Hi Grey pearl.
I was just getting on the forum to ask along similar lines.
I am after any schematics that might exist out there for the purpose of getting a stability assessment for my boat.
Has anybody done this?
Contacted OA themselves, but they advised that all was lost in a fire back in the day, and suggested I try this forum.
I’ve noticed that the pacific NW seems to be home to all things OA mk1, so have tried a few Shipwright’s I.e. port Townsend and a few others.
With no luck.
There is a referral to an Ed Monk 5’ ext design, and I’ve also asked about this.
So, I Guess my best chance is the same as yours.
Someone who’s done this might join in?