I looked up in a book I have an OK dinghy, the pic of the OK dinghy looks more like a laser, and it is 14' long. maybe there are two "OK Dinghys"
It might take some more digging before I say you have an OK dinghy base on what I see downstairs in tat 1600 page book on ALL kinds of boats published about 74-76 or so IIRC.
maybe a google of OK dingy will net a better pic or specs?
She drives me boat,
I drives me dinghy!