Microsoft Planning Its First Irish Sea Cables - The SOBR2 Project
Microsoft has applied for several maritime usage licenses to do ship geophysical surveys of proposed routes for new subsea cables connecting Ireland to the UK. Its SOBR2 cable will connect Ireland to Wales as opposed to the usual Cornwall landings. It will apparently land at Malahide Beach or Portmarnock on the Irish side. Another possibility is a branch with a landing at both Malahide and Portmarnock. Details are very sparse on the cable itself. My educated guess would be a 96 pair unrepeatered cable because it minimizes capex while maximizing bandwidth punch with such systems easily pushing a couple petabits per second. The site survey will focus on the top three meters of the sea floor. It will take samples to ascertain the texture and composition of material with an eye towards a deep burial of the cable itself if possible. The samples will help determine not only burial depth but also how well armoured the cable will be. The Irish Sea is notorious for fibre cuts due to trawler fis...