Bulk carrier · Bahamas flag · built 2019
MARS HARMONY: CO₂ emissions 2019–2025
IMO 9832432 EU ETS6 reporting years
- CO₂ reported 2024
- 3,057 t
- Fuel burned
- 981 t
- Distance
- 15,623 nm
- Time at sea
- 1,507 h
- Emitted at berth
- 1% of total
- Share of year under way
- 17%
- Gross tonnage
- 22,500
MARS HARMONY against its type
Built in 2019, it is 7 years newer than the median bulk carrier on this register, which was built in 2012 (6,882 vessels with a known build year). At 22,500 gross tonnage it is smaller than 85% of the other 6,571 bulk carriers with a recorded tonnage. It is one of 218 bulk carriers here under the Bahamas flag, 2.7% of the 8,138 on the register. The same builder is recorded for 468 other vessels here, 362 of them bulk carriers. Its MRV returns name it MARS HARMONY for 2019–2021 and UNITY MOON for 2022–2025. The reported port of registry changed: MONROVIA (2019–2022), then Nassau (2023–2025).
Its 3,057 t of CO₂ for 2024 is close to the median of 3,377 t among the 3,676 bulk carriers on this register that reported for 2024. Per nautical mile it emitted 195.7 kg CO₂, 26% below the type median of 264.0 kg. It logged 1,507 hours at sea against a median of 1,238 hours for its type that year. 1.0% of its 2024 emissions were at berth; the median for bulk carriers was 2.9%. Across 5 years with reported emissions, the highest was 2024 (3,057 t) and the lowest 2019 (1,347 t). Its efficiency percentile within the type went from 39 in 2019 to 23 in 2024 (lower is more efficient). Of the 3 sister ships listed below with a 2024 return, 0 reported a lower CO₂ per nautical mile than this vessel.
No EU/EEA voyages were reported for 2025: zero CO₂ and zero time at sea, left out of the trend and of any ranking.
Emissions by year2019–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | No EU/EEA voyages reported | |||||||
| 2024 | 3,057 | 981 | 15,623 | 1,507 | 31 | 195.7 | 5.9 | 23 |
| 2023 | 2,141 | 679 | 11,526 | 1,137 | 102 | 185.8 | 12.9 | 87 |
| 2022 | 1,991 | 628 | 10,919 | 880 | 122 | 182.4 | 9.5 | 63 |
| 2021 | 2,082 | 664 | 9,322 | 850 | 80 | 223.3 | 7.6 | 38 |
| 2019 | 1,347 | 432 | 7,058 | 616 | 9 | 190.9 | 7.3 | 39 |
Vessel particulars
- IMO number
- 9832432
- Previously reported as
- UNITY MOON
- Ship type
- Bulk carrier
- Gross tonnage
- 22,500
- Length overall
- 180.0 m
- Year built
- 2019
- Flag state
- Bahamas per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Liberia. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Oshima Shipbuilding
- Port of registry
- Nassau MRV 2024
- Technical efficiency (design)
- EEXI (4.64 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2025-02-26
- Compliance document expires
- 2026-06-30
Efficiency against its own type2024
Position 653 of 2,858 qualifying bulk carriers by EEOI, at the 23rd percentile. The dashed line is the type median, 7.9; this vessel reported 5.9.
EEOI divides emissions by transport work, which for this vessel and year was 515,462,057 tonne-miles over 15,623 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2024 was 126.9% higher than in 2019, for EU/EEA voyages only. No return is recorded for 2020, so the series has gaps.
From 2023 to 2024, emissions rose 42.8% while distance sailed rose 35.6%and CO₂ per nautical mile rose 5.3%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2024 emissions occurred
Methane, nitrous oxide and EU ETS2024
- Total CO₂ equivalent
- 3,105 t
- Methane (CH₄)
- 0.05 t
- Nitrous oxide (N₂O)
- 0.18 t
- Under EU ETS
- 1,544 t, 51% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2019 | Nippon Kaiji Kyokai | Japan |
| 2022 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2023 | 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) and Wikimedia Commons.
This page draws on 6 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.