They can definitely touch down on one. They just can't also come to a stop on the same one, or even get to the other end with both wings attached. Though if yo

They can definitely touch down on one. They just can't also come to a stop on the same one, or even get to the other end with both wings attached. Though if you fitted a tail hook to a 747, probably some of that 747 could be said to have landed there. Maybe a few passengers too, and you could claim the fastest disembarkation speeds into the bargain. Turnaround times might suffer depending on the depth of the water.