California has more named islands than Washington, but they’re not all obvious since there’s quite a few small islands in the San Francisco Bay, Suisun Bay and the Sacramento River Delta. I tried fact checking which of the two had the most total islands between them but couldn’t find a satisfactory answer.
From a practical standpoint, sailing in the Bay Area is dead boring. There's not that much worth visiting. And once you go outside of the Bay, the next interesting stop is Japan. Puget Sound is way better.
It'd be nice to quantify this somehow. I guess one metric would be "navigable rocky islands"?