An underwater power supply system includes: a working apparatus arranged underwater with at least one power receiving pad; a first battery unit detachably attached to the apparatus with a power supplying pad and battery, the pad configured to supply electric power to the power receiving pad in a non-contact state, the battery electrically connected to the power supplying pad; and an underwater sailing body configured to shuttle between the apparatus and a surface ship or an underwater station suspended from the surface ship, the body configured to carry a second battery unit to the apparatus, detach the first battery unit from the apparatus, and attach the second battery unit to the apparatus, the second battery unit including a power supplying pad and battery, the pad configured to supply the electric power to the power receiving pad in a non-contact state, the battery electrically connected to the power supplying pad.

Systems and methods for deployment of ocean bottom seismic receivers into a body of water having a surface and a seabed. The system can include a remote operated vehicle (ROV) comprising a first wireless communication device. The system can include a seismic data receiver deployed on the seabed comprising a second wireless communication device. The first wireless communication device can be configured to communicate with the second wireless communication device. The ROV can move to a position adjacent to the seismic data receiver. The ROV can establish a wireless link with the seismic data receiver via the first communication device and second wireless communication device.

Disclosed is a surface vessel with motorised mechanical propulsion including a fusiform hull and a keel in the bottom part of the hull, the hull having an elongate shape in a longitudinal direction of the vessel, the keel including, at the bottom end of same, a bulb linked to the hull by a linking part of the keel, the maximum width of the linking part being smaller than the maximum width of the bulb, the maximum length of the linking part being smaller than the maximum length of the bulb, the lengths and widths being considered respectively in the longitudinal direction of the vessel and a horizontal transverse direction perpendicular to the longitudinal direction. The hull has a total width to total length ratio of less than 0.2 and a maximum length of less than 20 metres.

The present disclosure relates to drifters that float and take measurements at, or very near, a surface of a body of water. The drifters may have a design that reduces wind force effects but does not diminish Stokes drift force effects. The drifters may have two opposing exterior surfaces with antennas and sensors on each of the opposing surfaces so that the drifters may always utilize at least some of the antennas and sensors, regardless of the drifter's orientation in the water.

A seabed object detection system is provided. The system can include a receiver array. The receiver array can include a plurality of receivers disposed on a plurality of streamers. The plurality of streamers can include a central port side streamer, a central starboard side streamer, an auxiliary port side streamer and an auxiliary starboard side streamer. The system can include a source array. The source array can include a plurality of sources. The plurality of sources can include a central port side source, a central starboard side source, an auxiliary port side source, and an auxiliary port side streamer. The source array towed during a first pass can define a first path. The source array towed during a second pass can define a second path. The first path can be interleaved with the second path such that the first path overlaps the second path.

A system for monitoring a remote underwater location using an unmanned underwater vessel (5). The system includes an unmanned surface vessel (8), a communication unit (7) for submerged location and connected to the unmanned surface vessel (8) and in which the unmanned surface vessel has a position tracking control system for controlling the position of that vessel on a body of water and relative to the unmanned underwater vehicle (5). The communication unit (7) has a first wireless communication arrangement for communication with the unmanned underwater vehicle, a second wired communication arrangement (10) for communication with the unmanned surface vessel and the unmanned surface vessel has a third communication arrangement for communication with an operator or observer (1) remote from the unmanned surface vessel and the unmanned underwater vehicle. The three communication arrangements are arranged in series such that, in use, the operator or observer may communication with the unmanned/autonomous underwater vehicle via the unmanned surface vessel, the wired connection between the unmanned surface vessel and the communication unit, and the wireless connection between the communication unit and the unmanned underwater vehicle.

The present invention discloses an Unmanned Surface Vehicle (USV) for aquatic ecosystem monitoring and restoration and a control method for aquatic ecosystem restoration. A control cabin, a water-quality monitoring cabin, and a water treatment equipment compartment are arranged inside a cabin of a hull of the USV for aquatic ecosystem monitoring and restoration, and a water-surface photographing device and a remote communications device are arranged outside the cabin; the control cabin is connected to the water-quality monitoring cabin, the water-surface photographing device, and the water treatment equipment compartment; the water quality parameters include five conventional water quality parameters and eutrophication-based water quality parameters; and the remote communications device is connected to the water-quality monitoring cabin and the water treatment equipment compartment. The present invention can implement real-time, automatic, and dynamic aquatic ecosystem monitoring, early warning of the water pollution, and self-adaptive ecological restoration based on an artificial intelligent control algorithm.

The present invention involves a system for the release of low relief, self-orienting deployable payloads from a platform such as a submersible vehicle and a mechanism of passive buoyancy compensation of the vehicle. The system secures one or more payloads by a vacuum force without an additional mechanical restraining mechanism and deployment of a payload is accomplished by disengaging the vacuum hold to release the payload for its intended function. Once deployed, the payload may reorient itself to a functional orientation without additional assistance.

The present invention discloses an Unmanned Surface Vehicle (USV) for aquatic ecosystem monitoring and restoration and a control method for aquatic ecosystem restoration. A control cabin, a water-quality monitoring cabin, and a water treatment equipment compartment are arranged inside a cabin of a hull of the USV for aquatic ecosystem monitoring and restoration, and a water-surface photographing device and a remote communications device are arranged outside the cabin; the control cabin is connected to the water-quality monitoring cabin, the water-surface photographing device, and the water treatment equipment compartment; the water quality parameters include five conventional water quality parameters and eutrophication-based water quality parameters; and the remote communications device is connected to the water-quality monitoring cabin and the water treatment equipment compartment. The present invention can implement real-time, automatic, and dynamic aquatic ecosystem monitoring, early warning of the water pollution, and self-adaptive ecological restoration based on an artificial intelligent control algorithm.

Techniques are provided for an unmanned surface vehicle including a vehicle body and a rigid square-rig wing coupled with the primary vehicle body. The rigid square-rig wing includes a first surface configured to interact with wind to generate a force that propels the primary vehicle body in a direction of travel that is primarily composed of drag, and a second surface configured to interact with the wind to generate a force that propels the primary vehicle body in a direction of travel that is primarily composed of lift. The unmanned surface vehicle further includes a rudder and a control system comprising a controller, the control system configured to determine a rudder position and generate a signal to position the rudder to the rudder position.