And so in 1979 the Funship, as she was known, was permanently beached on the banks of the Dee Esturay and equipped with a mall, cinema, game arcade, restaurant, nightclub and hotel rooms.
But the fun times would be short lived. The council withdrew support for the ship due to safety concerns, and it closed in 1985.
"After many long-running disputes with the council, John Rowley (one of the owners) decided to just lock the doors and walk away," Williams said.
"Inside, it's like a time capsule. Other than some minor vandalism, it's immaculate."
The untouched interior adds a ghostly quality to the historic ship, which cuts an impressive figure on the deserted quay.
"It's a very eerie place," Williams said. "But that's part of the reason why it captures people's imaginations."