Extracto de los Anales de Arda:

The black ship of Nienna. Mournië lies at Hanstovánen at Haerast, When Men dies they goes to the Halls of Mandos where Nienna gathers them in her hall Fui, from there they are send aboard Mournië after their final judgement and they sail now south to the destination of which only Eru Iluvathar knows. "Then when she is laden, of her own accord she spreads her sable sail and before a slow wind coasts down those shores. Then do all aboard as they come south cast looks of utter longing and regret to that low place amid the hills where Valinor may just be glimpsed upon the far of plain."