WASHINGTON (AP) _ Retired Rear Adm. Oliver Francis Naquin, commander of a sunken submarine whose rescue captured national attention 50 years ago, died Monday from an obstruction of the pancreas. He was 85.

Naquin commanded the submarine Squalus, which sank during a trial dive off the New Hampshire coast in 1939. He and 32 sailors submarine were rescued by a diving bell that was lowered from the surface and attached to the hatch of the Squalus.

Another 26 men died when they were trapped in compartments that had flooded or been sealed off.

Naquin died at Malcolm Grow Medical Center at Andrews Air Force Base in suburban Maryland, The Washington Post reported.