Sunken aircraft carrier found off California coast

U.S.S. Independence used in atomic bomb tests, scuttled in secret

SAN FRANCISCO — Scientists have rediscovered a mostly intact World War II aircraft carrier used in atomic bomb tests and then sunk at a secret location off the Northern California coast decades ago.

The National Oceanic and Atmospheric Administration recorded video of the U.S.S. Independence as part of a mission to map some 300 historic shipwrecks in the waters outside San Francisco’s Golden Gate Bridge.

Images captured by a remote-controlled miniature submarine showed the Independence about 30 miles off the coast near the Farallon Islands. A plane is visible in a hangar.

The Independence operated in the Pacific during the war and served as a target ship for two Bikini Atoll atomic bomb tests in 1946. “This ship fought a long, hard war in the Pacific and, after the war, was subjected to two atomic blasts,” NOAA scientist James Delgado said.

Despite the damage, the Independence continued to float. The Navy used the ship to study nuclear decontamination while it was moored in San Francisco, then towed the Independence out to sea in 1951 and scuttled it. The site of the ship’s sinking was kept secret.

The contamination poses little danger to public health because of the ship’s isolation 2,600 feet underwater and 30 miles from the coast, scientists say. Neither the submarine nor tools used to examine the ship showed any signs of increased radiation, Delgado said.

Kai Vetter, a University of California, Berkeley, nuclear engineering professor, said the ship posed a serious risk to workers at the shipyard where the ship was moored after the atomic tests. “But the risk to the public now is extremely small,” Vetter said. “Water is a very efficient shield.”