I see it has a state license - you may be able to trace the type through that, if you can't find an HIN on the transom.
If you don't find any major flaws that's quite a 'deal'...
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)