Abstract: A method of fabricating a maritime assembly comprising the steps of stabilizing a foundation raft alongside a quay, moving at least a part of an erect tower structure from the quay onto the foundation raft, securing the tower structure to the foundation raft, and floating the assembly so formed away from the quayside site. Additionally a particular method for fabricating a tower structure is described, and a particular foundation raft and a method of constructing such foundation raft are outlined. The method of the invention is not limited to particular method for fabricating the tower structure, or the particular foundation raft.

Abstract: A marine structure comprising a plurality of hollow vertical columns tied permanently together by bracing elements at their lower and upper portions with cross bracing elements within their lengths to form a rigid tower, the columns having hollow feet open at their lower ends to be sunk into a sea bed, an excavating mechanism inside the feet for excavating sea bed material. Each column of the structure is floatable in water and is provided with inlet through which ballast may be introduced to sink it vertically in the water.

Abstract: A maritime assembly incorporating a foundation raft for founding, or when founded, on a sea bed, and having venting means responsive to the movement of waves whereby pore pressure at at least one point beneath the raft is reduced with respect to the hydro-static pressure appropriate to the external depth of water below the mean level of water in which the raft is (to be) founded.