If you are trying to determine sailing performance you might get an idea looking at PHRF ratings. The Irwin Citation 31 is around 170, which compares very close to a Catalina 310. Slightly slower than a C&C30MkII but faster (surprise
) than an Island Packet 31. With a deeper keel than the Catalina and a higher SA/D I would expect the Irwin to sail faster upwind, or perhaps point a bit better.
It looks like there may have been a shoal draft version, or perhaps a centerboard version so the numbers could be off for those but in general the numbers show this to be a cruiser but leaning a bit towards the performance side more than some.
I wouldn't worry about the performance so much, more about the build quality and required repairs. There are a LOT of boats in the $15k to $20k range out there. Unless you really want to work on a boat for the next couple of years, keep looking. If you don't find one in your neighborhood then wait a while or look further out and spend the money on transporting rather than renovating.
It looks like there may have been a shoal draft version, or perhaps a centerboard version so the numbers could be off for those but in general the numbers show this to be a cruiser but leaning a bit towards the performance side more than some.
I wouldn't worry about the performance so much, more about the build quality and required repairs. There are a LOT of boats in the $15k to $20k range out there. Unless you really want to work on a boat for the next couple of years, keep looking. If you don't find one in your neighborhood then wait a while or look further out and spend the money on transporting rather than renovating.