Aircraft Carrier---What to do if flightdeck has crater?

I suppose if the flight deck is hit and there is a crater on the deck flight operations are cancelled. I'm sure helicopters can still take off and land. Let's ume a mild to moderate crater. How fast can this be fixed so jet flights can resume? Are there people on the carrier specially trained to fix something like this or does the carrier have to get to a friendly port. Carrier has others weapons like many guns and missles right so is not totally disabled but I suspect a crater on the deck is quite impairing. The hope is that a projectile could be stopped or prevented before hitting the flight deck of course. Thank you!