From Vanya Ysadora’s datapad …

Darth Feyd was here; so was Emperor’s Hand Ellaine Vorhejeron. This ship orbits Procopia, serving as the major federal penitentiary for this side of the Free Worlds. It does not have any cells specially appointed for High Vor prisoners, and I’m still not sure how they normally would manage FS inmates.

The Nocturne was first encountered in the adventure “Dark Dreams”