The Cousteau was a Federation captain's yacht that was in service with Starfleet in the late 24th century, attached to USS Enterprise-E. Cousteau was a large auxiliary craft which normally docked on the ventral side of the saucer section, opposite the bridge, and immediately below the saucer torpedo launcher. When connected to the Enterprise, only the bottom side of the yacht was exposed to space; the top of the craft was concealed by the Enterprise and the warp nacelles were folded against the hull. Upon launch, the Cousteau nacelles folded downward and the entire ship dropped away from the Enterprise.