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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.

Side by side

All 2025 reports of each operator, across every ship type. Change is against 2024 where the operator reported then.

BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.
Ships12
CO₂ emitted539 kt−4.9%
Fuel per mile169 kg/nm
Average speed18.9 kn
CO₂ at berth4.3%
Ships burning LNG0
Main segmentRo-pax

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.

Ro-pax

CO₂ per transport work (pax) in g CO₂/pax·nm · segment median 567

  • BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.88.6 (−84%)
  • ← betterworse →

CO₂ per transport work (freight) in g CO₂/t·nm · segment median 253

  • BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.558 (+120%)
  • ← betterworse →
ShipsPer work (pax)vs medianFuel kg/nmSpeed knHours at seaAt berthLNG
BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.1088.6
558 freight
−84%
+120% freight
18219.94,3944.2%–
Segment median 567
253 freight
0%

Ro-ro

CO₂ per transport work (cargo) in g CO₂/t·nm · segment median 95.2

  • BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.185 (+94%)
  • ← betterworse →
ShipsPer workvs medianFuel kg/nmSpeed knHours at seaAt berthLNG
BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.2185+94%9314.74,9275.9%–
Segment median 95.20%

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 notesB · tank monitoringC · flow metersD · direct
BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.Verifavia (12)0%100%0%0%

BLUE STAR FERRIES SINGLE MEMBER MARITIME S.A.: 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.

ShipIMOSegmentCO₂ per transport workSize-band medianvs medianSpeed knCO₂Allowances
BLUE CARRIER 19186649Ro-ro221 g CO₂/t·nm161+37%15.319,723 t€1.0m
BLUE CARRIER 29125384Ro-ro149 g CO₂/t·nm161−7%14.322,721 t€1.2m
BLUE STAR PATMOS9565041Ro-pax186 g CO₂/pax·nm
1,241 g CO₂/t·nm freight
567
253
−67%
+390%
20.688,731 t€0
BLUE STAR DELOS9565039Ro-pax135 g CO₂/pax·nm
1,114 g CO₂/t·nm freight
567
253
−76%
+340%
22.576,713 t€24k
BLUE STAR PAROS9241774Ro-pax120 g CO₂/pax·nm
1,032 g CO₂/t·nm freight
567
253
−79%
+308%
19.528,578 t€8k
BLUE STAR NAXOS9241786Ro-pax116 g CO₂/pax·nm
1,026 g CO₂/t·nm freight
567
253
−79%
+305%
19.537,489 t€16k
BLUE STAR 19197105Ro-pax114 g CO₂/pax·nm
658 g CO₂/t·nm freight
567
253
−80%
+160%
20.164,662 t€29k
DIAGORAS8916126Ro-pax63.4 g CO₂/pax·nm
458 g CO₂/t·nm freight
567
253
−89%
+81%
17.621,095 t€31k
BLUE STAR 29207584Ro-pax57.1 g CO₂/pax·nm
430 g CO₂/t·nm freight
567
253
−90%
+70%
21.669,899 t€19k
KISSAMOS9035876Ro-pax32.8 g CO₂/pax·nm
270 g CO₂/t·nm freight
567
253
−94%
+7%
18.530,669 t€1.5m
LEFKA ORI8616336Ro-pax31.4 g CO₂/pax·nm
216 g CO₂/t·nm freight
567
253
−94%
−15%
18.845,573 t€1.9m
ASTERION II8922163Ro-pax30.2 g CO₂/pax·nm
232 g CO₂/t·nm freight
567
253
−95%
−8%
19.033,221 t€1.7m

30 of 12 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.