In the late sixties, Johan de Vries prepared a large number of designs for motor and sail yachts. Several were built on spec and sold on boat shows, including the 16.85m Katja in 1966, the 24.51m Ale Ⅱ and the 17.25m Mi-Do Ⅱ in 1968.
In the late sixties, Johan de Vries prepared a large number of designs for motor and sail yachts. Several were built on spec and sold on boat shows, including the 16.85m Katja in 1966, the 24.51m Ale Ⅱ and the 17.25m Mi-Do Ⅱ in 1968.