Acceptable Motion

In designing seasteads we need to understand what amount of motion is acceptable.

The basic problem is that your brain is used to being able to tell what vertical is by looking at buildings and things, but on a ship it is not so simple. The conflict between visual cues, your inner ear, and the motion your body feels causes the trouble.

There have been studies working out formulas for what amount of motion causes sea sickness.

In general it seems that after a few hours to a few days people develop "sea legs" and are adapted.