Hi,
I did a bit of googling about this when you first posted it.
I couldn't find anything even close to the builder in New Hampshire.
If you have the Hull No which is like a VIN Number you can take the first 3 letters and see if you can get a hit here:
http://www.uscgboating.org/recalls/mic_database.htm
Good Luck but I think you will find that this is a one off so it will depend what you want to pay for it to set the value.