De Groene Draeck (English: The Green Dragon) is a royal yacht of Beatrix of the Netherlands. It was named after the flagship of Piet Hein, a famous 17th century Dutch admiral. De Groene Draeck is a traditional Dutch round bottomed sailing ship, built in 1957 in Amsterdam. She was offered by the Dutch people to the then Princess Beatrix for her 18th birthday. Her sail number is therefore VA 18.