YAGS SciFi is all about spacecraft and travel between worlds, so having a system for defining spacecraft is important.

The statistics used are simplified from real world values to make the maths of designing craft easier. Mostly, this involves including all the constants in the basic statistics.

Thrust: How powerful a drive is, per displacement tonne. The higher this is, the faster a spacecraft can accelerate.

Impulse: How efficient a drive is. The higher this is, a spacecraft can accelerate for longer.

The Total Thrust is the thrust of the engines times their total mass.

The Acceleration is the Total Thrust divided by the Ship Mass, in m/s².