The invention provides a suspended catamaran target boat, including a deck, a suspension structure and two buoyancy units, the suspension structure is connected to upper sides of the two buoyancy units, and the deck is mounted on the suspension structure; the suspension structure includes at least two suspension assemblies including an upper base, a lower base and two support rods. The support rods are hinged between the upper base and the lower base, and the upper base, the lower base and the two support rods form a four-bar linkage mechanism, where a shock absorber and a restricting mechanism are installed between the upper base and the lower base. The deck is provided with a main controller, an acceleration sensor and a heel sensor, and the main controller is respectively electrically connected with the acceleration sensor, the heel sensor and each of the restricting mechanisms of the two suspension assemblies.

The invention provides a suspended catamaran target boat, including a deck, a suspension structure and two buoyancy units, the suspension structure is connected to upper sides of the two buoyancy units, and the deck is mounted on the suspension structure; the suspension structure includes at least two suspension assemblies including an upper base, a lower base and two support rods. The support rods are hinged between the upper base and the lower base, and the upper base, the lower base and the two support rods form a four-bar linkage mechanism, where a shock absorber and a restricting mechanism are installed between the upper base and the lower base. The deck is provided with a main controller, an acceleration sensor and a heel sensor, and the main controller is respectively electrically connected with the acceleration sensor, the heel sensor and each of the restricting mechanisms of the two suspension assemblies.

Shooting training systems have a self-propelled robotic target support platform operable to navigate on an extended surface, the platform supporting a target, the platform including a sensor array adapted to detect and register shot information about a shot generated by a shooter passing proximate the target, a transmitter on the platform adapted to transmit the shot information, and a receiver associated with the shooter adapted to receive the shot information and to provide shot information to the shooter. The platform may be a vehicle adapted to operate over a ground surface in any direction. The platform may be a watercraft. The platform may be a wheeled vehicle. The sensor array may be adapted to detect and register shot information including a location and direction of the shot. There may be a plurality of robotic target support platforms, each having a sensor array. The receiver may be adjacent to the shooter.

Shooting training systems have a self-propelled robotic target support platform operable to navigate on an extended surface, the platform supporting a target, the platform including a sensor array adapted to detect and register shot information about a shot generated by a shooter passing proximate the target, a transmitter on the platform adapted to transmit the shot information, and a receiver associated with the shooter adapted to receive the shot information and to provide shot information to the shooter. The platform may be a vehicle adapted to operate over a ground surface in any direction. The platform may be a watercraft. The platform may be a wheeled vehicle. The sensor array may be adapted to detect and register shot information including a location and direction of the shot. There may be a plurality of robotic target support platforms, each having a sensor array. The receiver may be adjacent to the shooter.

Shooting training systems have a self-propelled robotic target support platform operable to navigate on an extended surface, the platform supporting a target, the platform including a sensor array adapted to detect and register shot information about a shot generated by a shooter passing proximate the target, a transmitter on the platform adapted to transmit the shot information, and a receiver associated with the shooter adapted to receive the shot information and to provide shot information to the shooter. The platform may be a vehicle adapted to operate over a ground surface in any direction. The platform may be a watercraft. The platform may be a wheeled vehicle. The sensor array may be adapted to detect and register shot information including a location and direction of the shot. There may be a plurality of robotic target support platforms, each having a sensor array. The receiver may be adjacent to the shooter.

Shooting training systems have a self-propelled robotic target support platform operable to navigate on an extended surface, the platform supporting a target, the platform including a sensor array adapted to detect and register shot information about a shot generated by a shooter passing proximate the target, a transmitter on the platform adapted to transmit the shot information, and a receiver associated with the shooter adapted to receive the shot information and to provide shot information to the shooter. The platform may be a vehicle adapted to operate over a ground surface in any direction. The platform may be a watercraft. The platform may be a wheeled vehicle. The sensor array may be adapted to detect and register shot information including a location and direction of the shot. There may be a plurality of robotic target support platforms, each having a sensor array. The receiver may be adjacent to the shooter.

A target stand has a generally level bottom surface having at least one protrusion or cavity sized and shaped to leave an impression in an impressionable surface and a top surface having a plurality of wells configured to receive target supports. The plurality of wells may be configured to receive wooden stakes. The one or more protrusions or cavities may be shaped like animals or animal feet, such as pig's feet. The one or more protrusions may be sized and shaped to leave impressions of letters in the impressionable surface.

A modular underwater vehicle includes a hull having a series of modular sections, defining an interior housing, a propulsor coupled to a stern of the hull, a series of control surfaces coupled to the propulsor or the stern of the hull, and a power supply, a processor, and a nonvolatile memory device in the interior housing. The nonvolatile memory device has instructions stored therein which, when executed by the processor, cause the processor to supply power from the power supply to drive the propulsor and to actuate the plurality of control surfaces. At least one modular section of the series of modular sections is detachable.

An submarine target device comprising an acoustic receiver, an acoustic transmitter and processing means adapted to perform a first cycle of operations comprising detecting within an acoustic stream captured by the acoustic receiver, the start of a first signal corresponding to characteristics of at least one acoustic transmitter remote from at least one detector; triggering the recording of the first signal; detecting, within the acoustic stream, the end of the first signal and triggering the cessation of recording; then a second cycle of operations comprising detecting, within the acoustic stream, the start of a second signal corresponding to said characteristics; and triggering the transmission of the first signal, via the acoustic transmitter.

Shooting training systems have a self-propelled robotic target support platform operable to navigate on an extended surface, the platform supporting a target, the platform including a sensor array adapted to detect and register shot information about a shot generated by a shooter passing proximate the target, a transmitter on the platform adapted to transmit the shot information, and a receiver associated with the shooter adapted to receive the shot information and to provide shot information to the shooter. The platform may be a vehicle adapted to operate over a ground surface in any direction. The platform may be a watercraft. The platform may be a wheeled vehicle. The sensor array may be adapted to detect and register shot information including a location and direction of the shot. There may be a plurality of robotic target support platforms, each having a sensor array. The receiver may be adjacent to the shooter.