MOSEL ACE
- IMO
- 9177052
- Type
- Ro-ro ship
- Average cargo carried
- 2,290 t
- Port of registry
- Monrovia
- Technical efficiency
- EEXI 12.70 g CO₂/t·nm
ISM company (DoC holder) in 2025: SIEM Ship Management · part of Siem
2025 at a glance
From the 2025 THETIS-MRV report. Carries about 2,290 t of cargo on average.
Within the ro-ro fleet, 2025
Set against all 235 ro-ro ships with a full-year 2025 report. Bigger ships burn more per mile but less per tonne of cargo, so read fuel per mile with the ship's size in mind.
Where the emissions happen, 2025
THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.
- Between EU ports51%
- From the EU21%
- Into the EU19%
- At berth in the EU9%
63% of this ship's CO₂ falls under the EU ETS (10,290 t).
Over the years
Full-year reports only. The Ro-ro median is the middle ship of all ro-ro ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.
Fuel per mile, kg/nm
- MOSEL ACE
- Ro-ro median
Average speed, kn
- MOSEL ACE
- Ro-ro median
CO₂ per transport work (cargo), g CO₂/t·nm
- MOSEL ACE
- Ro-ro median
Year on year
| Year | Speed | Fuel per mile | Fuel per day | Distance | CO₂ per TW | Reading |
|---|---|---|---|---|---|---|
| 2024→2025 | −0.3 kn | +1% | −1% | −3% | +27% | 0.3 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade). |
| 2023→2024 | −0.2 kn | −4% | −5% | −10% | −8% | Same speed, fuel per mile down 4%; in line with the speed change. |
| 2022→2023 | −0.2 kn | +1% | −1% | +6% | +2% | Same speed, fuel per mile flat. |
| 2021→2022 | −0.4 kn | +4% | +2% | −9% | −15% | 0.4 kn slower, fuel per mile up 4%; worse than speed alone explains (fouling, weather, loading or trade). |
| 2020→2021 | +3.1 kn | −4% | +26% | +30% | +0% | 3.1 kn faster, fuel per mile down 4%; better than speed alone explains (hull, engine or trade). |
Fuel per mile rises roughly with the square of speed for a given ship, so a change in speed explains much of a change in fuel per mile.
Every reporting year
One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.
Operation
| Year | ISM company | Fuel t | CO₂ t | Distance nm | At sea h | Speed kn | Fuel kg/nm | CO₂ g/t·nm | Laden fuel |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | SIEM Ship Management | 5,322 | 16,463 | 58,389 | 4,855 | 12.0 | 91.2 | 123.10 | – |
| 2024 | SIEM Ship Management | 5,447 | 17,127 | 60,395 | 4,924 | 12.3 | 90.2 | 97.24 | – |
| 2023 | not published | 6,298 | 19,790 | 67,341 | 5,397 | 12.5 | 93.5 | 106.12 | – |
| 2022 | not published | 5,895 | 18,530 | 63,384 | 4,976 | 12.7 | 93.0 | 104.08 | – |
| 2021 | not published | 6,230 | 19,578 | 70,035 | 5,361 | 13.1 | 89.0 | 123.04 | – |
| 2020 | not published | 4,977 | 15,731 | 53,808 | 5,404 | 10.0 | 92.5 | 122.68 | – |
Benchmark and verification
| Year | ISM company | CO₂ per TW, g CO₂/t·nm | Ro-ro median | vs Ro-ro | Rank | Verifier | Methods |
|---|---|---|---|---|---|---|---|
| 2025 | SIEM Ship Management | 123.10 | 95.19 | +29% | 138 of 235 | DNV | A |
| 2024 | SIEM Ship Management | 97.24 | 97.53 | −0% | 110 of 220 | DNV | C |
| 2023 | not published | 106.12 | 56.64 | +87% | 375 of 417 | DNV | C |
| 2022 | not published | 104.08 | 57.66 | +81% | 402 of 463 | DNV | C |
| 2021 | not published | 123.04 | 59.57 | +107% | 415 of 459 | DNV | C |
| 2020 | not published | 122.68 | 57.26 | +114% | 403 of 449 | DNV | C |
Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Ro-ro ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's ro-ro ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.