The invention relates to an umbilical comprising a plurality of functional elements for providing hydraulic, electrical, signal and chemical functionality thereof, wherein at least some of the said functional elements comprise a fibrous sheath containing high strength polyolefin fibers.

A cable, which may be produced by the method described herein, comprises a cable with a core jacket comprising a predetermined cable length where the core jacket comprises a thermoplastic material comprising a memory characteristic which changes based on temperature, a set of core components, disposed within the core jacket, which comprise the predetermined length, and a strength member disposed within the core jacket intermediate the core components and the core jacket. The strength member comprises a selectively activated pre-impregnated uncured synthetic material adapted to be cured while in production, the strength member comprising a length substantially equal to the predetermined length.

A submarine power cable system including: a first cable section in the form of a dynamic submarine power cable, and a second cable section jointed with the first cable section, the second cable section being a static submarine power cable, wherein the first cable section has a first cable section first power core including a first cable section first insulation system, a first cable section first metal sheath covering the first cable section first insulation system, and a first electrically insulating sheath provided around the first cable section first metal sheath, wherein the second cable section has a second cable section first power core jointed with the first cable section first power core, wherein the second cable section first power core includes a second cable section first insulation system, a second cable section first metal sheath covering the second cable section first insulation system, and a first semiconducting sheath provided around the second cable section first metal sheath, and wherein the first cable section first metal sheath and the second cable section first metal sheath are electrically connected to each other, thereby providing a ground point of the first cable section first metal sheath, and wherein the first cable section is shorter than the second cable section.

Disclosed is a non-steel high strength data transmission cable having a strength member (5) and a core (1). The high strength data transmission cable includes a length of a core-cable (10), the length of core-cable (10) includes core (1) plus at least one fiber-optic conductor (2) that is: (i) disposed in a helical shape; and (ii) completely encased in a solid, flexible material. Also disclosed is a process for making a high strength data transmission cable. The high strength data transmission cable is capable of being wound on a winch under tensions and surging shocks experienced by a fishing trawler, and provides high quality data signal transmission and resolution so as to permit use for transmitting data during fish trawl operation from high-resolution sonars used to monitor fish caught.

A metal sheathed cable includes an optical unit and a control unit helically twisted together, a grounding wire unit distributed in the gaps between the optical unit and the control unit to form an inner layer cable core, a filler watertightly filled into gaps among the optical unit, the control unit and the grounding wire unit, and a taped covering arranged outside the inner layer cable core; a power unit and a filling core helically twisted around the inner layer cable core, the grounding wire unit distributed in the gap between the power unit and the filling core, the filler watertightly filled into gaps among the power unit, the grounding wire unit and the filling core, and the taped covering arranged outside the outer layer cable core; an inner protective layer wrapped outside the outer layer core, and a sheathing layer twisted outside the inner protective layer.

An umbilical for use in the offshore production of hydrocarbons, the umbilical comprising a plurality of functional elements contained within an outer sheath, at least one of said functional elements comprising a multicore electric cable, said multicore electric cable comprising a plurality of insulated electric conductors electrically insulated from each other and assembled together in a helical or S/Z manner, said multicore electric cable further comprising a protective polymer sheath surrounding said plurality of insulated electric conductors, said multicore electric cable further comprising a tubular metallic layer located inside said protective polymer sheath and surrounding said plurality of insulated electric conductors.

A production method for a headline sonar cable characterized by steps of: a. providing a first strength member (14); b. coupling to strength member (14) a conductor (122); c. forming a layer of polymeric material about the combination of strength member (14) and conductor (122) while ensuring that the conductor remains slack; d. forming a flow shield around the layer of polymeric material, thus forming an elongatable internally located conductive structure; and e. braiding a strength-member jacket layer (52) of polymeric material around the elongatable internally located conductive, structure while ensuring that the conductor is slack when surrounded by the jacket layer (52). For another embodiment, an optical fibre is wrapped around the exterior of the layer of polymeric material within which is enclosed a braided conductor formed about the first strength member (14). Other embodiments employ further thermo-plastic layers and further sheaths and further conductors.

A method and apparatus for simultaneously transmitting power and transporting at least one fluid, and a method of manufacturing a pipe-power cable assembly, an offshore energy hub, and a method of installing a pipe member and an elongate flexible element at a desired location are disclosed. The apparatus comprises a pipe member comprising a fluid retaining liner that defines a bore of the pipe member; and at least one elongate flexible element comprising an outer sleeve and at least one electrically conducting element disposed within the outer sleeve; wherein the elongate flexible element is wound around the outer surface along at least a portion of the pipe member.

A system for transmission of power offshore comprises two or more power stations operably connected with a high voltage cable system. The high voltage cable system may comprise a dynamic, dry or wet type high voltage submarine cable of varying length configured to transmit at least about 100 megawatts of power. In some cases the dynamic, dry or wet type high voltage submarine cable comprises a first end connected to an offshore power station and second end connected to a static submarine cable system which is connected to an onshore power station. The systems may facilitate transmission of power for applications such as compressing and/or pumping subsea natural gas in deep water.