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Sea Craft 1972 20SF Trailer Question

Good Morning All,

I am getting a new trailer made from Rocket Trailer for my 1972 Sea Craft 20SF (Formerly Parker Yacht's Boat) and they are asking for the deadrise angles. Given that it is variable, i wonder if any of you could provide some insight on the angles involved.

Thanks,

Andrew

Quote:

Originally Posted by ayianilos (Post 234365)

good morning all,

i am getting a new trailer made from rocket trailer for my 1972 sea craft 20sf (formerly parker yacht's boat) and they are asking for the deadrise angles. Given that it is variable, i wonder if any of you could provide some insight on the angles involved.

Thanks,

andrew

Attachment 9477

Attachment 9478

Quote:

Originally Posted by Lordwrench (Post 234397)

Are these drawings the same for the Superfish? I notice they are labled for the Master angler.If not, do you have the SF 20' and or 23' digrams Mike?

B

The 1970-1980 20' hulls should be all the same bottom hull shell. The top cap / liner is just what is different on the Ma, sf, seafari and sceptre. The pre 1969 19' hulls are close to this too but slightly different mainly on the front chine area. If I remember correctly this drawings were done by a member and posted up here some time ago. They might not be 100% correct but fairly close. The only number that I see that may be different is the 14 degrees angle of the transom lay back. I have checked several hulls back to back with an angle finder and I usually come up with 12.5-13 degrees. it varied slightly from hull to hull due to the rotted wood making the rear sag outwards. 14 degrees would be correct on one rotted out probably. I don't have any thing on the 23 hull, but do have some stuff on the 25' and the moesly 21' comparing the two. They are real similar other than the extra 4' feet on the 25'.

I made the drawings from my 1975 master angler. The transom is rotted and it was measured before I remedied that. So mine might have been 12-13 on port and starboard and 14 degrees in the center. I did a luan tracing of the running surface. Detail up by the cap is less accurate but the steps in the hull should be good.

I got bunks fed and aft no rollers