Pearl Harbor's defenses reflected a peacetime funding mindset

What shore defenses did the United States have in Hawaii at the time of Pearl Harbor?

It had substantial defenses, but they were not organized or supported to the standard of a forward base genuinely expecting war.

Hawaii had coastal artillery and other defensive assets, so the problem was not the total absence of fortifications. The question is whether those systems were organized, supplied, and supported as they would be for a primary base expecting attack. Two battle-hardened Japanese divisions could have exploited the gap between nominal defenses and wartime readiness. Pearl Harbor therefore exemplifies a government treating conflict as a choice it could schedule rather than as an event in which an enemy also chooses the time. Base defense depended on funding, warning, and institutional expectations.