For constant speeds, a Cat® Transverse Thruster (controllable pitch) gives you maximum reliability and minimum downtime.

The Cat Transverse Thruster (controllable pitch) is a propeller normally used for constant shaft speed. You’re in complete control with the highly reliable electronic control system and interface to joystick and DP systems. With heavy-duty gears and bearings, customized blades, and suitable for electric motor or diesel engine drive, it reliably meets your individual requirements. What’s more, maintenance is quick and painless—the complete thruster can be mounted and dismounted in the tunnel.