Method and system for installing underwater structures

Abstract

This system enables the safe remote operation of installing underwater structures at target locations and in target orientations. [Solution] A method for installing an underwater structure 50 (anchor body for mooring wind power generation equipment) at a target position and in a target orientation, comprising: a lifting step of suspending the underwater structure 50 above the target position by a crane 22; an adjustment step of adjusting the orientation of the underwater structure 50 toward the target orientation by remotely operating a remotely controllable ROV 30 with a remote control device 34 on a work vessel 20 and moving the ROV 30; and a lowering step of lowering the structure 50, whose orientation has been adjusted, to the height of the target position by the crane 22.

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