Kabelbrott är mycket vanligt förekommande inte bara i Östersjön utan även vid andra kuster runtom i världen,
Här en artikel om kabelbrotten vid USAs kuster;
TeleGeography researcher Tim Stronge says a cable break happens so often, about twice a week, that it's "a ho-hum event" — but an expensive one.
"They break so frequently, there's a whole mini-industry dedicated to repairing them," he told CBC News, speaking from Washington, D.C. Fleets of ships and their crews are kept on standby, dedicated exclusively to repairing undersea fibre optic cables.
"The industry as a whole is well-equipped to handle cable failures," Stronge says.
About two-thirds of the breaks are caused by anchors or fishing trawlers, the rest mostly by undersea earthquakes and volcanoes and other natural events. The tsunami that hit Japan in 2011 broke about half the cables connecting the country."
källa;
https://www.cbc.ca/news/science/submarine-cables-explainer-1.3289954