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Compare operators, 2025
Pick a company or group, then the competitors to hold it against, or compare verifiers. Every figure comes from the public THETIS-MRV reports for EU and EEA voyages.
- Sera Denizcilik A.S.your view
Side by side
All 2025 reports of each operator, across every ship type. Change is against 2024 where the operator reported then.
| Sera Denizcilik A.S. | |
|---|---|
| Ships | 8 |
| CO₂ emitted | 53 kt+171.0% |
| Fuel per mile | 69 kg/nm |
| Average speed | 8.7 kn |
| CO₂ at berth | 5.0% |
| Ships burning LNG | 0 |
| Main segment | Bulk carrier |
Fuel per mile and speed depend on ship size and type; compare them within a segment below.
Segment by segment
Efficiency only compares within a ship type. Each row gives the CO₂ per transport work of an operator's typical (median) ship, and the bar sets it against the typical ship of the whole segment: to the left of the line it emits less CO₂ for the same transport work, to the right more.
Bulk carrier
CO₂ per transport work (cargo) in g CO₂/t·nm · segment median 7.9
- Sera Denizcilik A.S.11.0 (+39% vs median)
- ← bettersegment medianworse →
| Ships | Per work | vs median | Fuel kg/nm | Speed kn | Hours at sea | At berth | LNG | |
|---|---|---|---|---|---|---|---|---|
| Sera Denizcilik A.S. | 5 | 11.0 | +39% | 72 | 8.8 | 4,323 | 4.8% | – |
| Segment median | 7.9 | 0% |
General cargo
CO₂ per transport work (dwt) in g CO₂/dwt·nm · segment median 25.5
- Sera Denizcilik A.S.9.8 (−61% vs median)
- ← bettersegment medianworse →
| Ships | Per work | vs median | Fuel kg/nm | Speed kn | Hours at sea | At berth | LNG | |
|---|---|---|---|---|---|---|---|---|
| Sera Denizcilik A.S. | 3 | 9.8 | −61% | 62 | 8.3 | 2,750 | 5.5% | – |
| Segment median | 25.5 | 0% |
Verification and monitoring
Who verifies each operator's reports, and which MRV methods its ships use to measure fuel (share of reports).
| Verifiers (ships) | A · delivery notes | B · tank monitoring | C · flow meters | D · direct | |
|---|---|---|---|---|---|
| Sera Denizcilik A.S. | Polish Register of Shipping (8) | 0% | 100% | 0% | 0% |
Sera Denizcilik A.S.: ships furthest from their peers
Each ship's CO₂ per transport work against the median ship of its type and size band. +100% means the ship emits twice as much CO₂ for the same transport work as a typical ship of its size. Ro-pax ships show passenger figures, with freight underneath.
| Ship | IMO | Segment | CO₂ per transport work | Size-band median | vs median | Speed kn | CO₂ | Allowances |
|---|---|---|---|---|---|---|---|---|
| DORA | 9387360 | Bulk carrier | 11.2 g CO₂/t·nm | 9.5 | +18% | 7.9 | 10,002 t | €311k |
| OLIVIA | 9180396 | Bulk carrier | 10.7 g CO₂/t·nm | 9.5 | +13% | 10.8 | 6,427 t | €0 |
| LUVIA | 9316220 | Bulk carrier | 8.5 g CO₂/t·nm | 9.5 | −11% | 8.8 | 9,622 t | €384k |
| LUCA | 9166211 | Bulk carrier | 11.9 g CO₂/t·nm | 15.5 | −23% | 8.6 | 7,805 t | €214k |
| PARLA | 9537977 | General cargo | 10.1 g CO₂/dwt·nm | 25.5 | −60% | 7.4 | 5,943 t | €181k |
| LOUISE | 9470301 | General cargo | 9.8 g CO₂/dwt·nm | 25.5 | −61% | 8.8 | 3,252 t | €38k |
| ARIA | 9473597 | General cargo | 7.7 g CO₂/dwt·nm | 25.5 | −70% | 9.4 | 4,076 t | €82k |
30 of 8 reports shown. A high ratio can mean an older or faster-sailing ship, short trades with much time manoeuvring, or part-loaded voyages; it marks where to look first.
Notes
- Companies are ISM companies (Document of Compliance holders) as named in THETIS, usually the ship manager.
- Groups combine ISM companies matched on name and known ownership. If a company is in the wrong group, tell us at info@navalyze.com.
- Efficiency figures use full-year reports with fuel; totals include part-year reports.
- Euro figures use the EUA price set at the top of the page.
- Verifier names vary by entity and year (for example DNV AS and DNV Hellas); they are rolled up into one brand. A verifier's figures cover the ships whose 2025 report it verified.