Hydro Drive: Model UD2

The Hydro Drive is a robust 100 horsepower commercial duty azimuth drive designed for use in small highly maneuverable workboats. These tough azimuths have short legs, heavy duty fixed pitch propellers, over sized steering gears, rugged cast housings and protective shear pins. Like the HD3, the Hydro Drive is a robust marine azimuth drive designed to withstand the worst marine working conditions.

The Hydro Drive is best known for being the propulsion and steering systems on the log broncs. Over the years these impressive azimuths have been installed on small passenger ferries, oil skimmers, small workboats, fish boats and in hybrid diesel electric applications.

Olympic HD3 AzimuthPOWER RATING
Power Input
100 HP (75 kW) continuous rating

Standard Propeller Size
24" (610 mm) Max: 4 blade
To fit 1-1/2" (38.1 mm)
tapered propeller shaft

Input Rpm
Max continuous RPM rating: 2600 RPM
Recommended 2200 RPM

Drive Train
Full circle oil bath, lower unit functions as a Heat Exchanger

Reduction Ratio

Mechanical Link System
Power hydraulic steering built into drive, continuous rotation in either direction, controlled by top stub shaft: full 360 degree rotation obtained in 3 seconds: direct drive gear to steering valve for follow up control:

Extra large steering gear to extend service life in tough workboat service

For UD2 Parts Manual please click here.
For UD2 Mounting Dimensions please click here.