Pearl Harbor, known in Hawaiian tradition as Wai Momi, was a protected estuary tied to Native Hawaiian fishing, food production, travel, and chiefly authority. During the late nineteenth and early twentieth centuries, the United States obtained access and developed the harbor as a naval base. Dredging, docks, airfields, fuel storage, and repair facilities made Oʻahu the center of American Pacific defense. That military concentration also made Pearl Harbor the principal target in Japan’s plan to cripple the United States Pacific Fleet.

On the morning of December 7, 1941, Japanese carrier aircraft attacked in two waves. Torpedo planes, bombers, and fighters struck ships and airfields with little warning. Eight American battleships were damaged or sunk, along with cruisers, destroyers, and other vessels; aircraft losses were severe. A total of 2,390 American service members and civilians died. The attack turned a regional war into a global conflict for the United States, and Congress declared war on Japan the following day.

USS Arizona suffered the single greatest loss. An armor-piercing bomb penetrated the battleship and triggered a catastrophic explosion in its forward magazines. The ship sank at its berth within minutes, killing 1,177 crewmen. More than nine hundred remain within the wreck. Unlike several other damaged battleships that were raised and returned to service, Arizona was left in place. Its shattered hull, submerged decks, and continuing seepage of oil became powerful physical evidence of the attack.

Wartime salvage removed guns, equipment, and portions of the superstructure while divers recovered what they could under dangerous conditions. Commemoration began even before the war ended, but creation of a permanent memorial required years of advocacy and fundraising. The Pacific War Memorial Commission, federal support, military cooperation, and private donations ultimately enabled construction. Architect Alfred Preis designed a white structure spanning the wreck without touching it, with a central opening and a shrine room listing the dead.

The USS Arizona Memorial was dedicated in 1962. Its form creates a ceremonial passage from boat landing to assembly space and then to the marble wall of names. Openings frame the harbor and the remains below, joining architecture, water, and wreck as a single memorial environment. Survivors of the Arizona were later permitted to have their cremated remains placed within the ship, while other Pearl Harbor veterans could be commemorated nearby. Annual ceremonies reinforced the site’s role in national and international remembrance.

Federal interpretation expanded to include the broader attack, civilian experiences, Japanese planning, rescue, salvage, wartime consequences, and the USS Oklahoma and USS Utah memorials. Pearl Harbor National Memorial now preserves resources associated with December 7 while the harbor remains an active military installation. Managing the corroding Arizona requires scientific monitoring and careful stewardship of a war grave. Boat access and the memorial’s marine setting make the visit itself part of the commemorative experience. The memorial’s history extends beyond the instant of attack: it encompasses Hawaiian place, naval expansion, mass death, American entry into World War II, postwar reconciliation, and continuing debates over how catastrophe should be remembered.