46 documented fitments · 25 hp · 3600 rpm
Propeller for the Beta Marine 25.
We've documented 46 propeller installations behind this engine — the ratios, drives and sizes below are what the fleet actually runs.
Rated power
25 hp
Max RPM
3600
Common ratios
2:1 · 2.6:1 · 2.5:1 · 2.45:1
Drive split
45 shaft · 1 saildrive
Documented propeller families
The fleet
Boats we've propped with the 25
- Sigma 33×13
- Westerly Fulmar×3
- Beneteau First 305×2
- Westerly Centaur×2
- Beneteau 305×1
- Beneteau 351×1
- Beneteau First 285×1
- Beneteau First 32×1
- Catalina 34 MK1×1
- Jeanneau Selection 36×1
- Pearson 10M×1
- Rival 32×1
- Sadler 34×1
- Van de Stadt 34×1
25 propeller questions
What size propeller suits a Beta Marine 25?
It depends on the gearbox ratio behind it (documented installations most often run 2:1, 2.6:1, 2.5:1) and the boat it pushes. Power and max RPM set the optimum diameter; the ratio converts engine speed to shaft speed. The Builder runs the numbers and an engineer verifies.
Which propeller family do Beta Marine 25 owners fit?
Documented Beta Marine 25 installations run Varifold 2-blade, Autoprop H5, Autoprop H20 — the split follows boat type and usage rather than the engine itself.
Does the Beta Marine 25 come in shaft and saildrive versions?
Both are documented: 45 shaft and 1 saildrive installations. The propeller differs (hub vs spline fitting) so tell us which yours is.
Running a Beta Marine 25?
Two minutes in the Builder — engine pre-filled, gearbox ratio checked against the fleet, verified by an engineer within one business day.