I hope you mistyped the HIN which should start with PTJ which is the MIC (Mfg Id Code) for Nautica International which is listed by the Coast Guard as inactive. Plenty of bankruptcy info online too. MIC Database Detail Search Results
I actually have been trying to track down the son of the owner (deceased) and see if he knows anything about plans.
HOWEVER - as long as the rib doesn't have a HIN starting with BTJ then I'm sure it's Nautica. It should be Hypalon and should be a very good little boat.