We are working on possible seastead designs.

This is a kind of spar buoy, but one designed to be able to move through the water.
So it will be sort of a fat wing shape instead of the usual round spar.
It is also designed so the main spar fits inside a 40 foot container so we can ship it.
The wing will go diagonally in the container, so it can be 10 feet chord and 5 feet thick
and the wing about 39 feet long.

In normal operation the bottom 60% of the spar will be under water.
Along the underwater part there will be 4 RIM-drive thrusters spaced out along each side near the thick part of the wing.
By using differential thrust we can turn the spar left and right.
Buy using more thrust higher or lower we can help reduce pitch.

There will be 5 floors inside the spar for living space then above the spar will be an open platform with railing 20 feet by 20 feet
with solar above that extending out 30 feet by 30 feet, making sort of a shaded porch area for fishing or enjoying the view.
The bottom floor of the spar will have lots of batteries and other heavy stuff.  
The next floor up from the bottom will probably experience the lowest accelerations so can be for working or sleeping in heavy weather.

Please make a 3D WebGL scene using the above description of the wing-spar part halfway in water.