I've just launched my new boat, she is 21ft 6in excl outboard with an 8ft beam. The engine is an 1994 Evinrude E50RNLIC with a 11-3/4" x 17P prop, don't know what the 'P' stands for.
Took her for a spin in the bay, slowly to begin with and then opened her up after an hour getting to "know her"...