Online SDS calculator

Surface Drive System are adapted for planing hull boat type. Feel free to fill in your boat technical information, our simulator will calculate the torque and estimate the appropriate model for your application.

This program does not make any speed prediction. To get a performance calculation contact us.

Note that this calculator is only a simulation, please fill in the QUOTATION INQUIRY for a complete study including expected performances and SDS model selection.

If your vessel requires more than a pair of drives, please contact us, we will be pleased to offer a customized package.

Enter your boat specifications :



Model :

Diameter :

Application :

* required fields

See technical information for your Surface Drive System model

A suitable Surface Drive System model for your application

Engine torque calculation

All engine manufacturers supply the engine power curve, look at the
maximum power and maximum revolution.
Example : 420 horsepower @ 3300 rpm.
The torque is : T (kg.m) = 716,2 x Power (hp) / Revolutions ( Revs/min)
In that case the engine torque is : T = 716,2 x 420 / 3300 = 91,15 kg.m

Drive input torque

The torque to be used for drive selection is the input torque, so the engine
torque has to be multiplied by the gear ratio.

Check the table for the suitable model

Maximum torque chart Kg/m