http://swissbaync5d7ykaz7dh7v4qjrb4gmen5aj3bogxrcgbb43ij34bjuyd.onion/pdf/Books/Survival/Medicine/oddsnends.htm
Metzler has located and dove dozens of wrecks himself, and
maintains an extensive file on Lake Erie wrecks,a s well as detailed information on all
21000 ships ever built on the Great Lakes (Huechner 1994). As is well known among fresh
water divers, cold temperatures and lack of wood worms favor preservation of Great Lakes
wrecks.