Panic attack

I just discovered after a year that my boat does not have an I.D. Tag. I need to know where and how I can get one. The place where it was to be is there but the tag is not. I have all the paperwork on this boat and vin num on the hull but nothing telling weight, num of people allowed, Engine size allowed. the company that made this boat is out of buisness. can this come from a marina shop? or do I need to higher power?