Try contacting the operating company of the "Fitz" - perhaps they can help.

Oglebay Norton Marine Services Company
1301 East Ninth Street - Suite 3737
Cleveland, Ohio  44114-1800
(216) 861-8700
Toll Free: (888) 889-3636
http://www.oglebaynorton.com/Marine/marnhist.htm

Good Luck with your search.