HARRY Potter author J.K. Rowling has bought Hollywood star Johnny Depp?s luxury yacht for ?22million.

The British novelist, 50, was spellbound by the actor?s 156ft vessel ? which boasts three large decks ? after taking it out on a family charter trip.

Pirates of the Caribbean star Depp, 52, spent around ?5million renovating the boat ? which can house ten guests in five cabins as well as nine crew ? in 2008.

t was named Vajoliroja after Depp?s former partner Vanessa Paradis and their children Lily-Rose and Jack. Depp then renamed it Amphitrite after the Greek sea goddess as a gift to wife Amber Heard, 29.

J.K. ? said to be worth ?580million ? fell in love with the boat after a holiday with her husband Neil Murray and their two children David, 12, and Mackenzie, ten.

She will use it for holidays with her family, including daughter Jessica, 22, from her first marriage, and it can also be chartered for ?72,000 a week.

Depp kitted the yacht?s decks out with a state-of-the-art sound system, games consoles and belongings including a pirate?s head sculpture. He then sold it to a US shopping magnate.

It also comes with kayaks, windsurfing board and dinghy. The firm chartering it says the boat hails from the ?Golden Age of yachting with all the latest amenities?.

A spokesman for the author declined to comment.