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: A water-fillable fairing configured to be mounted on a cable has a fairing body and an inlet. The fairing body is at least partially made of a flexible material, and is able to hold water at a higher pressure than an average pressure outside the fairing body, while the cable is towed. The inlet, which is located on a front part of the fairing body in the towing direction, is configured to allow water to enter the fairing body when the cable is towed.

Abstract: Method and seismic data acquisition system includes a streamer spread including (i) a streamer having receivers for recording seismic data and (ii) a connecting cable connecting the streamer to a towing vessel; a collar device configured to move along the connecting cable, between the towing vessel and the streamer; and a remotely operated vehicle (ROV) attached to the collar device with an umbilical and configured to carry an interchangeable payload.

Abstract: A biofouling removal mechanism includes at least one cleaning element configured to remove accumulated biofouling from a structure and a cleaning element support structure attached to the cleaning element. The cleaning element support structure is configured to secure the cleaning element to the structure, to guide the cleaning element along the structure and to accommodate changes in at least one of a size and a shape of the structure as the cleaning element passes along the structure.

Abstract: Covers and methods to protect outer surfaces of marine equipment are provided. The covers are manufactured to extend along at least one dimension. The covers may have antifouling properties due to the thread used to manufacture the covers or due to treatment applied to the covers after manufacturing. The covers are removably mounted on one or more pieces of marine survey equipment, without employing fastening mechanisms.

Abstract: A cleaning device for cleaning a marine element towed in water and related methods are provided. The cleaning device includes a body configured to enclose the marine element; at least one wing attached to the body and configured to impart translational and rotational motion to the body when interacting with the water; a switching and locking mechanism configured to change an orientation of the at least one wing between a first orientation and a second orientation when contacting a stopper and also to lock the selected orientation; rotating means attached to an internal surface of the body and configured to contact the marine element, the rotating means having axles that make a fix angle with a longitudinal axis of the body; and a cleaning tool attached to the body and configured to clean the marine element.

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: A method and a marine towing system for towing streamers or sources. The towing system includes a connecting line; a first paravane connected to the connecting line, wherein the connecting line is configured to connect the first paravane to a vessel; a spur line connected to the first paravane and configured to provide a tension to maintain streamers apart from each other; and a second paravane connected to the connecting line, between the first paravane and the vessel. The second paravane is configured to increase an angle (?4) between the connecting line and the spur line.

Abstract: A cleaning device for cleaning a marine element towed in water and related methods are provided. The cleaning device is configured to follow a bypass rail attached to the marine element when an obstacle is encountered along the marine element. Thus, the cleaning device passes the entire marine element, from one end to the other, irrespective of the nature of the obstacle. The cleaning device includes a cleaning unit for cleaning the marine element.

Abstract: A cleaning device for cleaning a marine element towed in water and related methods are provided. The cleaning device includes a body configured to enclose the marine element; at least one wing attached to the body and configured to impart translational and rotational motion to the body when interacting with the water; a switching and locking mechanism configured to change an orientation of the at least one wing between a first orientation and a second orientation when contacting a stopper and also to lock the selected orientation; rotating means attached to an internal surface of the body and configured to contact the marine element, the rotating means having axles that make a fix angle with a longitudinal axis of the body; and a cleaning tool attached to the body and configured to clean the marine element.

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: 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.