Device and method for joining elements of underwater pipe for transporting fluids

A device for jointing elements of a pipeline for a transport of fluids, the device comprising:

• a support structure on which a pipeline section to be jointed to a pipeline element is intended to be mounted, the support structure arranged for connecting to a guide structure having two parallel fixed rails;
• four plates each comprising a first element arranged for cooperating with one of the two parallel fixed rails and a second element fixed on the support structure, the first element and the second element of each plate being linked together by a first cylinder aligned along a first adjustment axis perpendicular to a longitudinal axis of the pipeline section and a second cylinder aligned along a second adjustment axis perpendicular to the longitudinal axis of the pipeline section and to the first adjustment axis;
• and
• a system for controlling the cylinders of the plates to achieve movements along the first and the second adjustment axis and arranged to cooperate jointly with a set of cylinders for guiding in translation the support structure along the longitudinal axis of the pipeline section so as to allow jointing of the pipeline section and of the pipeline element.