About Revisions American Tanker, Apra Harbor Apra Harbor, Guam Max Depth: 81-90ft/25-27m Average Viz: 101-110ft/31-34m Entry Type: Boat Bottom Composition: Sand 6/18/2010 11:17 PM

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. Depth to the top is 40’/13 meters. Depth to the main deck is 60/20 meters and the ship has a list to the right (starboard side).