Unlike previously cut cables, which were mostly communication fiber cables, this particular one is a power cable and during the cut it was delivering 650MW at 4

Unlike previously cut cables, which were mostly communication fiber cables, this particular one is a power cable and during the cut it was delivering 650MW at 450kV [1] so almost 1450A of current. If it was cut by accident by an anchor I could imagine achor being damaged due to underwater plasma in the arc. In general this cable should also be of quite some diameter. It should be made of thick copper wires (delivering 1450A over 145km) and plenty of dielectric isolation (to separate high voltage of 450kV), the ship would be slowed down or turned if it was accidentally draging this cable behind. Edit: P.S. Googling for some more details I found some pictures [2] from the installation of Estlink 2 and it doesn’t look that thick, but still it is solid metal with rigid plastic insulations. 1. https://www.4coffshore.com/news/vital-eastlink-2-energy-link-repair-expected-by-12-september-nid30168.html https://www.4coffshore.com/news/vital-eastlink-2-energy-link... 2. https://group.merko.ee/en/project/installation-of-estlink-2-underground-cable/ https://group.merko.ee/en/project/installation-of-estlink-2-...