Abstract: A cladding section (100, 200) for mounting upon an elongate member to be deployed underwater is shaped to suppress vortex induced vibration of the elongate member when it is subject to a fluid flow, the cladding section comprising at least one cylindrical or part-cylindrical portion (130, 130?, 130?, 230) to seat upon the elongate member and at least one strake (114,114?, 114?, 214) upstanding from the part-cylindrical portion, the cladding section being characterised in that the strake is resilient, enabling it to be deformed when subject to load and to reform following removal of the load. The cladding section may be prepared by methods involving thermoforming or moulding.