Wood was famous for roles in films such as "West Side Story" and "Rebel Without a Cause" and was nominated for three Academy Awards.
Conflicting versions of what happened on the yacht have contributed to the mystery of her death. Wood, Wagner and Walken had all been drinking heavily in the hours before the actress disappeared.
Wagner wrote in a 2008 memoir that he and Walken argued that night. He wrote that Walken went to bed and he stayed up for a while, but when he went to bed, he noticed that his wife and a dinghy that had been attached to the yacht were missing.
"Nobody knows," he wrote. "There are only two possibilities; either she was trying to get away from the argument, or she was trying to tie the dinghy. But the bottom line is that nobody knows exactly what happened."
Anthony McCartney can be reached at http://twitter.com/mccartneyAP