Originally Posted by FF
Mainship is probably still in business , call them to find what was standard.
Mainship is long gone.
I have an excel file from 2006 from the Yahoo owner's group that listed info from those who submitted it.
There are several 36 DCs listed but unfortunately none of the diesel boat owners submitted their prop specs. Most of those models had Crusader 270s and different gear ratios.
There is one 40 DC owner with 200 Perkins and 2:1 ratio that listed his props at 24x21.
Based on that I would say that the 22 x 22 would get you in the ballpark.