I grew up on an island in the Baltic. Cable lines to main land snapped by anchor dragging was a surprisingly common occurrence. Other marine shenanigans include

I grew up on an island in the Baltic. Cable lines to main land snapped by anchor dragging was a surprisingly common occurrence. Other marine shenanigans included drunken sailors beaching their ships because they forgot to turn around the island. And ofcause a ton of illegal fishing. Your conclusion seems most likely in my book.