Maritime threat-sensing buoys include sensors—such as acoustic, radio frequency, visual, or other sensing devices—that track, identify, or classify hypersonic or underwater threats in real time. Some examples of suitable sensing devices include microphones, radio-frequency (“RF”) detectors (for example, RF antennas), infrared detectors, and machine-vision detectors. The maritime threat-sensing buoys may be deployed using aerial or maritime vessels, and may host payloads, such as threat-sensing mechanisms, batteries to power the threat-sensing mechanisms, solar panels configured to deliver electricity or other energy to the batteries or other devices, and other cargo or contents.

Maritime threat-sensing buoys include sensors—such as acoustic, radio frequency, visual, or other sensing devices—that track, identify, or classify hypersonic or underwater threats in real time. Some examples of suitable sensing devices include microphones, radio-frequency (“RF”) detectors (for example, RF antennas), infrared detectors, and machine-vision detectors. The maritime threat-sensing buoys may be deployed using aerial or maritime vessels, and may host payloads, such as threat-sensing mechanisms, batteries to power the threat-sensing mechanisms, solar panels configured to deliver electricity or other energy to the batteries or other devices, and other cargo or contents.

A container for housing and launching sonar buoys of class G (sonobuoy) including a casing partitioned into two portions and automatic and simplified valve means to sequentially eject the buoys from the container.

The present disclosure relates to a stand-alone buoy with a seawater battery, which includes a main body formed to have a predetermined buoyancy so as to float on seawater and provided with a seawater space therein and an inlet formed to introduce the seawater into the seawater space, a position notification part installed on the main body and configured to notify a user of a position of the main body, a solar cell part installed on the main body and configured to generate electricity using sunlight, and a seawater battery unit installed in the seawater space to be submerged in the seawater introduced into the seawater space and configured to react with the seawater to store the electricity provided from the solar cell part and to provide the stored electricity to the position notification part so as to operate the position notification part.

The present disclosure relates to a stand-alone buoy with a seawater battery, which includes a main body formed to have a predetermined buoyancy so as to float on seawater and provided with a seawater space therein and an inlet formed to introduce the seawater into the seawater space, a position notification part installed on the main body and configured to notify a user of a position of the main body, a solar cell part installed on the main body and configured to generate electricity using sunlight, and a seawater battery unit installed in the seawater space to be submerged in the seawater introduced into the seawater space and configured to react with the seawater to store the electricity provided from the solar cell part and to provide the stored electricity to the position notification part so as to operate the position notification part.

Various examples of methods and systems are provided for increasing productivity of one or more photosynthetic cultures via self-powered energy output systems. In one example, a system includes a waterproof casing and an energy output module enclosed within the waterproof casing. The waterproof casing is configured to be neutrally buoyant in an enclosure comprising the one or more photosynthetic cultures. In another example, a method includes placing a self-powered energy output system within an enclosure, the self-powered energy output system being neutrally buoyant within the enclosure. The method further includes causing turbulence within the enclosure, and the self-powered energy output system harvests energy to power the self-powered energy output system via the turbulence within the enclosure.

The invention relates to a buoyant photobioreactor arrangement, wherein the photobioreactor arrangement is buoyant on a surface water, and comprises a) a transparent photobioreactor container, b) a floating body that is buoyant on the surface water and c) a holding device arranged at or on the floating body holding the transparent photobioreactor container, the photobioreactor container being able to be lowered into the surface water by means of the holding device.

The invention relates to a buoyant photobioreactor arrangement, wherein the photobioreactor arrangement is buoyant on a surface water, and comprises a) a transparent photobioreactor container, b) a floating body that is buoyant on the surface water and c) a holding device arranged at or on the floating body holding the transparent photobioreactor container, the photobioreactor container being able to be lowered into the surface water by means of the holding device.

The invention relates to a buoy comprising a buoyant, plastic core component, and a plurality of detachable flotation components that support and surround the core component. The buoy is preferably more than 2.5 metres diameter, but the diameter of the core component is preferably less than or equal to 2.35 metres diameter. This facilitates transport in a single shipping container. A novel tie bar assembly and novel lifting/mooring mounts are also disclosed.

A buoy position monitoring method includes a buoy positioning step, an unmanned aerial vehicle receiving step and an unmanned aerial vehicle flying step. In the buoy positioning step, a plurality of buoys are put on a water surface. Each of the buoys is capable of sending a detecting signal. Each of the detecting signals is sent periodically and includes a position dataset of each of the buoys. In the unmanned aerial vehicle receiving step, an unmanned aerial vehicle is disposed on an initial position, and the unmanned aerial vehicle receives the detecting signals. In the unmanned aerial vehicle flying step, when at least one of the buoys is lost, the unmanned aerial vehicle flies to a predetermined position to get contact with the at least one buoy that is lost.