If the coast guard was a thing, they'd be near land and checking turtle poaching, but 100km out from land (inside black border on map) is a bit too far.
I don't wanna get into this battle, but I do want to say that if u we're like 100km from land, that's technically AFKing cop hours, as he not really doing anything but staying in the water and probably laughing ur asses off.
once again, this is only my opinion.