The, uhm, electronics are a bit exposed to the weather, waves, wind, and what-knot, aren't they. Not a practical manned rig for anything.
Could be a floating "buoy" for weather or a science platform suspending gear below the surface.
Navy-gray?
Yah, but you have to like the Airstream Vacation home epoxied to those arched struts. I would feel somewhat nervous about riding this thing in high seas without additional cross bracing of those arches Looks to be like they would collapse in the first high sea.