COUPLING DEVICE FOR RECOVERING UNMANNED SHIP AND COUPLING CONTROL METHOD USING SAME

The present invention relates to a coupling device for recovering an unmanned ship and a coupling control method using the same, the coupling device comprising: a coupling unit, which is lifted and lowered by being connected to a crane provided in a mother ship, and is formed to be long such that one side thereof selectively protrudes expansively along the circumference thereof; an accommodation unit provided in the unmanned ship, and having a vertically communicating coupling hole such that at least a portion of the coupling unit is inserted therein; a guide unit performing guiding such that the coupling unit is coupled to the accommodation unit, and including a towing line formed to be long so as to be coupled to the coupling unit in a state in which one side thereof passes through the coupling hole, and a winch connected to the other side of the towing line so as to selectively wind or unwind the towing line; and a control unit including a sensing part for sensing the tension applied to the towing line by the driving of the winch, and a control part for lowering the coupling unit connected to the crane, if the intensity of the tension sensed by the sensing part is a preset value or higher, wherein the control part lowers the coupling unit in correspondence to the length of the towing line wound by the winch, when the coupling unit is lowered, such that the coupling unit is coupled to the accommodation unit.