Abstract: A power steering system for an outboard motor for steering an outboard motor disposed outside of a rear portion of a hull and usually including a manual steering system mounted upon the hull for operating a steering element so as to manually steer the outboard motor body, is disclosed. A power unit is operatively connected to the manual steering system and includes an electric motor for applying a steering assist force to the manual steering system. The power unit is located at the portion of the hull capable of effectively utilizing the inner space of the hull and the electric motor of the power unit is controlled by means of a control unit in accordance with the navigation conditions of the hull and the operating conditions of the outboard motor as detected by means of suitable sensors. The sensors comprise various sensors such as, for example, a steering torque sensor and an engine speed sensor.

Abstract: A power steering system of an outboard motor to be mounted upon the body of a hull and including a steering bracket secured to the body of the hull, a swivel bracket rotatable about a body of the outboard motor and a pair of clamping brackets supporting the swivel bracket, comprises a manual steering unit for manually steering a steering element so as to operate the outboard motor, the manual steering unit including a link mechanism connected to the steering element and connected to the steering bracket, and a power unit operatively connected to the link mechanism of the manual steering unit. The power unit includes an electric motor for applying a steering assist force to the manual steering unit for reducing the steering load during steering operations through means of the link mechanism and also includes a mechanism for converting rotation of the electric motor into linear motion.