Hunters Point Naval Shipyard. The original docks were built on solid rock in 1916, they were thought to be the largest in the world at over 1000 feet long. During the 20th century much of San Francisco Bay shoreline was extended by landfill, this included Hunters Point. Between World War I and WWII Hunters Point was used by the Navy and was the largest deep water port between San Diego and Washington. The key fissile components of the atomic bomb were loaded onto the USS Indianapolis, July of 1945 from here. Some of the piers are still used today, but in a very limited capacity for dry dock repair on occasional naval vessels and cruise ships. The base was closed in 1994. You can watch all the action when a boat is in dry dock from the restaurant The Ramp, located at 885 Terry Francois Street. There is outside seating and it is a great place to while away a sunny afternoon.
http://ramprestaurant.com/pages/home.htm