METHOD OF DISASSEMBLING OFFSHORE STRUCTURE AND FLOATING BODY APPARATUS

A method of disassembling an offshore structure includes a conveying step of conveying a floating body apparatus toward a tower provided in the offshore structure, an installing step of installing the floating body apparatus next to the tower, a collapsing step of cutting the tower and collapsing a main body of the offshore structure toward the floating body apparatus, and a collecting step of collecting the main body of the offshore structure. The floating body apparatus includes at least one column including a ballast tank, a plate member coupled to the at least one column underwater with the column installed offshore, and a support member that is coupled to the at least one column above seawater with the column installed offshore and is capable of supporting the main body of the offshore structure collapsed toward the floating body apparatus.