Tractor beam

Three Hatchet fighters tow Ranger 3 to their mothership, Draconia, by conjoining their tractor beams in a triangular formation (BR25: "Awakening").

A tractor beam is an energy-based field capable of repelling or moving objects.

Draconia employs the use of such a beam to retrieve Ranger 3, after three of the Draconian's Hatchet fighters tow the craft—by conjoining their ships' tractor beams in a triangular formation—into Draconia's range (BR25: "Awakening").