A system includes an aerial drone with a queen component disposed thereon and an underwater robot with a worker component disposed thereon. The queen component is in electrical communication with the aerial drone and the worker component is in electrical communication with the underwater robot. The queen component is configured to steer a laser beam to locate and track the worker component and to sense light from the laser beam reflected by the worker component. A method includes deploying an aerial drone with a queen component disposed thereon in a first medium and determining a location of a robot in a second medium with a worker component disposed thereon using the aerial drone. The second medium is different from the first medium.

A vessel secure remote access system and method, comprising; a maintenance access device arranged on the vessel, configured to be connected to vessel operation systems and further to be connected to a remote service station via a first secure link, wherein the remote service station is configured to perform maintenance tasks on the vessel operation systems. A remote control switch is arranged on the vessel configured to be connected to a remote control station, via a second secure link, wherein a disabled state the maintenance access device blocks access to the vessel operation systems, and in an enabled state allows access to the vessel operation systems. The remote control switch is configured to enable or disable the vessel maintenance access device based on commands from the remote control station.

A watercraft comprises a motor, an inertial mass, and a fin. The motor oscillates the inertial mass about an axis, producing a torque reaction on and oscillation of the motor. Oscillation of the motor is communicated to the fin, producing thrust.

Aerodynamic aquatic weed removal and decontamination devices and decontamination methods are disclosed. In an embodiment, the aerodynamic aquatic weed removal and decontamination device includes a boat body and a shore-based device for remotely controlling the boat body. The boat body includes a power unit, a weed removal and decontamination unit, a positioning system, an environment perception system, and a shipborne controller. The power unit includes an engine, a propeller connected to the engine, and a rudder servo motor configured to control a heading of the boat body. The weed removal and decontamination unit includes a mesh conveyor. The positioning system includes a positioner configured to obtain real-time location information and heading information of the boat body. The environment perception system includes a wind sensor and a visual sensor. The shipborne controller is configured to control a navigation state of the boat body.

A moving body that moves at least one of in water or along a water surface, in accordance with a person moving on the water by stepping with feet in an alternating manner, includes a movement information acquiring unit that acquires information concerning movement of a foot of the person or a worn item worn on the foot of the person, and a control unit that, when the foot of the person moves away from the moving body, causes the moving body to move to a stepping destination of the foot based on the information acquired by the movement information acquiring unit. A moving body system includes the moving body and the worn item.

A remote survey system includes an unmanned surface vehicle that includes a body, a propulsion system coupled to the body to provide mobility to the unmanned surface vehicle to traverse a surface of a waterbody, and a thickness detection assembly mounted to a hull of the body and including one or more thickness detection cameras. A central computer system is located at a command center and in wireless communication with the unmanned surface vehicle via a communication module. The one or more thickness detection cameras are positioned to obtain one or more images or videos of an air-oil-water interface on the surface of the waterbody, and a thickness of a released substance present on the surface of the waterbody is determined based on the one or more images or videos of the air-oil-water interface.

A decoy system that includes a GPS receiver for identifying the position of the decoy and a steering and propulsion system that is used to navigate the decoy in accordance with requirements defined within a navigational pattern.

A decoy system with a ballast that holds batteries to power the various elements of the decoy system including a Global Positioning System or location based receiver and circuitry that automatically controls the navigation of the decoy based on real-time location and desired/selected pattern information. The system can include a decoy with a propulsion system and steering system and an interface to a smart phone running a remote control app. The remote control app can be used to control the navigation of the decoy in view of the location information received from the GPS.

A waterfowl capturing assembly and system includes a bracket is removably attachable to a watercraft. A frame is attached to the bracket and extends forwardly therefrom. The frame includes a receiving space having a receiving opening directed forward of the base. A panel is positioned on the frame and forms a scoop extending across the receiving space. The panel is used to capture and hold waterfowl floating on a body of water such that the watercraft can be used to retrieve the waterfowl.

Disclosed is a system 1000 for determining a virtual representation of at least part of an environment 800 that is navigable by a ship 700. The system has at least one beacon 101, 102, 201, 202, 301, 302, 401-403 remote from the ship. The or each beacon comprises at least one sensor 411-415 for sensing surroundings information representative of at least part of the environment, a transmitter 420, and a controller 430 connected to the at least one sensor and configured to cause the surroundings information to be transmitted via the transmitter. The system also comprises a control centre 500 remote from the ship. The control centre comprises a receiver 520 configured to receive the surroundings information, and a control unit 530 connected to the receiver and configured to determine a virtual representation of at least part of the environment based on the surroundings information. The virtual representation may comprise a topographical map, such as a LIDAR map.