Dear Ms. Hedges,
Thank you for posting your request on History Hub!
To begin your search, we suggest that you request your father’s Official Military Personnel File (OMPF). OMPFs and medical records of enlisted men of the U.S. Navy who were separated from the service after 1885 and prior to 1955 are located at NARA's National Personnel Records Center (NPRC), (Military Personnel Records), 1 Archives Drive, St. Louis, MO 63138-1002. To request these records, please mail a completed GSA Standard Form 180 to NPRC.
We hope this is helpful. Best of luck with your family research!