Once a year, CGN holds a big naval parade on the lake. On this day, a fleet of Belle Epoque Paddle Boats gather together at a lakeside town for a grand "parade". See video (aerial view) of a previous event below. This year it's the turn of Rolle to host the parade (the town itself is celebrating its 700th anniversary with lots of activities planned between April and October 2019).
Member of the public can take part in this spectacle by boarding a boat at Geneva, Nyon, Rolle, St-Prex, Morges, St-Sulpice, Lausanne, Vevey, Montreux or Le Bouveret or simply watching the event from the quayside in Rolle. The main choreographed event will be visible at 14:45. More details, tickets etc can be found on the CGN website.