Navalyze · Bulk carrier · Ship
ZBB SERENITY
- IMO
- 9486570
- Type
- Bulk carrier
- Average cargo carried
- 32,327 t
- Port of registry
- Valletta
- Technical efficiency
- EEXI 5.08 g CO₂/t·nm
- Ice class
- IC
- Former names
- SREDNA GORA, CLIPPER COMO
ISM company (DoC holder) in 2025: ZBB DENIZCILIK AS
2025 at a glance
From the 2025 THETIS-MRV report. Carries about 32,327 t of cargo on average.
Within the bulk carrier fleet, 2025
Set against all 3,610 bulk carrier 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 ports0%
- From the EU84%
- Into the EU14%
- At berth in the EU2%
51% of this ship's CO₂ falls under the EU ETS (1,121 t).
Over the years
Full-year reports only. The Bulk carrier median is the middle ship of all bulk carrier ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.
Fuel per mile, kg/nm
- ZBB SERENITY
- Bulk carrier median
Average speed, kn
- ZBB SERENITY
- Bulk carrier median
CO₂ per transport work (cargo), g CO₂/t·nm
- ZBB SERENITY
- Bulk carrier median
Year on year
| Year | Speed | Fuel per mile | Fuel per day | Distance | CO₂ per TW | Reading |
|---|---|---|---|---|---|---|
| 2024→2025 | – | – | – | – | – | |
| 2023→2024 | – | – | – | – | – | |
| 2022→2023 | +0.8 kn | −1% | +6% | −85% | +34% | 0.8 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade). |
| 2021→2022 | +0.2 kn | +5% | +7% | +81% | −36% | Same speed, fuel per mile up 5%; in line with the speed change. |
| 2020→2021 | +2.6 kn | −10% | +17% | −39% | +85% | 2.6 kn faster, fuel per mile down 10%; better than speed alone explains (hull, engine or trade). |
| 2019→2020 | −0.7 kn | −2% | −9% | −15% | +732% | 0.7 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade). |
| 2018→2019 | +0.1 kn | +1% | +3% | +337% | −84% | Same speed, fuel per mile flat. |
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 | ZBB DENIZCILIK AS | 699 | 2,199 | 9,718 | 2,351 | 4.1 | 71.9 | 7.00 | – |
| 2024 | ZBB DENIZCILIK AS | 0 | 0 | – | 0 | – | – | – | – |
| 2023 | not published | 360 | 1,129 | 4,556 | 364 | 12.5 | 78.9 | 13.89 | 58% |
| 2022 | not published | 2,494 | 7,806 | 31,394 | 2,685 | 11.7 | 79.4 | 10.39 | – |
| 2021 | not published | 1,314 | 4,212 | 17,302 | 1,507 | 11.5 | 75.9 | 16.31 | – |
| 2020 | not published | 2,401 | 7,657 | 28,566 | 3,210 | 8.9 | 84.0 | 8.82 | – |
| 2019 | not published | 2,872 | 9,013 | 33,668 | 3,505 | 9.6 | 85.3 | 1.06 | – |
| 2018 | not published | 649 | 2,034 | 7,703 | 812 | 9.5 | 84.3 | 6.75 | – |
Benchmark and verification
| Year | ISM company | CO₂ per TW, g CO₂/t·nm | Bulk carrier median | vs Bulk carrier | Rank | Verifier | Methods |
|---|---|---|---|---|---|---|---|
| 2025 | ZBB DENIZCILIK AS | 7.00 | 7.89 | −11% | 1,361 of 3,610 | Polish Register of Shipping | B |
| 2024 | ZBB DENIZCILIK AS | – | – | – | – | Polish Register of Shipping | B |
| 2023 | not published | 13.89 | 8.27 | +68% | 3,009 of 3,548 | Polish Register of Shipping | B |
| 2022 | not published | 10.39 | 8.71 | +19% | 2,603 of 3,968 | Lloyd's Register | B |
| 2021 | not published | 16.31 | 8.57 | +90% | 3,164 of 3,466 | Lloyd's Register | B |
| 2020 | not published | 8.82 | 8.24 | +7% | 1,799 of 3,150 | RINA | B |
| 2019 | not published | 1.06 | 8.38 | −87% | 10 of 3,360 | RINA | B |
| 2018 | not published | 6.75 | 8.50 | −21% | 937 of 3,384 | RINA | B |
Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Bulk carrier 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 bulk carrier 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.