A suspension system receives an associated cable. The suspension system includes first and second mount arms disposed in spaced relation that receive a collar assembly having first and second collar members dimensioned to circumferentially enclose around the associated cable in a first assembled position, and a second open position, where the first and second collar members do not circumferentially enclose the associated cable. Sheave mount assemblies are provided along the interconnecting posts and various degrees of freedom are incorporated into the modular assembly.

A marine seismic sensor system includes a seismic node having at least one seismic sensor. The sensor is configured for sampling seismic energy when towed through a water column on a rope. The coupling can be adapted to modulate transmission of acceleration from the rope to the seismic node.

A system may include a message server. The system may include a telemetry unit in communication with the message server. The telemetry unit may be configured to discover an identification of an auxiliary device coupled thereto. The telemetry unit may be configured to report the identification to the message server. The telemetry unit may be configured to request the message server to send messages associated with the identification to the telemetry unit. The telemetry unit may be configured to forward the messages to the auxiliary device.

A seismic streamer includes an outer sheath that forms an interior region of the seismic streamer of which a portion is filled with a gel or liquid. The streamer also includes at least one stress member placed off-center in the interior region, and multiple sensors mounted proximate to a center of the interior region, where the sensors include a pressure sensor and a motion sensor. The streamer further includes multiple tilt sensors mounted along the interior region. A method of manufacturing a seismic streamer includes placing at least one stress member off-center along a first direction, mounting multiple spacers along the stress member, and affixing sensors to respective spacers, where the sensors include a pressure sensor and a motion sensor. The method further includes mounting tilt sensors along the first direction and affixing an outer sheath to the streamer that forms an interior region of the seismic streamer.

Coupling of geophysical sensor cable sections. At least some of the example embodiments are methods including coupling a first geophysical sensor cable section to a second geophysical sensor cable section. The coupling may be by: telescoping a first connector of the first geophysical sensor cable section into a second connector, the first connector comprising a male connector portion with external threads, and the second connector comprising a coupling ring with internal threads; abutting a first portion of a clam-shell gear against the coupling ring; closing the clam-shell gear such that a second portion of the clam-shell gear abuts the coupling ring, the clam-shell gear defining gear teeth on an outside diameter of the clam-shell gear; mating a pinion gear to the clam-shell gear; and turning the coupling ring relative to the male connector portion using of the pinion gear turning the clam-shell gear.

A marine deflector handling system includes a seismic survey vessel with a deflector towing sheave with a towing line to a seismic deflector bridle block. The bridle block includes, as counted from its outer end to its inner end: two triple head arms with each its triple head in their outer ends for fore and aft sets of bridle lines to a deflector, wherein said triple head arms in their inner ends are coupled together in a hinge bearing block which further holds an outer end of a grip adapter stem, wherein said grip adapter stem in its opposite, inner end is provided with a grip adapter axle block with a transverse through extending and protruding grip adapter axle arranged for being gripped by a crane jaw, wherein said grip adapter axle further holds an outer end of a sheave block stem with an inner end provided with a sheave block for said towing line.

Embodiments, including apparatuses, systems, and methods, for attaching autonomous seismic nodes directly to a deployment cable. The nodes may be attached to the deployment cable by a removable fastener or insert. The fastener may be a staple that surrounds the cable and rigidly couples to the node to securely fasten the cable to the node. The fastener may be secured into the node itself, a housing or enclosure surrounding the node, or into a receiver or mechanism attached to the node. Other fasteners besides a staple may include bands, wires, pins, straps, ties, clamps, and other similar devices that may be inserted around a portion of the deployment line and be removably coupled to the node. After retrieval of the node, the fastener may be removed and discarded.

Method and apparatus for marine seismic data collection and high resolution imaging is described. A marine seismic surveying flotilla is described for acquiring seismic data from both beneath an obstruction and in unobstructed water using a configuration of floating energy source vessels and a floating acquisition vessel towing an array of parallel seismic streamers. Different energy sources can be disposed on or towed by floating vessels that are not the floating acquisition vessel, with these energy sources maintained at a preset radius from a center of the array of parallel seismic streamers.

A front-end gear connects a streamer to a vessel. The front-end gear includes a lead-in that connects to the streamer, a first bend limiting element attached to the lead-in and to a float that floats at a sea surface, a second bend limiting element attached to the lead-in, a distance L away from the first bend limiting element, and a depressor attached to the second bend limiting element. The float generates a first force (F1) on the lead-in and the depressor generates a second force (F2) on the lead-in when the lead-in is towed underwater. The first and second forces act to apply a tension in a portion of the lead-in spanning the distance L, to reduce transversal noise propagation toward the streamer.

A cable-protecting device is used on a cable of a marine survey system to oppose cable bending and/or to limit a bending radius of the cable. The cable-protecting device has a functional body made of at least two portions configured to be clamped together to surround the cable, a gripping system configured to oppose the functional body sliding along the cable, and a closing system configured enable the at least two portions to engage fast and remain clamped.