Here is a better source for the story:
Divers begin Lake Michigan expedition to find fabled Griffin ship
FoxNews.com ^ | June 16, 2013 | Associated Press
http://www.foxnews.com/us/2013/06/16/divers-begin-lake-michigan-search-for-griffin-ship/
Thanks. I read it. Interesting.
old woodcut of Griffon
I'm trying to picture this as a 40 X 18 vessel ... just seems so small to be so elaborate