[1] (Those appointed as Flag Officers Commanding or Commanding-in-Chief of a particular area or Fleet often functioned as the local port admiral in this sense.)
The distinction is seen in informal correspondence such as the following, dated 1837: "The Devonport regatta ... was attended by the Port-Admiral, the Admiral-Superintendent of the Dockyard ... and other persons of consideration.
[3] In 1971, the remaining Admirals-Superintendent of HM Dockyards were redesignated as Port Admirals; unlike the above use of the term, this was an official designation.
Port admiral is an honorary rank in the United States Navy for the senior officer of the ships in a naval dockyard.
In the Lensman novels, the rank of port admiral appeared as the most senior naval officer of the Galactic Patrol, with de facto supreme command over its forces.