A Vulcan ship was a type of starship utilized by the Vulcans during the 24th century.

Professor Richard Galen intended to take a Vulcan ship to Deep Space 4, following his departure from the USS Enterprise-D in 2369, but while his shuttle was en route, it was attacked by an Yridian destroyer, and Galen was killed before he could make his rendezvous. (TNG: "The Chase")

The same year, a Vulcan ship exploring the Gamma Quadrant made contact with the Wadi. Three weeks later a Wadi delegation visited Deep Space 9 to make official first contact with the Federation. (DS9: "Move Along Home")

Judging from this extremely generic designation, this vessel could be any type of previously mentioned or unmentioned Vulcan starship classes.