A floatable frame structure formed of several concatenated frame modules, wherein the frame module is formed of four columns arranged substantially vertically, four upper tie bars and four lower tie bars, and wherein neighbouring columns are interconnected in pairs by upper and lower tie bars and form module sections, and the connections between the tie bars and the columns are formed of rotary joints arranged at upper and lower nodes on the columns, there being at least one horizontal-rotation joint arranged for each column in the connection to an associated tie bar, and there being at least one spherical rotary joint or elastic rotary joint arranged for each tie bar in the connection to an associated column, each module section being provided with elastic tensile elements which are secured to diagonally opposite upper and lower nodes, nodes lying diagonally opposite each other in the same horizontal plane and in the same frame module being connected by elastic tensile elements, at least some columns forming containers with submersible portions with positive buoyancy, and adjacent frame modules sharing at least one column.
