Process for manufacturing a power cable includes: providing a power cable core having an electric conductor; providing a copper foil; providing a protective strip over the power cable core, the protective strip having a radially inner and outer surface and being made of copper with a coating; folding the copper foil around the power cable core so as to bring two longitudinal copper foil rims to contact one to the other; welding the two contacted longitudinal copper foil rims thus obtaining a copper sheath in form of a tube with a welding seam; reducing the diameter of the copper sheath to put it into direct contact with the power cable core and the protective strip; heating the protective strip and the copper sheath at a temperature higher than the melting temperature of the coating of the strip so that the coating fuses in the welding seam.

An umbilical for subsea applications has at least one longitudinal internal element and a sheath, the sheath is formed by extrusion. The internal element is suitable for communicating fluids, electrical power or signals, or for carrying loads. The sheath is made of a polymer composite having a high density filler, the polymer composite having a density in the range 3 to 11 g/cm3.

An offshore system including: a dynamic submarine power cable, a bend stiffener having a lower end and a top end, the bend stiffener having a central channel extending from the lower end to the top end, the central channel receiving the dynamic submarine power cable with a radial spacing between an inner surface of the central channel and an outer surface of the dynamic submarine power cable along the length of the dynamic submarine power cable arranged in the bend stiffener, the radial spacing forming a longitudinal channel between the bend stiffener and the dynamic submarine power cable, and a fluid flow device configured to generate a fluid flow inside the longitudinal channel.

A method for manufacturing an electrical cable includes providing at least one core including an electrical conductor, and arranging at least one copper sheath around the at least one core. The arranging of the copper sheath includes providing at least one foil of copper having two opposite first edges; bending the foil of copper around the core until the first edges of the foil of copper are contacted with each other; welding the first edges of the foil of copper to each other to form a corresponding solder jointwelded joint; and deposing a copper coating on at least portions of the surface of the foil of copper at the welded joint. The deposing the copper coating is carried out by means of a thermal spray process.

The invention concerns a subsea umbilical comprising an electrical conductor (2) and/or a fluid pipe, and an outer sheath (7) surrounding the electrical conductor (2) and/or the fluid pipe. The umbilical (1, 20, 21, 25, 30, 40, 51, 60) further comprising a plurality of deformable rods (3a, 3b, 15, 23a, 23b, 26a, 27a, 26b) evenly distributed between the electrical conductor (2) and/or the fluid pipe, and the outer sheath (7) for radial load protection of said electrical conductor (2) or fluid pipe.

A subsea direct electric heating system has a subsea pipeline which has an electrically conducting pipeline material, and a first piggyback cable extending along a portion of the subsea pipeline, electrically connected in series with the subsea pipeline. The system further comprises a topside AC power supply and a power feeder cable which extends from the topside AC power supply to a subsea location. The power feeder cable feeds electric power to the first piggyback cable and the pipeline, resulting in a heating of the pipeline. In order to improve power conditions in the system, the arrangement for reducing the reactive component of the power comprises the power feeder cable, the power feeder cable having a distributed capacitance which is sufficient, in the absence of a capacitor, to result in a power factor of an electric circuit comprising the power feeder cable, the subsea pipeline and the piggyback cable in the range 0.9 to 1.0.

Methods and apparatus are disclosed. The apparatus includes a substantially cylindrical mount body (350) comprising a first open mouth at a first end of the cylindrical body (350) and a further open mouth at a remaining end of the cylindrical body, a substantially cylindrical inner surface, and an outer surface that includes a plurality of spaced apart substantially parallel recessed regions that extends circumferentially around the body, wherein the cylindrical body (350) is tapered at each end and at least one securing element is located between the recessed regions.

flexible pipe body and a method of providing electrical continuity are disclosed. The flexible pipe body comprises a first armour layer formed from a helical winding of a metal tape element, a further armour layer formed from a helical winding of a further metal tape element, and at least one intermediate layer between the first and further armour layers, said intermediate layer comprising a helically wound electrically insulating tape element (800.sub.0, 800.sub.1, 800.sub.2, 800.sub.3, 800.sub.4) and a helically wound electrically conductive tape element (810.sub.0, 810.sub.1, 810.sub.2, 810.sub.3, 810.sub.4).

A subsea umbilical comprising a plurality of longitudinal strength members, wherein at least one longitudinal strength member is a steel longitudinal strength member and has a semi-conductive coating. The invention can be used both in static, deepwater applications when substantial loading is to be applied to the umbilical, and in dynamic applications when the umbilical is too light and ballast is needed.

An underwater camera assembly is configured to be dragged behind a boat underwater. The camera assembly includes a housing having a hollow interior that is configured to hold a camera in waterproof manner. The camera assembly includes at least one rail disposed along an outer surface of the housing and being configured to slidingly receive and interlockingly engage a first accessory (camera positioning fin). The camera assembly can further include a second accessory (trolling fin) that is also interlockingly, yet releasably, engaged to the housing.