u/Familiar-Trash

I recently found this beaded bracelet and wanted to see if anybody could help explain its purpose/significance to me. Is it rosary-related or a devotional piece to the Blessed Mother? Also wanted an opinion on if this would be sacrilegious to wear (I am an actively practicing Catholic). There are 14 beads and the back of the cross reads “N D” with an anchor with a crown. Thanks!