A waterproof camera system that can easily perform underwater image pickup and overwater image pickup. The waterproof camera system includes an image pickup apparatus, a waterproof casing that hermetically stores the image pickup apparatus. The image pickup apparatus includes a first housing that includes a lens unit and a second housing that holds the first housing. The waterproof casing includes a first section that surrounds a circumference of the first housing and a second section that surrounds a circumference of the second housing. The waterproof camera system has buoyancy that floats the waterproof camera system on a water surface in both a first posture in which the first section of the waterproof casing is in an underwater side and a second posture in which the first section is in an overwater side in a state where the image pickup apparatus is stored.

An underwater communications network may include spaced apart nodes on a bottom of a body of water. The underwater communications network may also include fiber optic cabling connecting the spaced apart nodes. Each node may include a frame, a node short-range navigation device carried by the frame, and an unmanned underwater vehicle (UUV) carried by the frame after delivering a fiber optic cable along a navigation path from an adjacent node. The UUV may be configured to cooperate with the node short-range navigation device during an end portion of the navigation path adjacent the frame.

The present invention discloses a submarine seismic monitoring apparatus and system based on the submarine Internet of things. A sea surface buoy network device and a submarine network device in the monitoring apparatus are connected by using an anchor system; the submarine network device and a submarine seismic detection device are connected by using a submarine photoelectric composite cable; there are one or more submarine seismic detection devices; the sea surface buoy network device includes a satellite transceiver apparatus, an Internet of things platform server, a network time server, and an autonomous energy supply apparatus; the submarine network device includes a photoelectric separation cabin, a submarine server, a bottom anchor weight block, and a mechanical releaser; and the submarine seismic detection device includes multiple submarine seismometer network nodes, where the multiple submarine seismometer network nodes are successively connected in series end to end by using the submarine photoelectric composite cable. The apparatus and system in the present invention not only can be used for submarine structure detection, but also can be used for earthquake disaster and tsunami warning, and can implement autonomous energy supply, long timing, and unattended operation.

The present invention discloses a submarine seismic monitoring apparatus and system based on the submarine Internet of things. A sea surface buoy network device and a submarine network device in the monitoring apparatus are connected by using an anchor system; the submarine network device and a submarine seismic detection device are connected by using a submarine photoelectric composite cable; there are one or more submarine seismic detection devices; the sea surface buoy network device includes a satellite transceiver apparatus, an Internet of things platform server, a network time server, and an autonomous energy supply apparatus; the submarine network device includes a photoelectric separation cabin, a submarine server, a bottom anchor weight block, and a mechanical releaser; and the submarine seismic detection device includes multiple submarine seismometer network nodes, where the multiple submarine seismometer network nodes are successively connected in series end to end by using the submarine photoelectric composite cable. The apparatus and system in the present invention not only can be used for submarine structure detection, but also can be used for earthquake disaster and tsunami warning, and can implement autonomous energy supply, long timing, and unattended operation.

Increased energy harvesting is realized using a nonlinear buoy geometry for reactive power generation. By exploiting the nonlinear dynamic coupling between the buoy geometry and the potential wideband frequency spectrum of incoming waves in the controller/buoy design, increased power can be captured in comparison to conventional wave energy converter designs. In particular, the reactive power and energy storage system requirements are inherently embedded in the nonlinear buoy geometry, therefore requiring only simple rate-feedback control.

Increased energy harvesting is realized using a nonlinear buoy geometry for reactive power generation. By exploiting the nonlinear dynamic coupling between the buoy geometry and the potential wideband frequency spectrum of incoming waves in the controller/buoy design, increased power can be captured in comparison to conventional wave energy converter designs. In particular, the reactive power and energy storage system requirements are inherently embedded in the nonlinear buoy geometry, therefore requiring only simple rate-feedback control.

Disclosed herein is a sonobuoy cartridge percussion apparatus. A sonobuoy cartridge percussion apparatus according to an aspect of the present invention includes: a CO.sub.2 cartridge filled with CO.sub.2 gas; a percussion ram configured to hit one end of the CO.sub.2 cartridge; a spring configured to enable the percussion ram to hit the CO.sub.2 cartridge by applying force to the percussion ram; a CO.sub.2 cartridge fastening body configured such that a spring reception hole is formed therein to enable the spring to be compressed and inserted into the spring reception hole; and a thread-shaped fastening member configured such that one end thereof is wound around the percussion ram and the other end thereof is passed through the spring reception hole, wherein the fastening member compresses the spring, and is fastened to a stop protrusion formed on the CO.sub.2 cartridge fastening body.

A slurry transporting riser assembly includes a buoyant device that has an outer surface with a first end portion, a second end portion and an elongated portion. The elongated portion extends from the first end portion to the second end portion. The buoyant device is shaped and configured to attach to a slurry pipe. The elongated portion of the outer surface has a concaved section that extends from the first end portion to the second end portion. The concaved section has a shape that complements an outer radius of the slurry pipe with the buoyant device attached to the slurry pipe.

Systems, methods, and apparatuses are described herein for providing electrical power to a marine vehicle. In some aspects, a marine vehicle includes a power system arranged to receive and store electrical power delivered from a solar panel assembly. The power system may include one or more batteries. The vehicle also includes a processor arranged to determine an extension time and an retraction time for a solar panel assembly and a controller that, in response to instructions from the processor, is arranged to extend the solar panel assembly and retract the solar panel assembly. The solar panel assembly is arranged to be configured in at least one of an extended position and a retracted position. The solar panel assembly includes one or more solar panels where the solar panel assembly is in electrical communication with the power system.

Systems, methods, and apparatuses are described herein for providing electrical power to a marine vehicle. In some aspects, a marine vehicle includes a power system arranged to receive and store electrical power delivered from a solar panel assembly. The power system may include one or more batteries. The vehicle also includes a processor arranged to determine an extension time and an retraction time for a solar panel assembly and a controller that, in response to instructions from the processor, is arranged to extend the solar panel assembly and retract the solar panel assembly. The solar panel assembly is arranged to be configured in at least one of an extended position and a retracted position. The solar panel assembly includes one or more solar panels where the solar panel assembly is in electrical communication with the power system.