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.

A submarine power cable bundle including: a first bottom direct current, DC, submarine power cable, a second bottom DC submarine power cable, and a top DC submarine power cable, wherein the first bottom DC submarine power cable and the second bottom DC submarine power cable are bundled together by means of a first elongated bundling element, forming a first bundle, wherein the first bundle is bundled together with the top DC submarine power cable by means of a second elongated bundling element, forming a trefoil configuration, wherein the first elongated bundling element bundles the first bundle tighter than the second elongated bundling element bundles the first bundle and the top DC submarine power cable.

A submarine power cable bundle including: a first bottom direct current, DC, submarine power cable, a second bottom DC submarine power cable, and a top DC submarine power cable, wherein the first bottom DC submarine power cable and the second bottom DC submarine power cable are bundled together by means of a first elongated bundling element, forming a first bundle, wherein the first bundle is bundled together with the top DC submarine power cable by means of a second elongated bundling element, forming a trefoil configuration, wherein the first elongated bundling element bundles the first bundle tighter than the second elongated bundling element bundles the first bundle and the top DC submarine power cable.

Aggregated, submarine cable system information is securely stored, accessed and managed. Security is assured through the use of multi-factor authentication that is compliant with National Institutes of Standards And Technology and US. Government Defense Federal Acquisition Regulation requirements. Further, real-time audit logs are generated as end-users access controlled unclassified information.

Aggregated, submarine cable system information is securely stored, accessed and managed. Security is assured through the use of multi-factor authentication that is compliant with National Institutes of Standards And Technology and US. Government Defense Federal Acquisition Regulation requirements. Further, real-time audit logs are generated as end-users access controlled unclassified information.

Submersible transducer includes a transducer housing configured to be submerged within an aqueous liquid and a pressure sensor operable to obtain data for determining a pressure of the aqueous liquid. The pressure sensor may be disposed within the transducer housing. The submersible transducer also includes a submersible cable having an electrical conductor and a venting tube operably coupled to the pressure sensor. The pressure sensor uses an atmospheric pressure of an external environment that is detected through the venting tube to determine the pressure of the aqueous liquid. The submersible cable also includes a cable jacket and an inner layer that is surrounded by the cable jacket. The inner layer surrounds the electrical conductor and the venting tube. The inner layer includes a non-hygroscopic polymer that is more resistant to absorbing the aqueous liquid than the cable jacket.

A submarine power cable having: a plurality of elongated elements arranged in a stranded configuration, wherein at least two of the elongated elements are power cores, each power core including a conductor, an insulation system arranged around the conductor, and a polymeric sheath including a first polymeric material arranged around the insulation system, and a plurality of filler profiles including a second polymeric material, each filler profile being arranged in a respective interstice between two elongated elements of the plurality of elongated elements, wherein the first polymeric material and/or the second polymeric material includes a slip additive.

A submarine power cable having: a plurality of elongated elements arranged in a stranded configuration, wherein at least two of the elongated elements are power cores, each power core including a conductor, an insulation system arranged around the conductor, and a polymeric sheath including a first polymeric material arranged around the insulation system, and a plurality of filler profiles including a second polymeric material, each filler profile being arranged in a respective interstice between two elongated elements of the plurality of elongated elements, wherein the first polymeric material and/or the second polymeric material includes a slip additive.

A dynamic submarine power cable having: a conductor, an insulation system arranged around the conductor, wherein the insulation system includes an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer, and a metallic water blocking layer arranged around the insulation system, wherein the metallic water blocking layer is formed by a first section that is a corrugated metallic water blocking layer and a second section that is a smooth metallic water blocking layer.

A dynamic submarine power cable having: a conductor, an insulation system arranged around the conductor, wherein the insulation system includes an inner semiconducting layer arranged around the conductor, an insulation layer arranged around the inner semiconducting layer, and an outer semiconducting layer arranged around the insulation layer, and a metallic water blocking layer arranged around the insulation system, wherein the metallic water blocking layer is formed by a first section that is a corrugated metallic water blocking layer and a second section that is a smooth metallic water blocking layer.