Three Dutch researchers conducted a study using hydraulic software and 'boats' to determine the three prisoners from Alcatraz could have survived and made it to land. It's possible they could have hit the beach north of the Golden Gate Bridge if they started their terrifying voyage from 11:00 p.m. to midnight - if they left earlier, it would be almost certain that the strong current would have swept them underneath the Golden Gate Bridge and to certain death.
The bodies of John and Clarence Anglin and Frank Morris were never discovered, but FBI agents and prison officials said there was little chance they could have survived in their homemade raft consisting of rain coats.
"We didn't know exactly when the inmates launched their boats, or their precise starting point, and so we decided to release 50 'boats' every 30 minutes between 20:00 and 04:00 (11:00 p.m. and 4:00 a.m.) from a range of possible escape spots at Alcatraz to see where they would end up," said Fedor Baart, Deltares hydraulic engineer, in a statement. "We added a paddling effect to the 'boats,' as we assumed the prisoners would paddle as they got closer to land."