Explain how ROVs are used to repair subsea cables connected to a WEC array.

Remotely Operated Vehicles (ROVs) play a crucial role in repairing subsea cables connected to a Wave Energy Converter (WEC) array. When a cable fault occurs, the ROV is first deployed to visually inspect the cable and identify the location and nature of the damage. Equipped with cameras and sonar, the ROV can transmit real-time video and data to the surface support vessel, allowing technicians to assess the situation. Once the damage is assessed, the ROV is used to perform several repair tasks. This often begins with clearing debris or marine growth around the damaged area using hydraulic cutters or water jets. The ROV then prepares the cable ends for splicing by carefully cutting and stripping back the outer layers of insulation. Specialized ROVs are equipped with cable splicing tools that allow them to connect the cable ends together using mechanical connectors or by performing a fusion splice. The ROV can also install protective sleeves or wraps around the splice to provide insulation and mechanical protection. After the repair is complete, the ROV is used to bury the cable in the seabed to protect it from further damage from anchors or fishing gear. This is typically done using a jetting tool or a trenching tool attached to the ROV. Throughout the repair process, the ROV is remotely controlled by technicians on the surface vessel, who monitor the video and data transmitted by the ROV and provide instructions to the ROV pilot. The ROV's ability to perform these tasks remotely and in deep water makes it an essential tool for maintaining the integrity of subsea cables connected to WEC arrays.