26-meter Van der Valk "Nicostasia" Delivered To Owner The latest luxury yacht by Dutch builders Van der Valk has been delivered to her owner. Christened “Nicostasia”, the 26-meter aluminum build is now sailing the oceans with its owner. The stylish and very practical yacht is the work of Guido de Groot, designed inside and out. She is a raised pilot house design and represents the fourth hull in Van der Valk’s RPH semi-custom series. The overall design brief for Nicostasia was to create a cool-looking, smart-working family boat, thoroughly adapted to the clients’ wishes.