San Francisco Bay Is Filled with Boats, but What Do They Do?
kqed.org
kqed.org
Also fun fact: San Jose used to have a port for exporting animal hide up in Alviso
In the meantime there are still plans for other South Bay terminals, such as Redwood City. The ferry system is one of the most exciting things going on in local transit developmemt.
There are 20 foot containers, they're just not nearly as common as the 40s.
https://en.wikipedia.org/wiki/List_of_boat_types is a fun article to browse