Mobility
Seasteads can be classified by three levels of mobility:
Fixed
Seasteads which are built on a fixed foundation (sealand), or anchored is a way that is part of the design (Tension Leg Platform). In general, these types of designs are considered neither practical (depth) nor desirable (Dynamic Geography)
Floating
Global position is kept either by virtue of geograpical location (gyre), or by means of anchoring. In case relocation is desired, specialized equipment (tugboats) are hired. Position relative to neighbors is best kept by means of connections between individual seasteads.
Propulsed
The seastead has its own propulsion systems. They should be at least powerful enough to maintain a time-averaged position, and powerful enough to avoid collisions with nearby seasteads. It should be noted that mobility on the water is subject to strong economies of scale Fuel consumption as function of size