Ship Hulls

Space-based Hulls (Complete List)
Max Move category assumes no star, no Emergency Propulsion

General Purpose Hulls (Ship Construction)
Main line of Ships that have no special requirements. All are discovered via the Ship Construction Research line.

Specific-Use Ship Hulls
Specific-Use Ship Hulls can be found in multiple Technological categories, and have the requirement that you put at least 50% of a single type of Component into the Hull. The "Effective Space" category denotes how much space you have available after fulfilling requirements, one assuming Computer Control (Master Computer III, 20kt), the other using Crew

Base Hulls
All Base Hulls have -50% Maintenance Costs.

Unit Hulls
Units do note require Maintenance

Mine Hulls
Mines are completely undefectable by any sensors, preventing Level 5 scans from all forms of sensors, and the highest level of sensors you can get in vanilla Space Empires IV being Level 4.