Abstract: One or more portions of a streamer or other equipment of a seismic survey system (e.g., birds, buoys, deflectors, etc.) are covered with protective removable skin sections. A protective removable skin section includes a flexible sheet and a reversible closure system configured to join edges of the flexible sheet. The protective removable skin section may be mounted onboard of a vessel, when the equipment is deployed.

Abstract: Embodiments describe methods, devices and systems for marine seismic surveying which prevent or inhibit marine growth thereon. Towed seismic array elements which can become fouled given their presence in the water for extended time periods are coated with a hydrophobic coating, e.g., a superhydrophobic nanocoating applied manually via an aerosol can or brush. Application of the hydrophobic coating can be performed on board the towing vessel, or even potentially in the water.

Abstract: Various methods preserve or restore the low roughness throughout an outer shell of a device (e.g., a streamer) used underwater for seismic surveys, by applying various substances that fill micro-cracks, are easy to polish or are self-healing. Apparatuses used to implement these methods may be used shortly before the devices are deployed in water, for example, having the device passing through such an apparatus as it is moved to be deployed in water.

Abstract: A streamer usable underwater for a marine seismic survey has a portion adjacent to a protuberance covered by an adhesive antifouling tape or substrate. The tape, which may be made of copper or copper alloy is configured to be fast fastened, may be applied when the streamer is deployed and may be covered by a protective jacket during recovery.

Abstract: A method and a marine front-end gear for connecting a set of streamers to a towing vessel. The front-end gear includes ropes for connecting a first sub-set of streamers to the vessel; lead-ins for connecting a second sub-set of streamers to the vessel; and a back loop cable electrically connected between tails of first and second adjacent streamers. The first streamer belongs to the first sub-set of streamers and the second streamer belongs to the second sub-set of streamers, and streamers of the first sub-set are interspersed with streamers of the second sub-set.

Abstract: A streamer usable underwater for marine seismic surveys is covered by a removable skin to prevent bio-fouling deposits on its outer surface. The removable skin includes a flexible material charged with a biocide substance or has foul release properties, and a closure system configured to join sides of the flexible material. The removable skin may be mounted onboard of a vessel, while the streamer is deployed.

Abstract: Method and device for cleaning a marine seismic equipment. The device includes a body, a propulsion system for moving along the streamer, a cleaning device for cleaning the equipment, and a control device for controlling a movement of the device.

Abstract: Method and cleaning device for cleaning a seismic streamer. The cleaning device includes a flexible body having a shape that wraps around a longitudinal axis; a movement-generating device attached to an end portion of the flexible body; and first cleaning elements provided on a first portion of the flexible body and configured to clean the seismic streamer. The flexible body is configured to wrap around the seismic streamer.