The Batavia is a small theater in the lower deck of an old ship.
They have a regular schedule of concerts, jazz, folk, and related styles. They also have other small, presentations (plays, political cabaret, literature....)
In the afternoon they also somtimes have theater plays for children.
When you enjoy a nice theater presentation, have a look at the schedule of the Theater Wedel. The actors are mainly very talented amateurs. The director and the actors work with a lot of dedication.
Quite often, there are only a few empty seats left, and you better should make reservations before you go.