Shipyard
A shipyard (also called a dockyard) is a place where ships are built and repaired. These can be yachts, military vessels, cruise liners or other cargo or passenger ships. Dockyards are sometimes more associated with maintenance and basing activities than shipyards, which are sometimes associated more with initial construction. The terms are routinely used interchangeably, in part because the evolution of dockyards and shipyards has often caused them to change or merge roles.
Port of San Diego
There are currently three shipyards on San Diego Bay, National Steel and Shipbuilding Company (NASSCO), Continental Maritime of San Diego (Huntington Ingalls), and Southwest Marine (BAE Systems). NASSCO is the largest new-construction shipyard on the west coast of the United States; "specializing in auxiliary and support ships for the U.S. Navy and oil tankers and dry cargo carriers for commercial markets."