And she's not the first.
Interestingly, the WWII Queen Elizabeth spent a couple of years sitting on the bottom of Alexandria Harbor. She and her sister ship, the Valiant, were both sunk at dockside by Italian frogmen.
But, since the harbor bottom was only a couple of feet below her keel, her condition wasn't readily apparent. The British set about repairing the two ships where they lay...and the Italians never realized the attack had been successful.
That is an interesting tidbit