public CrewableList(ShipConstruct construct)
 {
     allCrewables     = Crewable.List(construct);
     commandCrewables = new List <Crewable>();
     foreach (Crewable crewable in allCrewables)
     {
         if (crewable.IsCommand)
         {
             commandCrewables.Add(crewable);
         }
     }
 }