Inter-array cable (IAC) assemblies, systems, and methods are disclosed in which a conductive cable between two floating platforms, e.g., floating wind turbine platforms, is suspended below the sea surface and above the seabed. One or more buoyancy sections are included in the cable, which reduces the static tension on the connection at the floating platform by reducing the suspended cable weight, and which provides geometric flexibility, allowing the IAC to comply with platform motions.

The invention provides a system for subsea pressure booster HV (high voltage), MV (medium voltage) and LV (low voltage) power supply and distribution. The system is distinguished in that the system consists of, essentially consists of or comprises: a supply cable without a connected variable speed drive/variable frequency drive (VSD, VFD); at least one subsea pressure booster, and; one subsea direct online switch (SDOS) for each subsea pressure booster, wherein the supply cable at a source end is coupled to an AC power source at a topside, onshore or subsea location, wherein the supply cable at a pressure booster end is coupled directly or via a distribution device to at least one subsea direct online switch, SDOS, wherein each SDOS is coupled to one subsea pressure booster. Method of operation and use of the system.

The invention provides a system for subsea pressure booster HV (high voltage), MV (medium voltage) and LV (low voltage) power supply and distribution. The system is distinguished in that the system consists of, essentially consists of or comprises: a supply cable without a connected variable speed drive/variable frequency drive (VSD, VFD); at least one subsea pressure booster, and; one subsea direct online switch (SDOS) for each subsea pressure booster, wherein the supply cable at a source end is coupled to an AC power source at a topside, onshore or subsea location, wherein the supply cable at a pressure booster end is coupled directly or via a distribution device to at least one subsea direct online switch, SDOS, wherein each SDOS is coupled to one subsea pressure booster. Method of operation and use of the system.

The invention relates to a device for guiding a cable for linking a submerged robot, in particular a robot for cleaning swimming pools, to the device for controlling and powering same, said guiding device comprising: a. a coupling including a rotary connector, connected by one side to a first floating portion of the linking cable extending from the control and power device to said coupling and, by the other side, to a second portion of the linking cable extending from said coupling to the submerged robot; b. a floating mounting including: bi. a float; bii. an interface for mechanically linking the rotary connector to said float; and biii. a hood extending above the surface when the floating mounting is submerged in a liquid and removably connected to the float; c. in which the mechanical link between the float and the rotary coupling is a ball-and-socket link.

The invention relates to a device for guiding a cable for linking a submerged robot, in particular a robot for cleaning swimming pools, to the device for controlling and powering same, said guiding device comprising: a. a coupling including a rotary connector, connected by one side to a first floating portion of the linking cable extending from the control and power device to said coupling and, by the other side, to a second portion of the linking cable extending from said coupling to the submerged robot; b. a floating mounting including: bi. a float; bii. an interface for mechanically linking the rotary connector to said float; and biii. a hood extending above the surface when the floating mounting is submerged in a liquid and removably connected to the float; c. in which the mechanical link between the float and the rotary coupling is a ball-and-socket link.

Provided is a cable hang-off arrangement configured for mounting at the level of an elevated platform of an offshore facility and includes a pipe configured to accommodate a number of protective tubes, wherein a protective tube is configured to accommodate a transmission cable of the offshore facility; a tube end flange arranged around an end portion of each protective tube; and a hang-off terminator configured for mounting at an end of the pipe, which hang-off terminator includes an end-plate with a number of apertures for the transmission cables, and a flange connection interface for connecting to the tube end flanges. An offshore facility, and a method of securing a transmission cable arrangement at the level of an elevated platform of an offshore facility are also provided.

Ocean floating installations (1) are disposed on the ocean. The ocean floating installations (1) float on the ocean with the lower part of the ocean floating installations (1) being fixed to the seabed by mooring ropes (11). Each of the ocean floating installations (1) is connected at a connection part (5a) to a cable (3), which is a first cable. Each of the cables (3) is connected at a connection part (5b) to a cable (7), which is a second cable. In other words, the ocean floating installations (1) are connected to each other by the cables (3) and the cable (7). A connection is established with the cables (7) at the connection parts (5b) located on the seabed. In other words, the cables (7) are installed on the seabed.

Ocean floating installations (1) are disposed on the ocean. The ocean floating installations (1) float on the ocean with the lower part of the ocean floating installations (1) being fixed to the seabed by mooring ropes (11). Each of the ocean floating installations (1) is connected at a connection part (5a) to a cable (3), which is a first cable. Each of the cables (3) is connected at a connection part (5b) to a cable (7), which is a second cable. In other words, the ocean floating installations (1) are connected to each other by the cables (3) and the cable (7). A connection is established with the cables (7) at the connection parts (5b) located on the seabed. In other words, the cables (7) are installed on the seabed.

A protection assembly for mounting in an underwater support structure includes at least one bend protection device coupled to a retaining device so that together they provide a through-going passage for receiving an elongate member which is to be protected. The elongate member passes through a support structure opening, and the retaining device is configured to be received in the support structure opening and to engage with the support structure to resist subsequent withdrawal from it. Installation of the protection assembly includes grasping the protection assembly with a releasable clamp, arranging a pulling line to pass through the support structure opening to the mechanical clamp and securing the pulling line to the mechanical clamp, drawing the retaining device of the protection assembly into the support structure opening using the pulling line and engaging the retaining device with the support structure, and releasing the clamp from the protection assembly.

A method for protecting a novel anti-drop submarine cable includes: assembling a traction assembly, a standard bending protection section and a protection reinforcement section sequentially to form a submarine-cable-protection device, and a submarine cable passing through it; connecting a traction rope of the traction assembly to a reserved traction rope pre-buried in a single pile foundation, and enabling the submarine cable and the submarine-cable-protection device by a traction device passing through a reserved hole of the foundation; moving the assembled sets forward until the traction rope is lifted and unmovable, enabling a retaining ring of the protection reinforcement section to abut against the reserved hole, installing the traction rope on the foundation by shackles; pulling the reserved traction rope to a proper length, fixing the submarine cable to installation base. The safety is ensured by avoiding dropping of the submarine-cable-protection device, and ensures the overbending protection of the submarine cable.