It happens, here is an excerpt from an ATSB report into a Qantas jet that had prepared for a 'ditching' before deciding to carryout an autoland into Perth where no such facility existed:
The successful third attempt at landing at Perth was made when the Airbus was very low on fuel following the previous two attempts, and the only other course of action would have been to attempt a ditching at sea.
While Qantas international pilots are trained in autoland procedures at some overseas airports, they are not approved for anything other than emergency use at Australian airports because none have ground based navigational aids that are certified as reliably generating signals of sufficient accuracy for such ultra low visibility landings.
The flight had departed from Singapore without enough fuel to make a last minute diversion from Perth to the nearest suitable big jet airport which was Learmonth, 1110 kilometres to the north.