Seismic cables

摘要

An apparatus and method are disclosed for retaining a seismic cable connector module (24) to permit in-water repair of seismic cables. A clamp (19) is supported by a vessel (10) positioned over the submerged seismic cable (26). The seismic cable (26) is raised above the water surface, and the clamp (19) is attached to the exterior surface of the connector module (24). The clamp (19) can include a lock for securing the connector module, and a swivel between the clamp and the vessel can permit movement of the connector module relative to the vessel (10) as the vessel (10) heaves due to wind and wave action. The clamp (19) can release the connector module (24) if the environmental forces acting on the connector module exceed a selected amount. The clamp (19) can be attached to a separate vessel for in-water use or can be attached to the vessel deck.