A method of operating a personal propulsion device, including coupling a personal watercraft to a personal propulsion device having a platform configured to support a passenger, wherein the platform is coupled to one or more fluid outlets, and wherein the personal watercraft has first and second fluid discharge ports; delivering a pressurized fluid from the first fluid discharge port to the one or more fluid outlets such that the fluid outlets discharge the pressurized fluid to directly elevate the platform; and discharging pressurized fluid from the second fluid discharge port to move the personal watercraft.

A personal propulsion device, including a platform configured to support at least one passenger; a first fluid outlet coupled to the platform; a first fluid conduit in fluid communication with the first fluid outlet; and a personal watercraft having first and second fluid discharge ports, wherein the first fluid discharge port is in fluid communication with the first fluid conduit, and the second fluid discharge port is configured to discharge pressurized fluid to move the personal watercraft.

An underwater propulsion system is disclosed comprising a foot board with one or more battery-powered propulsion units. A throttle control system may be enabled in the foot board such that a movement of the user's foot controls the throttle. Flattened Lithium batteries allow thin lightweight construction of the foot board. Use of trolling motors as propulsion units provides thrust advantages over pre-existing underwater scooters.

An underwater propulsion system is disclosed comprising a foot board with one or more battery-powered propulsion units. A throttle control system may be enabled in the foot board such that a movement of the user's foot controls the throttle. Flattened Lithium batteries allow thin lightweight construction of the foot board. Use of trolling motors as propulsion units provides thrust advantages over pre-existing underwater scooters.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

Disclosed is a propulsion system that comprises a power source coupled to a flotation device. The power source can be rechargeable. The system further comprises at least one thruster configured to be coupled to a person. A power cable operably couples the power source and the at least one thruster. The system is configured such that the at least one thruster propels the person through the water while the power source remains at a surface of the water and coupled to the flotation device. The system can include an air supply assembly.

A wearable diving and swimming propulsion apparatus, constituted of: an underwater unit; and a securing member, wherein the underwater unit comprises: at least one fin; at least one motor; and at least one thruster configured to generate underwater thrust responsive to the at least one motor, wherein each of the at least one thruster comprises a propellor, and wherein the securing member is configured to secure the underwater unit to a diver.