We have ferries, but the problem is that they tend to go to places that are already serviced by BART, which is much more convenient (if less enjoyable), or dock

We have ferries, but the problem is that they tend to go to places that are already serviced by BART, which is much more convenient (if less enjoyable), or dock from places that arent near BART (Alameda). As I understand it, the Ferry from Sausalito to SF is regularly used, because BART doesn't visit the north. Why there is no South Bay to East or SF I'm not sure, maybe because up until recently there wasn't enough interregional traffic where BART/Caltrain was not already there.