They will discover a new problem on sea trials.
I own a house that is almost 100 years old. You have to be prepared for ongoing issues and overhauls. My husband calls it the money pit. But we have been here 35 years
But you must sink time and money into it. They are out of time and I suspect, out of money. Also, if something goes wrong with the house, I am not in the middle of the ocean and the house doesn't sink.