We made a 1/6th scale model of a seastead design.  The black 2 barrels of 55 gallons each (always well above the water).
So together they are about 70 inches long and 23 inches in diameter and respresent the living area.
The pink legs are 8 inches in diameter and 4 feet long and average about half under water, so have
a small waterline area.   There is a scale appropriate Ken and Barbie onboard.

Here is video of the scale model tested in some waves:

https://www.youtube.com/watch?v=6g9JSNI3gXs

This video has been slowed by the Froude time scaling factor to try to show what it would look like in full scale.

Try to estimate the wave heights in the video and say what 6 times that would be for full scale.
Please try to analyze the experimental results of the video and tell me as much as you can about how the full scale
would move compared to a 50 foot catamaran or 60 foot mono-hull.  See if you can figure
out the accelerations and compare those to accelerations on those boats.