Quite likely. I'd say it's at present beyond our comprehension. A big enough cruise ship, accelerating fast enough, could cause a tsunami but it'd be far beyon

Quite likely. I'd say it's at present beyond our comprehension. A big enough cruise ship, accelerating fast enough, could cause a tsunami but it'd be far beyond anything we could reason about sensibly. If they control that much energy, maybe it's waves from their equivalent of a microwave oven.