The hours of operation vary with the season - departures are available about every half hour throughout the day beginning at 9:00am.
The only way to get to Alcatraz is by a ferry operated by Alcatraz Cruises, LLC. They are located on The Embarcadero near the intersection of Bay Street - just a bit south east of Fisherman's Wharf. There is no parking at Pier 33.
When in San Francisco public transportation is the best way to get around. From the south, the Muni F Line runs along Market Street (east) then turns north on The Embarcadero, and runs right past the ferry terminal (on your right). From the north west (Fisherman's Wharf area) the F Line runs east past Pier 39, then turns south - the ferry terminal will be very close (about 1/2 mile past Pier 39) on the left. For detailed information on mass transit in San Francisco please visit the San Francisco Municipal Railway web site.
Carhartt