Zwalker I
In 1965 the K.N.W.V. issued a design competition for a real small motorsailer, as the fifty-fifty types at the time were more or less motorboats with auxiliary canvas.
The boat should be shallow drafted and was intended for inland and coastal waters. The winner was the design of a 8,10 m sturdy motorsailer named "Zwalker".
The design received immediately national and international attention . Her original appearance, combined with beautiful lines attracted many ardent "motorsail" lovers.
One of them was Mr. T. Kasemier from Medemblik who ordered the first Zwalker at the Jongert yard, situated not far from Mr. Kasemier's home. Mr. Jan Jongert was very enthousiastic about the Zwalker type and soon larger versions were developped, named Zwalker II, III and IV (9,30m-10,50m and 12,20m). They were mainly exported and today many Zwalkers can be found on the international waters.