The present application relates an automatically arranged emergency shipwreck position-indicating buoy, which belongs to the technical field of navigation (ship) aids. The automatically arranged emergency shipwreck position-indicating buoy comprises a gasbag, a rope, a high-pressure gas storage device, and a position-indicating light assembly; a rear end of the rope is wound onto a shaft arranged on the gasbag and a front end of the rope is arranged on a ship; a gas outlet of the high-pressure gas storage device is communicated with a gas inlet of the gasbag, and a sealing device is arranged at the gas outlet of the high-pressure gas storage device, and the sealing device is connected to the rope by a connector so as to be arranged on the ship; the position-indicating light assembly is arranged above the gasbag. The present application can be automatically arranged when a ship sinks, and the position of the position-indicating buoy changes as the position of the shipwreck changes in order to indicate the position of the shipwreck and provide convenience for passing ships and shipwreck operation.

Devices and methods for aiding a large area search for objects. A searcher transmits interrogation signals of long range relative to the return range to be received by a device at the target object. The target device responds with a ping signal modified to be more easily found by means of information contained in the interrogation signal. The information may be in the nature of the received signal or data encoded and embedded. The target device may use a microprocessor to do complex operations using the information from the interrogation signal and other information. Detection of a weak ping is facilitated by such means as being beamed in the direction of the interrogation, arriving at a predictable time, or having parameters adapted to values requested by the searcher. The object is then intercepted with help of the ping or other signals from the device.

Devices and methods for aiding a large area search for objects. A searcher transmits interrogation signals of long range relative to the return range to be received by a device at the target object. The target device responds with a ping signal modified to be more easily found by means of information contained in the interrogation signal. The information may be in the nature of the received signal or data encoded and embedded. The target device may use a microprocessor to do complex operations using the information from the interrogation signal and other information. Detection of a weak ping is facilitated by such means as being beamed in the direction of the interrogation, arriving at a predictable time, or having parameters adapted to values requested by the searcher. The object is then intercepted with help of the ping or other signals from the device.

Disclosed herein is a floating recovery device for underwater equipment. The device includes a recovery body partitioned into a first compartment, a second compartment, and a third compartment by a partition wall, first and second pressure tanks installed in the first and second compartments, respectively, first and second striking parts fastened to the first and second pressure tanks, respectively, to strike the first and second pressure tanks, first and second actuators wirelessly actuating the first and second striking parts, respectively, and a buoyancy generator installed in the third compartment, and inflated by high-pressure gas introduced from the first and second pressure tanks, thus generating buoyancy. Such a configuration allows the pressure tank to be wirelessly struck for the purpose of supplying high-pressure gas to the buoyancy generator and floating the underwater equipment in the event of the loss of the underwater equipment.

Disclosed herein is a floating recovery device for underwater equipment. The device includes a recovery body partitioned into a first compartment, a second compartment, and a third compartment by a partition wall, first and second pressure tanks installed in the first and second compartments, respectively, first and second striking parts fastened to the first and second pressure tanks, respectively, to strike the first and second pressure tanks, first and second actuators wirelessly actuating the first and second striking parts, respectively, and a buoyancy generator installed in the third compartment, and inflated by high-pressure gas introduced from the first and second pressure tanks, thus generating buoyancy. Such a configuration allows the pressure tank to be wirelessly struck for the purpose of supplying high-pressure gas to the buoyancy generator and floating the underwater equipment in the event of the loss of the underwater equipment.

The present invention addresses the problem of achieving communication with the outside at a position different from a position at which a surfacing device has surfaced. A surfacing device 100 is released from a submerging body 200 sunk underwater UW to surface overwater OW and communicates with an external communicator 300. The surfacing device 100 comprises: a surfacing unit which surfaces, from underwater UW to overwater OW, the surfacing device 100 released from the submerging body 200; a communication unit which can transmit target information to the external communicator 300 after the surfacing device 100 has surfaced from underwater UW to overwater OW; and a moving unit which moves a target portion, which is at least a part of the surfacing device 100, after the surfacing device 100 has surfaced from underwater UW to overwater OW.

The present invention addresses the problem of achieving communication with the outside at a position different from a position at which a surfacing device has surfaced. A surfacing device 100 is released from a submerging body 200 sunk underwater UW to surface overwater OW and communicates with an external communicator 300. The surfacing device 100 comprises: a surfacing unit which surfaces, from underwater UW to overwater OW, the surfacing device 100 released from the submerging body 200; a communication unit which can transmit target information to the external communicator 300 after the surfacing device 100 has surfaced from underwater UW to overwater OW; and a moving unit which moves a target portion, which is at least a part of the surfacing device 100, after the surfacing device 100 has surfaced from underwater UW to overwater OW.

A method of locating an underwater based system, the method including determining the underwater based system's geo-location, encoding the underwater based system's geo-location for RF transmission, encoding the underwater based system's geo-location for acoustic transmission, and transmitting RF and acoustic signals containing the encoded geo-location to a receiving station. A locator for locating an underwater based system including a buoy, a global positioning system having an antenna and a receiver, an RF transmission system including an antenna and a transmitter, an underwater acoustic transducer, and a locator control unit adapted to determine the underwater based system's geo-location, encode the underwater based system's geo-location for RF transmission, encode the underwater based system's geo-location for acoustic transmission, and transmit RF and underwater acoustic signals containing the encoded geo-location.

A method of locating an underwater based system, the method including determining the underwater based system's geo-location, encoding the underwater based system's geo-location for RF transmission, encoding the underwater based system's geo-location for acoustic transmission, and transmitting RF and acoustic signals containing the encoded geo-location to a receiving station. A locator for locating an underwater based system including a buoy, a global positioning system having an antenna and a receiver, an RF transmission system including an antenna and a transmitter, an underwater acoustic transducer, and a locator control unit adapted to determine the underwater based system's geo-location, encode the underwater based system's geo-location for RF transmission, encode the underwater based system's geo-location for acoustic transmission, and transmit RF and underwater acoustic signals containing the encoded geo-location.

Disclosed herein is a floating recovery device for underwater equipment. The device includes a recovery body partitioned into a first compartment, a second compartment, and a third compartment by a partition wall, first and second pressure tanks installed in the first and second compartments, respectively, first and second striking parts fastened to the first and second pressure tanks, respectively, to strike the first and second pressure tanks, first and second actuators wirelessly actuating the first and second striking parts, respectively, and a buoyancy generator installed in the third compartment, and inflated by high-pressure gas introduced from the first and second pressure tanks, thus generating buoyancy. Such a configuration allows the pressure tank to be wirelessly struck for the purpose of supplying high-pressure gas to the buoyancy generator and floating the underwater equipment in the event of the loss of the underwater equipment.