The benefits of Google's gigantic books- and magazines scanning project are becoming clear. Accidentally I stumbled across this photo article from the What's New section of a 1982 Popular Science Magazine: The Norton 44 catketch with freestanding rotating masts.
Norton 44 catketch
Norton 44 catketch
Michel Capel, Freedom 44 #4 1981 'Alabama Queen', NED8188, cat ketch with wishbones, home port Enkhuizen, the Netherlands, 52*42.238'N 005*18.154'E.