August 5, 2009
Vis 100’ Depth 60-90’ dive time 55 minutes
The "American Tanker" is actually a large 300+ ft concrete barge. In late 1944 the barges were loaded in Honolulu with war supplies, and then towed to Guam from Honolulu by the USS Bannock and Arikara. Later they were put into position on the Calahan bank by the USS Gear and sunk to provide a breakwater at the mouth of Apra Harbor.