The Keypower Get-Home Drive, also known as an Auxiliary Prop Drive, is a hydraulically driven, clutched gear box that is mounted in a vessels main drive line and provides power to turn the vessels propeller by means of auxiliary  engine horsepower when the main propulsion system is shut down or disabled.  It also allows for driving the vessel at low speeds, where it is undesirable to operate a large main engine, at or near idle speed for extended periods of time.
 
Keypower Get Home Drives come in two sizes; the KP4500 and KP6000.  Both come equipped with high quality AGMA8 gear sets. The drives run off the auxiliary engine so that the vessel burns less fuel, while providing propulsion in the event of a main drive line failure.