US Navy's base for the Pacific Fleet.
A harbor is a shipping area in a port, or metaphorically a safe place.
Pearl Harbor was the main port for the US Navy in the Pacific Ocean.
Pearl Harbor gave the US a port safe from almost any storm.
The attack of Pearl Harbour is the Japanese attacking a port in Hawaii. Pearl Harbour
Pearl Harbor
Japan's attack on Pearl Harbor was an attempt to disable the US Navy. Fortunately the aircraft carriers were not in port and the effort was unsuccessful.
Japan was the country that attacked the American bases and shipping at Pearl Harbour.
That was home port.
Home port and place of repair.
None. Pearl was not a shipbuilding port. It was a Fleet base where they were repaired and resupplied.
None, there were no aircraft carriers in port.
Pearl Harbor is in Hawaii.