Navalyze · Market view · Compare
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.
- Grona Shipmanagement GmbHyour view
Side by side
All 2025 reports of each operator, across every ship type. Change is against 2024 where the operator reported then.
| Grona Shipmanagement GmbH | |
|---|---|
| Ships | 5 |
| CO₂ emitted | 35,537 t+5.1% |
| Fuel kg/nm | 54.2 |
| Average speed | 11.1 kn |
| CO₂ at berth | 6.4% |
| Ships burning LNG | 0 |
| Ships using alternative fuel | 0 |
| Main segment | General cargo |
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.
General cargo
CO₂ per transport work (dwt) in g CO₂/dwt·nm · segment median 25.5
- Grona Shipmanagement GmbH23.8 (−7% vs median)
- ← bettersegment medianworse →
| Shipsin general cargo | CO₂ per transport work (dwt)g/dwt·nm, median ship | vs general cargo medianlower is better | Fuel kg/nmfleet avg. | Average speedknots at sea | Hours at seaper ship per year | CO₂ at berthshare | LNG / alt. fuelships | |
|---|---|---|---|---|---|---|---|---|
| Grona Shipmanagement GmbH | 3 | 23.8 | −7% | 45.4 | 11.2 | 4,312 | 2.9% | – |
| Segment median | 25.5 | 0% |
Bulk carrier
CO₂ per transport work (cargo) in g CO₂/t·nm · segment median 7.90
- Grona Shipmanagement GmbH12.0 (+52% vs median)
- ← bettersegment medianworse →
| Shipsin bulk carrier | CO₂ per transport work (cargo)g/t·nm, median ship | vs bulk carrier medianlower is better | Fuel kg/nmfleet avg. | Average speedknots at sea | Hours at seaper ship per year | CO₂ at berthshare | LNG / alt. fuelships | |
|---|---|---|---|---|---|---|---|---|
| Grona Shipmanagement GmbH | 2 | 12.0 | +52% | 74.8 | 10.9 | 2,843 | 11.4% | – |
| Segment median | 7.90 | 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 | |
|---|---|---|---|---|---|
| Grona Shipmanagement GmbH | DNV (5) | 40% | 60% | 100% | 0% |
Grona Shipmanagement GmbH: ships furthest from their peers
Each ship's CO₂ per transport work against the median ship of its segment, as on the ship's own page. +100% means the ship emits twice as much CO₂ for the same transport work as the median ship. The cost of the gap compares each ship with ships of its size, as everywhere on the site. Ro-pax ships show passenger figures, with freight underneath.
| Ship | IMO | Segment | CO₂ per transport work | Segment median | vs median | Average speed | CO₂ | Allowances | Cost of gap |
|---|---|---|---|---|---|---|---|---|---|
| IMAVERE | 9612325 | Bulk carrier | 13.6 g CO₂/t·nm | 7.90 | +72% | 11.5 | 9,707 t | €384k | €0 |
| ALYTUS | 9544750 | Bulk carrier | 10.4 g CO₂/t·nm | 7.90 | +31% | 9.8 | 4,961 t | €158k | €13k |
| PUKA | 9374973 | General cargo | 27.6 g CO₂/dwt·nm | 25.5 | +8% | 10.3 | 8,747 t | €209k | €16k |
| HELME | 9504140 | General cargo | 23.8 g CO₂/dwt·nm | 25.5 | −7% | 12.0 | 6,623 t | €331k | €0 |
| LAUNKALNE | 9504114 | General cargo | 20.5 g CO₂/dwt·nm | 25.5 | −20% | 11.4 | 5,499 t | €289k | €0 |
30 of 5 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 trading under the same name, and differently named companies only where a public source shows common ownership (linked in the member list). 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.