Cathedral Ship
From Warhammer 40k - Lexicanum
Cathedral Ships are immense holy vessels created by the Ecclesiarchy, to serve as the soul of a pilgrimage fleet.[1]
They have no class, mark or design as each is a unique baroque creation, fashioned by the faithful of the Imperial Cult. Some, like the Veritas Diras, are carved from asteroids that have had engines attached to them.[1]