Die Seaview - In geheimer Mission
Voyage to the Bottom of the Sea (original)
Starring Richard Basehart, David Hedison, Terry Becker, Del Monroe, Paul Trinka, Richard Bull, Robert Dowdell
It's a drama and action & adventure show, and has a rating of 7.2 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from Austria.