The USS Pampanito is sitting in Fisherman's Wharf and you can get on and walk around.
The ship was built in 1943 and is a Balao class submarine (the successor to the famous Gato class). She completed 6 war patrols. She was also the submarine used in "Down Periscope"
The ship behind her is the Jeremiah O'Brien, a Libery Ship from World War II.
A better shot of the sub.
Looking up at the periscopes.
One of the aft torpedo tubes.