About Revisions Concrete Barges (a.k.a. Breakwater Barges) Guam Max Depth: 61-70ft/19-21m Average Viz: 61-70ft/19-21m Entry Type: Boat Bottom Composition: Coral Aquatic Life: Plenty To See Spring: 81-85°F/27-29°C Summer: Over 85°F/29°C Fall: 81-85°F/27-29°C Winter: 81-85°F/27-29°C 8/14/2014 5:44 PM SpacemanCraig

The Concrete Barges are the same kind of barges as the "American Tanker" but these were sunk to help build the Glass Breakwater protecting Apra Harbor. The dive sight is littered with debris from the construction of the breakwater along with thousands of old Coca-Cola Bottles everywhere. Neat dive site, highly recommend it at least once.