The Yarahla was a Vulcan Maymora-class starship that was in service with the Vulcan High Command in the mid-22nd century. The vessel was commanded by Captain Tok.
A few years before 2151, Captain Jonathan Archer once assisted in the installation of a graviton telescope on the Yarahla, to view a dark-matter nebula. (ENT: "Breaking the Ice")
This starship was only mentioned in dialogue.