RELATED: Explorer Vasco da Gama's Shipwreck Found
In addition to the three bronze cannons and the marble monument, the divers found 19 iron cannons, 12 anchors, a stone grinding wheel, and scattered ballast and ammunition from the ships, Pritchett said. The markings on one of the bronze cannons indicate that it was cast in the 1540s, during the reign of King Henry II of France, he added.
Pritchett explained that his company had permits from the state of Florida to explore seven areas off the coast of Cape Canaveral, where the wrecks were found - an area littered with debris from rocket test launches at the U.S. Air Force base at Cape Canaveral, southeast of NASA's Kennedy Space Center.
"We've found hundreds and hundreds and hundreds of U.S. Air Force rockets that they were testing from 1948 forwards, and also shrimp boats, airplane engines, airplanes, " Pritchett said.
"We have found some of the actual rocket engines, and lots of rocket tubes - some of these things are 30, 40 feet long," he said. "Some are sticking halfway out on the surface, or sticking straight up out of the sand - there are literally thousands of them out there. We GPS and photograph everything we find, and we turn that stuff over to the U.S. Air Force, because one day, it will be valuable to someone for a historical reason."