Regional Cabled Array Primary Node PN1B Repair Completed. South cable line has been powered and PN1A, PN1C, and PN1D are now fully operational

Primary Node PN1B Repair: Onshore reconfiguration of the spare primary node and final power/communication tests were successfully completed on 9 July 2021. Submarine cable repair operations commenced August 2021 utilizing an industry cable repair/installation ship, with support from the R/V Thompson and remotely operated vehicle Jason. The faulty Primary Node PN1B was recovered onto the deck of the industry ship on 11 August. The faulty PN1B was removed from the system and jointing activities of the replacement PN1B were completed on 15 August. The south cable line was powered and optical continuity with all Primary Nodes (PN1A, PN1B, PN1C and PN1D) on the south cable line was confirmed. Unfortunately, during deployment of the replacement PN1B, the cable was damaged, which resulted in a shunt fault in the south cable line. Primary Node PN1B was removed from the system and Segments 2 and 3 were joined. The final bight was successfully deployed to the seafloor on 23 August 2021. The RCA south cable line has been powered and PN1A, PN1C, and PN1D are now fully operational. Southern Hydrate Ridge is currently offline until the replacement PN1B can be reinstalled in 2022.