I don't exactly remember when it was, I guess around 2005 or before. In a timespan from about 6 months multiple undersee cables had been 'hit by a ship' (pre Snowden, everybody believed the story). One cable was pretty bad, so traffic to asia was almost complet broken for a few days.

I remember this panic. I, and many others, actually learned at that time that anchors damaging undersea cables are actually a common occurrence.