PROBLEM TO BE SOLVED: To provide an aquaculture cage feeding system capable of a ship operator to remotely control a ship and feed it at a facility on land or the like. SOLUTION: A propeller propulsion unit 101 composed of a plurality of identification signs 908 arranged along the edge of a culture water area, a propeller of one feeding ship 900, and a rudder angle of each high lift rudder 102, 103 is controlled. A ship maneuvering unit 208, a joystick lever 302 for instructing the rudder angle of the radio control device 300, a monitor 304, an image control unit 305 for displaying a sashimi simulated image 902a and a marker simulated image 908a on the monitor 304, and a feeding operation unit 306. In response to the instruction of the feeding operation unit 306, the propeller rotates at a constant rotation speed in the forward direction, and the rudders of the high lift rudders 102 and 103 on both sides are combined to determine the direction of the thrust of the wake of the propeller. It is turned around, hovering its own ship in place to hold its current position, and the feeding device 903 of the feeding ship 900 starts feeding. [Selection diagram] FIG. 8
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