For more details about towing, see Tow Conflict Resolution.

Tow_strength = Engine_contribution + Movement_contribution

Engine_contribution = Engine_tech^2 * Eff_engines
   * Warp_factor * TowStrengthEngineScale
Movement_contribution = Movement_distance
   * TowStrengthDistanceScale
  • Engine_tech is the tech-level of the engine (i.e. 10 for Transwarp Drives)
  • Eff_engines is the number of engines the ship has, times two if the ship has gravitonic engines, plus an additional 2 if the ship has a Level 2 Tractor beam.
  • Movement_distance is the distance this ship can move this turn. This is the distance to its waypoint, limited by the maximum movement distance according to its speed (e.g. 81 at warp 9 with normal engines), limited by available fuel. Note that this computation includes mass of the towee.