When a Vell-os has completed his or her basic training in the psi arts, one of the first things they attempt to construct is the delicate Dart. Like all Vell-os 'ships', she is actually a pure psychic barrier that protects the Vell-os pilot within. It is perfectly formed for hyperspace travel (nearly matching the beautiful Wraith), and will remain intact as long as enough of the mental energy of the Vell-os remains.