Fähre F12, Wassersportallee

Nice start for a hike. And 20 minutes on Sunday is also ok, especially since you can already on board before.

The BVG ferry commutes all year round between Grünau and the Köpenick district of Wendenschloß. Weekdays between 06:00 a.m. and 08:00 p.m. every 20 minutes. At peak times in the morning and in the evening even every 10 minutes.
At the weekend, the ferry times start a little later. Saturdays 7:30 a.m. in summer and 8:30 a.m. in winter. Sundays all year round at 8:30 a.m.
( see here: bvg.de/images/content/linienverlaeufe/linienverlaeufe/linienlaufF%C3%A4hreF12.pdf )

It should also be noted that the ferry does not operate in heavy fog or when there is a thick ice cover. The ferry belongs to the BVG and can be used with a VBB ticket. A short-haul ticket is sufficient for the one-time crossing.

Almost silent deceleration when driving over the Dahme.

Nice, short crossing. BVG ticket is sufficient.

Faster way in the direction of Müggelsee if you are traveling by bike or on foot. Runs at least every 20 minutes, every 10 minutes during rush hour