O K
NOW NAME THE TRAILER ITS ON

WHEW it needs a little fixing up -

The P Cat was a 19 ft boat ,--this is 17
though has some similar features such as radiused solid crossbeam
The P-cats were also spin rigged .

Bob,s guess of a Phonex is close,-
I repaired one and gave it to a beginning sailor
it had alum crossbeams though similar hull shapes.

This could be an earlier prototype of the Phenix later changed and simplified ,--not sure

here is a fun website
http://www.goodoldboat.com/assoc_list.html#P