The various construction tasks would take months, so I flew back to the third planet with a couple of exploration drones to look around. I started with a deep scan of the ocean. And got my money’s worth. I had to retune three times before I was able to detect ocean bottom. Eight hundred kilometers deep. That was just nuts. I’d had some thought of artificial islands, but unless there was a Mount Lookitthat down there somewhere, there wasn’t going to be anything close enough to anchor to or build up.