 0.04 t
- Under EU ETS
- 430 t, 55% 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 2 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.