Yachts are terran luxury starships. They are capable of travel through warp space. They had padded restraints combined with seats that would blow up into balloon-like cushions to help protect from the G-forces of escape velocity.
One known yacht is the Padraig, owned by the Calabas Family.
References[]
DeCandido, Keith R. A. (November 28, 2006). StarCraft: Ghost: Nova. Simon & Schuster (Pocket Star). ISBN 0-7434-7134-2