A Rigelian border frigate was a starship in use by the Rigelian people either during or prior to the mid 23rd century, characterized by its squat, boxy shape, and by a series of distinctive marks on their hulls. A Rigelian border frigate was among the many vessels found stranded in an interdimensional rift in the Delta Triangle region by the USS Lovell in 2269. (SCE eBook: Where Time Stands Still)

It is not clear which of the different groups identified as Rigelians this vessel would have belonged to.