Some of the older wrecks start getting covered up in sand after a while. They also fall apart and lose their profile. You can get information on some of the wrecks like GPS and Loran location, how old the wreck is, what it consists of and how long it's been down there. The state DNR might have that info as well as some fishing charts. I have this info for at least 100 wrecks/artificial reefs in DE Bay and the NJ coast as well as Delaware, Maryland, Florida and the Bahamas.

Scott Meier
White Oak Lodge