Abstract: A method includes receiving electric field data regarding an electric field that is detected in an underwater environment by a plurality of electrodes mounted on a first structure, and receiving sensor data from at least one sensor mounted on the first structure. The sensor data relates to a sensed location of a second structure. The method includes determining location data including information regarding a location of the second structure relative to the first structure in the underwater environment based on the sensor data, and determining one or more characteristics of the second structure based on the electric field data and the location data.

Abstract: A method includes receiving electric field data regarding an electric field that is detected in an underwater environment by a plurality of electrodes mounted on a first structure, and receiving sensor data from at least one sensor mounted on the first structure. The sensor data relates to a sensed location of a second structure. The method includes determining location data including information regarding a location of the second structure relative to the first structure in the underwater environment based on the sensor data, and determining one or more characteristics of the second structure based on the electric field data and the location data.

Abstract: The invention provides an encapsulated magnetically geared brushless electric marine propulsion system with the principle components arranged axially around the central shaft. The marine propulsion system includes: the brushless DC motor, comprised of the stator fixed to the central shaft and motor magnets fixed within the motor rotor coupled to the central shaft using precision ball bearings; the high-speed magnetic gear rotor coupled to the motor rotor comprising an alternating array of magnets fixed to a ferromagnetic backing; the environmental barrier which protects the motor and additionally houses pole pieces to modulate magnetic flux; the low-speed magnetic gear rotor coupled to the central shaft and comprised of an alternating array of magnets fixed to a ferromagnetic backing; the propeller coupled to the low-speed magnetic gear rotor; and the shroud coupled to the struts of the motor mounting system.

Abstract: The invention provides an encapsulated magnetically geared brushless electric marine propulsion system with the principle components arranged axially around the central shaft. The marine propulsion system includes: the brushless DC motor, comprised of the stator fixed to the central shaft and motor magnets fixed within the motor rotor coupled to the central shaft using precision ball bearings; the high-speed magnetic gear rotor coupled to the motor rotor comprising an alternating array of magnets fixed to a ferromagnetic backing; the environmental barrier which protects the motor and additionally houses pole pieces to modulate magnetic flux; the low-speed magnetic gear rotor coupled to the central shaft and comprised of an alternating array of magnets fixed to a ferromagnetic backing; the propeller coupled to the low-speed magnetic gear rotor; and the shroud coupled to the struts of the motor mounting system.