This 11.00-metre motor sailing yacht was designed by H.W. de Voogt and a sister ship of Trio. The steel plates of Flevo’s hull were welded; the keel plates had a thickness of 6mm; the decks were made of 30mm teak and the superstructure of 30mm mahogany. The mainsail measured 24.6m² and the stay jib 12.3 m². The mast, boom and jib boom were made of Oregon pine. The auxiliary engine was a Universal ‘Unimite 4’ petrol engine of 38 hp.