How might a US Navy attack on Japan approach?

What might a US Navy approach to attack Japan look like?

Use the Doolittle Raid route as the closest practical comparison for the approach.

The route and map used for the Doolittle Raid offer the closest practical comparison for an American naval approach to Japan. The forces and mission would differ, so the analogy concerns access rather than the whole operation. The comparison supplies a route, not a duplicate plan.