That explains why the piers are clogged with trashy little boats. But one of them still looks like a private marina. It's got a dozen or so clean white vessels, lined up neatly in their slips, no riffraff. And the resolution of this image is good enough that Hiro can see the pier speckled with little doughnuts: probably rings of sandbags. That'd be the only way to keep your private moorage private when the Raft was hovering offshore.