Croisiere Pour Couples Echangistes (1980)

aka's: La Croisière Rose Canal/
Variations Amoureuses

Guillaume (Alban Ceray) rents a house-boat with his wife Dominique (France Lomay) and their lover Martine. In the evening, Guillaume tells stories to put them to sleep. On their holiday cruise along a canal, they meet several characters and have “fun” with them each time – the woman lock keeper (Brigitte Verbecq), a girl on a bike (Cathy Stewart) who plunges into the canal as she waves at them, a girl (Elodie Delage) who hitches a lift from a bridge and a girl (Lucie Doll) who seems to be a nun, until her black stockings and suspenders are revealed. Eventually, Martine brings M. Léon (Jean-Pierre Armand) on board and the film ends with an orgy. (In French language). ADULT CONTENT.