MSC Cruises used elements of the show including the theme tune in a contest judged by Ms Ballas - who even used the famous paddle to reveal the scores.
Ms Ballas, 65, was hired for the seven-day voyage from Southampton to Norway on board the Virtuosa, which was advertised as 'bringing Strictly glamour' to the 19-deck luxury liner.
The Strictly judge, 65, lives with her mum, 88, and juggles her TV commitments with caring for Audrey, whose condition she revealed was sadly 'getting worse'.
The Strictly Come Dancing judge, 65, first met Danny in 2018 with the pair going on to date for six years, but during their relationship she said she was left 'constantly worrying.'
The TV judge, who appears alongside Craig Revel Horwood , Motsi Mabuse and Anton Du Beke, is said to be heading across the pond to feature in a spin-off of Dancing With The Stars .