A power supply system for a floating mobile body or an underwater mobile body moving on or under water in a water channel or a water tank is configured to supply, in a non-contact manner, power from a power transmission apparatus to a power reception apparatus. The power transmission apparatus includes an AC power source that includes a first terminal and a second terminal and outputs an AC power wave, a power transmission inductance element having one terminal connected to the first terminal, and a first power transmission electrode provided in the water channel or the water tank and having an end portion connected to another terminal of the power transmission inductance element. The power reception apparatus includes a first power reception electrode, a second power reception electrode provided apart from the first power reception electrode, and a power reception inductance element connected to the first power reception electrode.

A power supply system for a floating mobile body or an underwater mobile body moving on or under water in a water channel or a water tank is configured to supply, in a non-contact manner, power from a power transmission apparatus to a power reception apparatus. The power transmission apparatus includes an AC power source that includes a first terminal and a second terminal and outputs an AC power wave, a power transmission inductance element having one terminal connected to the first terminal, and a first power transmission electrode provided in the water channel or the water tank and having an end portion connected to another terminal of the power transmission inductance element. The power reception apparatus includes a first power reception electrode, a second power reception electrode provided apart from the first power reception electrode, and a power reception inductance element connected to the first power reception electrode.

A fluid machine includes: a shaft portion; a shroud having an inside surface with a diameter decreasing from an upstream side toward a downstream side, a flow path being formed between the shroud and the shaft portion and having a flow path cross-sectional area decreasing toward the downstream side; a propeller rotatably provided about an axis between the shaft portion and the shroud and configured to pump a fluid from the upstream side toward the downstream side; and a motor provided to correspond to the propeller and including a rotor having a ring-like shape fixed to an outer circumference portion of the propeller and accommodated in the shroud and a stator having a ring-like shape surrounding the rotor and fixed in the shroud, in which a plurality of the propellers are provided to be spaced apart in the axis direction, the motors are provided in an identical number to the propellers to correspond to each of the propellers, and of a plurality of motors, the rotor of the motor positioned more on the downstream side has a smaller average outside diameter.

A fluid machine includes: a shaft portion; a shroud having an inside surface with a diameter decreasing from an upstream side toward a downstream side, a flow path being formed between the shroud and the shaft portion and having a flow path cross-sectional area decreasing toward the downstream side; a propeller rotatably provided about an axis between the shaft portion and the shroud and configured to pump a fluid from the upstream side toward the downstream side; and a motor provided to correspond to the propeller and including a rotor having a ring-like shape fixed to an outer circumference portion of the propeller and accommodated in the shroud and a stator having a ring-like shape surrounding the rotor and fixed in the shroud, in which a plurality of the propellers are provided to be spaced apart in the axis direction, the motors are provided in an identical number to the propellers to correspond to each of the propellers, and of a plurality of motors, the rotor of the motor positioned more on the downstream side has a smaller average outside diameter.

A sea scooter has a main housing, a left arm pivotably attached to the left side of the main housing, a right arm pivotably attached to the right side of the main housing, a left barrel secured to the left arm, and a right barrel secured to the right arm. Each barrel has a fan and a motor for propelling the sea scooter through water. The left and right arms are locked by the first and second locking assemblies into a folded configuration against the left and right sides of the main housing when the sea scooter is not in use, and the left and right arms are pivoted away from the left and right sides of the main housing in a use configuration when the sea scooter is in use in the water. The motor is sand-proof and water-proof.

A sea scooter has a main housing, a left arm pivotably attached to the left side of the main housing, a right arm pivotably attached to the right side of the main housing, a left barrel secured to the left arm, and a right barrel secured to the right arm. Each barrel has a fan and a motor for propelling the sea scooter through water. The left and right arms are locked by the first and second locking assemblies into a folded configuration against the left and right sides of the main housing when the sea scooter is not in use, and the left and right arms are pivoted away from the left and right sides of the main housing in a use configuration when the sea scooter is in use in the water. The motor is sand-proof and water-proof.

The present disclosure is directed to delivering nodes to an ocean bottom. A system can include a tether management system (TMS) towed by a vessel that moves on the surface of the ocean in a first direction. An underwater vehicle (UV) can be connected to the TMS and can move in a second direction that is different from the first direction. A thruster can be coupled to the TMS can cause the TMS to move in a third direction that is different from the first direction. A control unit can control the thruster to move the TMS in the third direction based on a cross-line location policy, and cause the UV to deploy nodes to target locations on the ocean bottom.

The present invention provides a device useful for transporting and/or handling equipment in an underwater environment for performing work, the device comprising at least the following components: a floating hydraulic unit (1) comprising a first enclosure (1a), preferably with a cylindrical wall, containing an electrical pump unit (6), a battery (8) suitable for electrically powering the pump unit, and a fluid tank (7), preferably containing oil, said first enclosure (1a) being suitable for being made submersible by first ballast (16); at least one hydraulic tool (3) connected or suitable for being connected to at least one hydraulic coupling (11, 12) of said hydraulic unit via at least one flexible hose (30); at least one independent float (4), preferably having a cylindrical wall, connected or suitable for being connected to said hydraulic tool (3) via a sling (5) of adjustable length, said float (4) being suitable for being made submersible by second ballast (43); and a wired remote control (2) for switching on or stopping the pump unit (6), said wired remote control comprising a handle (22) fitted with an electrical contactor (2a) at a first end of an electric wire (20), the second end of the electric wire (20) being connected or suitable for being connected at least to said pump unit (6).

The present invention provides a device useful for transporting and/or handling equipment in an underwater environment for performing work, the device comprising at least the following components: a floating hydraulic unit (1) comprising a first enclosure (1a), preferably with a cylindrical wall, containing an electrical pump unit (6), a battery (8) suitable for electrically powering the pump unit, and a fluid tank (7), preferably containing oil, said first enclosure (1a) being suitable for being made submersible by first ballast (16); at least one hydraulic tool (3) connected or suitable for being connected to at least one hydraulic coupling (11, 12) of said hydraulic unit via at least one flexible hose (30); at least one independent float (4), preferably having a cylindrical wall, connected or suitable for being connected to said hydraulic tool (3) via a sling (5) of adjustable length, said float (4) being suitable for being made submersible by second ballast (43); and a wired remote control (2) for switching on or stopping the pump unit (6), said wired remote control comprising a handle (22) fitted with an electrical contactor (2a) at a first end of an electric wire (20), the second end of the electric wire (20) being connected or suitable for being connected at least to said pump unit (6).

This disclosure relates generally to waste collection, storage, and retrieval from water. Aspects of this disclosure relate to submersible cleaning vehicles, filter systems, ships, communication systems, autonomous navigation, and computer systems. The submersible cleaning vehicle can navigate underwater to capture waste in filters. Abase station can support the submersible cleaning vehicle.