The Vahklas-class was a type of Vulcan transport used in the early 22nd century. The Vahklas sported distinctive curving warp nacelles - a design feature which would eventually progress into the full ring structure of later Vulcan vessels.

By the midpoint of the century the Vahklas-class was considered obsolete, though a handful of ships remained in use by civilians. However, by 2154 a number of Vahklas-class vessels had been refitted and reactivated by the Vulcan High Command. Some of these modified cruisers took part in the Battle of Andoria.

After the Vulcans joined the Federation, these ships were not donated to Starfleet, as Starfleet Command had hoped, but were rather retained by the Vulcan High Command. While these and other Vulcan ships would support Starfleet whenever requested, the Vulcans were still unsure of how wise it was to rely entirely on the Human-led Federation. Decades later, when the Vulcan High Command finally made the decision to dismantle their fleet, and rely entirely on Starfleet (aside from privately operated Vulcan ships), advances in Federation technology meant that the Vahklas was mothballed.