A multi-phase submarine power cable including: a plurality of power cores arranged in a stranded configuration, and a curvature sensor including: an elastic elongated member, and a plurality of Fibre Bragg Grating, FBG, fibres, each FBG fibre extending axially along the elongated member at a radial distance from the centre of the elongated member; wherein the elongated member extends between the stranded power cores along a central axis of the multi-phase submarine power cable.

A multi-phase submarine power cable including: a plurality of power cores arranged in a stranded configuration, and a curvature sensor including: an elastic elongated member, and a plurality of Fibre Bragg Grating, FBG, fibres, each FBG fibre extending axially along the elongated member at a radial distance from the centre of the elongated member; wherein the elongated member extends between the stranded power cores along a central axis of the multi-phase submarine power cable.

A rigid submarine power cable joint including: an outer casing having a first axial end face and a second axial end face at an opposite axial end of the outer casing relative to the first axial end face, wherein the first axial end face includes a single opening configured to receive a multi-core dynamic submarine power cable, and wherein the second axial end face includes two openings, each configured to receive a respective single core submarine power cable.

A rigid submarine power cable joint including: an outer casing having a first axial end face and a second axial end face at an opposite axial end of the outer casing relative to the first axial end face, wherein the first axial end face includes a single opening configured to receive a multi-core dynamic submarine power cable, and wherein the second axial end face includes two openings, each configured to receive a respective single core submarine power cable.

A class of electrical connectors are described along with methods of manufacturing the same. In one example embodiment, a method of assembling a connector includes extending a twisted pair through a slot in a seal plate; untwisting the twisted pair along a first distance; inserting first and second conductors of the twisted pair through first and second through holes of a seal carrier; coupling first and second electrical terminals to the first and second conductors; re-twisting the twisted pair along a portion of the first distance by rotating the seal carrier; and inserting the seal carrier into the slot of the seal plate.

A class of electrical connectors are described along with methods of manufacturing the same. In one example embodiment, a method of assembling a connector includes extending a twisted pair through a slot in a seal plate; untwisting the twisted pair along a first distance; inserting first and second conductors of the twisted pair through first and second through holes of a seal carrier; coupling first and second electrical terminals to the first and second conductors; re-twisting the twisted pair along a portion of the first distance by rotating the seal carrier; and inserting the seal carrier into the slot of the seal plate.

A submersible habitat 100 for the repair of subsea cable 11, the habitat comprising a cable maintenance environment 108 being suitable for receiving a portion of the subsea cable under repair 115 while the subsea cable 11 is submerged. The submersible habitat further comprising raising and/or lowering component 25 configured for raising and/or lowering the submersible habitat 100 relative to the subsea cable 11. The entire repair is carried out within the submersible habitat 100 without the requirement to transport any portion of the subsea cable 11 to the surface.

Armoured cable (10) comprising: a plurality of cores (12) stranded together according to a core stranding direction; an armour (16) surrounding the plurality of cores (12) and comprising a layer of metal wires (16a) helically wound around the cores (12) according to an armour winding direction; wherein the at least one of core stranding direction (21) and the armour winding direction (22) is recurrently reversed along the cable length L so that the armoured cable (10) comprises unilay sections (102) along the cable length where the core stranding direction (21) and the armour winding direction (22) are the same. The invention also relates to a method for improving the performances of the armoured cable (10) and to a method for manufacturing the armoured cable (10).

Armoured cable (10) comprising: a plurality of cores (12) stranded together according to a core stranding direction; an armour (16) surrounding the plurality of cores (12) and comprising a layer of metal wires (16a) helically wound around the cores (12) according to an armour winding direction; wherein the at least one of core stranding direction (21) and the armour winding direction (22) is recurrently reversed along the cable length L so that the armoured cable (10) comprises unilay sections (102) along the cable length where the core stranding direction (21) and the armour winding direction (22) are the same. The invention also relates to a method for improving the performances of the armoured cable (10) and to a method for manufacturing the armoured cable (10).

A method for fatigue-monitoring of a submarine cable during off-shore jointing or reparation includes: a) determining a plurality of curvature values concerning a curvature of the submarine cable at different points in time during the off-shore jointing or reparation, b) determining a plurality of strain ranges of the submarine cable based on the plurality of curvature values, and c) determining a fatigue damage of the submarine cable based on the plurality of strain ranges.