It was 1960, Dad brought one of these home in blue,,,what a boat in todays market...old 318 engine,,never failed and most likely had old 30wgt oil in it....push button shift selector and almost square steering wheel,,,,absolutely no power, but ran ok. I was 14.
https://www.google.com/search?q=1960+ply...280&bih=739
https://www.google.com/search?q=1960+ply...280&bih=739