Abstract: The invention relates to the implementation of a fluid transportation pipe. In order to achieve this, the pipe is equipped with a ballasting system, and, along a laying axis, the pipe, thus equipped, is immersed in a fluid having movement, such as the sea. A ballast mass of the ballasting system then substantially causes at least this ballasting system to sink.

Abstract: The invention relates to an assembly that includes a pipe for transporting liquid, deformable between an internal circular cross-section and a flattened internal cross-section that can be null and that can be folded on itself longitudinally, and a device for installing the pipe. The device includes a rotating turret about which the pipe is wound and flattened, presentation means for presenting one opposite the other in a commonly conformed state, two pipe sections, assembly means for a water-tight link between said sections, optional tensioning means for transmitting an axial tension to the elongated pipe, and means for attaching ballast to the elongated pipe.

Abstract: The invention relates to the implementation of a fluid transportation pipe. In order to achieve this, the pipe is equipped with a ballasting system, and, along a laying axis, the pipe, thus equipped, is immersed in a fluid having movement, such as the sea. A ballast mass of the ballasting system then substantially causes at least this ballasting system to sink.

Abstract: The invention relates to an assembly that includes a pipe for transporting liquid, deformable between an internal circular cross-section and a flattened internal cross-section that can be null and that can be folded on itself longitudinally, and a device for installing the pipe. The device includes a rotating turret about which the pipe is wound and flattened, presentation means for presenting one opposite the other in a commonly conformed state, two pipe sections, assembly means for a water-tight link between said sections, optional tensioning means for transmitting an axial tension to the elongated pipe, and means for attaching ballast to the elongated pipe.