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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.
- Dioryx Maritime Services Corporationyour view
Side by side
All 2025 reports of each operator, across every ship type. Change is against 2024 where the operator reported then.
| Dioryx Maritime Services Corporation | |
|---|---|
| Ships | 5 |
| CO₂ emitted | 95,404 t−3.7% |
| Fuel kg/nm | 166 |
| Average speed | 13.0 kn |
| CO₂ at berth | 3.5% |
| Ships burning LNG | 0 |
| Ships using alternative fuel | 0 |
| Main segment | Container |
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.
Container
CO₂ per transport work (cargo) in g CO₂/t·nm · segment median 16.3
- Dioryx Maritime Services Corporation21.4 (+31% vs median)
- ← bettersegment medianworse →
| Shipsin container | CO₂ per transport work (cargo)g/t·nm, median ship | vs container medianlower is better | Fuel kg/nmfleet avg. | Average speedknots at sea | Hours at seaper ship per year | CO₂ at berthshare | LNG / alt. fuelships | |
|---|---|---|---|---|---|---|---|---|
| Dioryx Maritime Services Corporation | 5 | 21.4 | +31% | 166 | 13.0 | 2,830 | 3.5% | – |
| Segment median | 16.3 | 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 | |
|---|---|---|---|---|---|
| Dioryx Maritime Services Corporation | Bureau Veritas (5) | 100% | 0% | 0% | 0% |
Dioryx Maritime Services Corporation: 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 |
|---|---|---|---|---|---|---|---|---|---|
| IONIKOS | 9397614 | Container | 23.2 g CO₂/t·nm | 16.3 | +42% | 13.6 | 14,230 t | €386k | €17k |
| KASSIAKOS | 9386471 | Container | 21.6 g CO₂/t·nm | 16.3 | +33% | 12.7 | 14,113 t | €664k | €0 |
| AITOLIKOS | 9386483 | Container | 21.4 g CO₂/t·nm | 16.3 | +31% | 11.8 | 18,953 t | €664k | €0 |
| CMA CGM TOPAZ | 9397602 | Container | 19.3 g CO₂/t·nm | 16.3 | +18% | 12.2 | 20,837 t | €718k | €0 |
| CMA CGM LAPIS | 9386495 | Container | 19.1 g CO₂/t·nm | 16.3 | +17% | 14.6 | 27,272 t | €757k | €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.