http://birth-of-the-empires.de/wiki/ind ... Reichweite
Speed
http://birth-of-the-empires.de/wiki/ind ... windigkeit
Special tech can confer a boost so this is vital as it's the sole way to exceed speed beyond 4 sectors per turn.
http://birth-of-the-empires.de/wiki/ind ... techs.data
Vital. You want to boost speed because then your major alien race can exceed the speed of 4/sectors per turn.General Starship Technology
Our borders continue to steadily expand, making the efficient control and distribution of supplies ever more vital. In order to guarantee supplies are distributed evenly throughout our entire territory, continuous developments in production and engine efficiency are vital. These improvements can then be applied to both civilian and military interests, once approved by the appropriate authorities.
Increased Range
Increased Speed
-10% Ship Production Costs
Research
Area of focus: propulsion research affects speed.
http://birth-of-the-empires.de/wiki/ind ... =Forschung