The USS Barbey (FF-1088) was a test platform for the variable-pitch propeller during the mid-1970's.
The installation was not an optimum arrangement, and was catastrophic for Barbey in Southern California waters. During testing, the propeller "walked off" the shaft in over 60 fathoms depth.
The propeller was unrecoverable, and the Barbey was towed into San Diego after nearly a day adrift.
TMischke (aboard 1977-1980)