An agricultural amphibious bait feeding boat includes a boat body. A bait feeding device is fixed to one end of the boat body, and a propulsion device is fixed to the other end of the boat body. The boat body includes two foam floating bodies, foam fixing carbon rods, a transverse carbon rod, tube ferrule fixing assemblies, and tee joints. The two foam floating bodies include a left foam floating body and a right foam floating body, the foam fixing carbon rods parallel to each other are respectively arranged above the two foam floating bodies, and the foam floating bodies and the foam fixing carbon rods are fixed through the tube ferrule fixing assemblies The transverse carbon rod is connected to the foam fixing carbon rods through the tee joints, and the left foam floating body and the right foam floating body are fixedly connected to each other.

The amphibious unmanned patrol vehicle includes a buoy, a waterproof cable and a submersible amphibious vehicle. An end of the waterproof cable is connected to a first controller of the buoy; and another end thereof is connected to a second controller of the submersible amphibious vehicle. A bottom end of the buoy is connected to a top end of the submersible amphibious vehicle which is configured to realize movement and operation of a whole system. The waterproof cable is configured to connect the submersible amphibious vehicle, and the buoy configured to ensure real-time communication between the submersible amphibious vehicle and an external environment during operation of the submersible amphibious vehicle. A height difference between an upper surface and a lower surface of the automatic reeling and unreeling cable device is equal to a thickness of the waterproof cable. The length of the waterproof cable is adjusted automatically in real time.

Systems, apparatus, and methods for remote monitoring and piloting of a ship. Examples include a method of delivering remote monitoring equipment to the ship and establishing a data and communication exchange for shore-based pilotage of the ship from a remote location. The equipment usable for remote monitoring and communication between the ship and pilot (at the remote location) is stored in a package and delivered to the ship by unmanned aircraft. The package is distributed and installed by ship's crew to specified locations. The remote pilot while located ashore has access to all the information that is needed to assist in safe navigation of the ship by exchanging data and/or streaming real time video from the ship to shore. Additionally, the system may extract navigational data from the ship and transmit it to shore in real-time.

An unmanned vehicle including a vehicle body, a propulsion system, a maneuvering system, a vehicle control system, a buoyancy control system, a sensor system, and at least one power supply is disclosed. The propulsion system, maneuvering system, vehicle control system, buoyancy control system, sensor system, and power supply are carried by the vehicle body. The sensor system includes a sensor adapted to detect an item of interest and provide an item of interest signal to the vehicle control system. The vehicle control system is adapted to receive the item of interest signal, identify an item of interest classification and provide a classification signal. The classification signal is determined by the item of interest classification and is utilized by the propulsion system, maneuvering system, vehicle control system, or buoyancy control system to avoid physical, electrical, acoustic, or thermal detection of the unmanned vehicle by the item of interest.

A retrofit propulsion apparatus attaches to an avian decoy to provide both propulsion and steering to the decoy under remote control by the user. The retrofit propulsion apparatus attaches to decoys with different keel geometries without the need to modify the retrofit propulsion apparatus for each decoy keel geometry. The apparatus includes a housing that contains electrical circuitry with control circuitry that couples to inboard water propulsion devices to provide thrust and steering to the decoy. A housing cover sealably attaches to the housing to seal the housing. The housing cover includes a slot that receives a vertical member of a decoy keel. The housing includes an angled channel that receives both a decoy with a decoy bottom member with vertical spaced apart sides and a decoy with a decoy bottom member with angled sides.

Multiple autonomous underwater vehicles (AUVs) are operated by a host platform by configuring the AUVs with intermediate nodes (such as unmanned surface vehicles (USVs)) so as to allow the host platform to manage multiple AUVs. The intermediate nodes act as a relay for communications between the host platform and the AUVs allowing the host platform to scale to higher numbers of vehicles thus simultaneously operating the entire fleet of AUVs. The AUVs may provide underwater mapping data. The host platform may be stationary. The host platform may communicate with the intermediate nodes by satellite.

An unmanned vehicle including a vehicle body, propulsion system, maneuvering system, vehicle control system, rack, sensor, and a power supply. The vehicle control may be used to control the unmanned vehicle in combination with the propulsion and the maneuvering system. The rack may include a retractable mount that may move between a down position and an up position. The sensor system may include a plurality of transient object detection sensors. The plurality of transient object detection sensors may include a sensor adapted to detect an item of interest and may provide an item of interest signal to the vehicle control system. The vehicle control system may identify an item of interest classification and may provide a classification signal. The classification signal may be determined by the item of interest classification and may be utilized to avoid detection of the unmanned vehicle by the item of interest.

A release system for a tether line includes a housing having a side that is at least partially open. A tether lead within the housing is adjacent to the side of the housing. A release mechanism in the housing includes a shackle having a closed end and an open end. The shackle is disposed in the housing at a portion therein that is lower than that of the tether lead. The release mechanism also includes a hinge for mounting the shackle within the housing. In a tether-retention mode, the open end of the shackle faces the top of the housing and the shackle is prevented from rotation about the hinge. In a tether-release mode, the shackle is free to rotate about the hinge under gravity wherein the open end of the shackle rotates to face the side of the housing.

Multiple autonomous underwater vehicles (AUVs) are operated by a single host surface vehicle (HSV) by configuring the AUVs with intermediate nodes (such as unmanned surface vehicles (USVs)) so as to allow the HSV to manage multiple AUVs. The intermediate nodes act as a relay for communications between the HSV and the AUVs allowing the HSV to scale to higher numbers of vehicles thus simultaneously operating the entire fleet of AUVs. The AUVs may provide underwater mapping data.

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.