A Safer Escape to the Deep Ocean?
The vertical ship "Sea Orbiter" is supposedly designed as a research vessel to study ocean currents and climate effects.
But we all understand that unmanned submerged and floating platforms can do just as well to gather whatever research data is necessary. Clearly the Sea Orbiter is meant as a deep ocean escape platform -- but what is it escaping?
Zombies, of course. While zombies can survive almost indefinitely underwater without needing to breathe, they do have trouble with flotation in deep water. They can walk along the seabed, but cannot easily swim along the surface. Once your ship or seastead achieves ocean depths of over 100 metres, you are relatively safe from zombies.
The Sea Orbiter was designed to be self-sufficient in terms of energy production, and could house a number of families, as designed. By scaling up the size of the vertical ship, and altering a few features, it could be turned into a self-sufficient vertical floating city for tens of thousands of people.
A vertical ship that is highly mobile, wave resistant, and stable with 2/3 of its length submerged, offers a new paradigm for naval design of self-sufficient floating arcologies meant to stay afloat for long periods of time.
Any added anti-zombie protective measures should add only minimally to the total costs.