Abstract: A propeller shield to selectively shield rotating blades of a propeller. The propeller shield may include a shield element for placement adjacent to the propeller blades. The shield element may include multiple gates configured to open in response to water flow generated by the propeller. The gates may be configured to open away from the propeller in response to a forward movement of the boat, and to close towards the propeller in response to cessation of the forward movement.

Abstract: A propeller shield to selectively shield rotating blades of a propeller. The propeller shield may include a shield element for placement adjacent to the propeller blades. The shield element may include multiple gates configured to open in response to water flow generated by the propeller. The gates may be configured to open away from the propeller in response to a forward movement of the boat, and to close towards the propeller in response to cessation of the forward movement.

Abstract: A propeller guard including a multi-angled band formed of a plurality of independently radiused sections. The band may also include a plurality of evenly spaced ports therethrough. The multi-angled band is designed to improve the performance characteristics, specifically acceleration, planing, speed and steering, of the motor. The band is attached to the motor by an attachment bracket which is designed to inhibit fatigue and cyclical loading failure caused by vibrations of the band during use. The band may also include convex tapered inlet and outlet openings.

Abstract: A propeller guard including a cylindrically shaped ring which includes a plurality of evenly spaced openings therethrough. The openings in the ring are formed so as to allow water to pass therethrough during operation so as to improve the performance characteristics, specifically acceleration, plaining, speed and steering, of the motor. The ring is attached to the motor by an attachment bracket which is designed to inhibit fatigue and cyclical loading failure caused by vibrations of the ring during use. The ring is formed in a generally tapered recangular cross section in order to minimize the drag and vibration characteristics thereof during use. The ring is formed so as to be attachable to an outboard motor to surround the propeller thereof to protect the propeller from underwater objects.