text: According to the Blue&Gold Fleet schedule the last two runs to Tiburon on weekdays, the last run to Tiburon on weekends, and two of the evening runs to SF go via Sausalito. It's not clear from the schedule if you can actually travel between Sausalito and Tiburon though, or have to stay on the boat.  
  
  ( https://www.blueandgoldfleet.com/ferry/tiburon/ )