How many Swordfish would it take to sink a modern carrier?

How many Fairey Swordfish would be needed to sink a modern supercarrier?

If the task group's defenses are working, very many would be needed simply to exhaust the defensive layers before any Swordfish could reach torpedo-release range.

The answer treats the carrier as part of a task group. Swordfish would first have to survive fighters, missiles, guns, and escorts before delivering torpedoes. The number required therefore depends more on exhausting a layered defensive system than on a simple attacker-to-hull ratio. This is a qualitative operational judgment rather than a calculated salvo model.