They retrofit Yorktown in 3 days instead of 3 months. The Japanese thought Yorktown was a different aircraft carrier-they could not imagine such a fast retrofit.
It was 2 days, and they thought it was a different ship because they thought the Yorktown was sunk in the previous battle, not because they didn't think it could be repaired that fast (although that's probably also true).
It was 2 days, and they thought it was a different ship because they thought the Yorktown was sunk in the previous battle, not because they didn't think it could be repaired that fast (although that's probably also true).